CN101513679B - Throw-away insert - Google Patents

Throw-away insert Download PDF

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Publication number
CN101513679B
CN101513679B CN2009101299081A CN200910129908A CN101513679B CN 101513679 B CN101513679 B CN 101513679B CN 2009101299081 A CN2009101299081 A CN 2009101299081A CN 200910129908 A CN200910129908 A CN 200910129908A CN 101513679 B CN101513679 B CN 101513679B
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China
Prior art keywords
cutting edge
insert
main cutting
projection
smear metal
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CN101513679A (en
Inventor
石田琢也
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Kyocera Corp
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Kyocera Corp
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Priority claimed from JP2005216862A external-priority patent/JP4364173B2/en
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Abstract

An object of the invention is to provide a throw-away insert superior in chip discharge performance, the holder thereof can be used for a long period. the throw-away insert 1 is formed in a substantially polygonal plate shape, and has a rake surface 2 on an upper surface and a flank 3 on a side surface, and forms a main cutting edge 4 in a crossing ridge part between the rake surface 2 and the flank 3, and constitutes the main cutting edge 4 of a plurality of divided main cutting edges 4a divided by at least one groove part 5 formed on the flank 3. A projection 6 is formed on the rake surface 2 so as to correspond to the respective divided main cutting edges 4a.

Description

Throw-away insert
The application divides an application, and the application number of its female case is 2005800330405; The applying date is on September 25th, 2005; Denomination of invention is " throw-away insert and the rotary cut instrument that this throw-away insert is housed ".
Technical field
The present invention relates to be used for the throw-away insert (throw away insert) of the rotary cut instrument of positive face milling cutters or slotting cutter etc.
Background technology
Figure 28 is the stereogram of the throw-away insert 101 (being designated hereinafter simply as insert (insert) 101) of expression prior art, and Figure 29 is the side view of the insert 101 of expression prior art.Insert 101 constitutes and can be installed on the support roughly cylindraceous.The support that insert 101 is housed is cut the rotary cut instrument that material carries out rotary cut with opposing.The rotary cut instrument of insert 101 for example is housed, and is positive face milling cutters recruitment tool or slotting cutter with instrument etc., especially as cutting edge length long, the rotary cut instrument that a plurality of cutting edges use is housed.
As prior art; Shown in figure 28, be well known that the rake 104 that links to each other with main cutting edge 103 has positive top rake and will contain the flank 105 separated inserts 101 (for example: open flat 7-299636 communique) of main cutting edge 103 by slot part 106 with reference to the spy of Japan.Such insert 101 is mainly used in the heavy cut of in the cutting at one time action, discharging a large amount of smear metals and uses the rotary cut instrument.Under the situation of heavy cut action, because the depth of cut and the amount of feeding are all bigger, be under harsh machining condition, to carry out process operation, become big so cut the cutting resistance that material puts on the rotary cut instrument.Because the main cutting edge 103 of insert 101 is divided into a plurality of separation main cutting edge 103a by slot part 106, makes the smear metal that when stock removal action, produces cut apart very for a short time.Therefore, cutting resistance reduces, the tack of being cut material is also improved, thus the effect of the dither in can also being suppressed to process.
Figure 30, Figure 28 are the stereograms of rotary cut instrument 112 that expression has the insert 101 of prior art.In addition, Figure 31 represent rotary cut instrument 112 the insert installation portion section and be the summary ideograph of generation state of expression smear metal 116.When heavy cut, from the thickness of the smear metal 116 of being cut material production, in other words its sectional area is big, rigidity is high-leveled and difficult with distortion.Therefore the smear metal 116 that is produced by the main cutting edge 103 of rotary cut instrument 112 is flowed towards the central side of support 111 on rake 104, with support wall 114 collisions of smear metal bag 113.Subsequently, smear metal 116 is discharged to the outside of smear metal bag 113 by 114 guiding of support wall.In this case, the problem of existence is that smear metal 116 is impacted in support wall 114, support wall 114 and smear metal 116 mutual friction mutually.In this case; The problem that exists is if carried out cut repeatedly to cutting material; Carried out rotary cut to cutting material, then the support wall 114 of smear metal bag 113 is worn gradually, finally becomes the empty state of being washed in a pan; Washed in a pan smear metal 116 generation accumulations on the empty wall at this, cause the chip removal discharging performance to descend.
At this moment, this becomes the damaged reason of insert 101, exists the rigidity of support 111 to reduce the problem that machining accuracy worsens.Particularly if cause smear metal 116 thickenings of generation by heavy cut processing, then wearing and tearing are more remarkable, must change the support 111 that has damaged in advance.
Summary of the invention
The objective of the invention is to solve the problem that exists in such prior art, provide a kind of and can improve the chip removal performance, can prevent the rotary cut instrument that smear metal is blocked the throw-away insert of smear metal bag and this throw-away insert is housed.
The present invention is a kind of throw-away insert; It is roughly tabular, on thickness direction one side's face, has rake, has flank in the side; And the intersection crest line portion at said rake and said flank forms main cutting edge; And said main cutting edge is made up of a plurality of separation main cutting edges that separate, and this throw-away insert is characterised in that: with the said corresponding position of main cutting edge of respectively separating, be formed with from the outstanding projection of said rake.
In addition, the invention is characterized in: the main cutting edge side sections in the said projection along with approaching each corresponding separation main cutting edge, forms the shape that reduces highly gradually.
In addition, the invention is characterized in: the main cutting edge side sections in the said projection along with approaching each corresponding separation main cutting edge, forms the shape that width reduces gradually.
In addition, the invention is characterized in: the main cutting edge side sections in the said projection along with approaching each corresponding separation main cutting edge, forms width and shape that the front end that reduces highly gradually attenuates.
In addition; The invention is characterized in: the main cutting edge side sections in the said projection; Have along with towards the top and two projection sides that the distance mutually reduces gradually; The intersection crest line portion that is formed by said two projection sides, along with near said separation main cutting edge, the distance between itself and the said rake reduces gradually.
In addition, the invention is characterized in: at least one projection in said each projection, roughly extending configuration on the direction of quadrature with respect to separating main cutting edge.
In addition, the invention is characterized in: at least one projection in said each projection, towards the mid portion configuration that separates main cutting edge.
In addition, the invention is characterized in: said projection is configured on the approximate vertical bisecting line of said separation main cutting edge.
In addition, the invention is characterized in: in the substantial middle of said rake, have the through hole that on thickness direction, connects, and the protrusion that around through hole, has ring-type.
In addition, the invention is characterized in: said projection forms respectively with the said main cutting edge that respectively separates in pairs.
In addition; The invention is characterized in: in a bight of said rake; Formation and the turning fillet cutting edge that main cutting edge links to each other that separates near the bight near this bight; Near separating each paired projection of main cutting edge beyond the main cutting edge separating of turning fillet cutting edge, roughly extending configuration on the direction of quadrature with the said main cutting edge that separates with said respectively.
In addition; The invention is characterized in: in a bight of said rake; Formation and the turning fillet cutting edge that main cutting edge links to each other that separates near the bight near this bight; Become with the said paired protrusion-shaped of main cutting edge of separating, towards said turning fillet cutting edge and its width and reducing highly gradually near turning fillet cutting edge.
In addition, the invention is characterized in: with said near turning fillet cutting edge separate the paired projection of main cutting edge, along with said near the bight to separate the angle that main cutting edge is be the imaginary line configuration more than 60 °, below 85 °.
In addition, the invention is characterized in:, form more than one said projection respectively with said respectively to separate main cutting edge corresponding.
In addition; The invention is characterized in: in a bight of said rake; Formation and the turning fillet cutting edge that main cutting edge links to each other that separates near the bight near this bight;, roughly extending respectively on the direction of quadrature and disposing near separating each corresponding projection of main cutting edge beyond the main cutting edge separating of turning fillet cutting edge with said with the said main cutting edge that separates.
In addition; The invention is characterized in: in a bight of said rake; Formation and the turning fillet cutting edge that main cutting edge links to each other that separates near the bight near this bight, corresponding to said near turning fillet cutting edge the separation main cutting edge and be provided with projection, in this corresponding projection; The protrusion-shaped that approaches most the configuration of said turning fillet cutting edge becomes, towards said turning fillet cutting edge and width and reducing highly gradually.
In addition, the invention is characterized in: approach the projection of said turning fillet cutting edge configuration most, along being that imaginary line more than 60 °, below 85 ° extends configuration with said the angle that main cutting edge is of separating near the bight.
In addition; The invention is characterized in: in a bight of said rake; Formation and the turning fillet cutting edge that main cutting edge links to each other that separates near the bight near this bight, corresponding to said near turning fillet cutting edge the separation main cutting edge and be provided with a plurality of projections, in these a plurality of projections; Approach most the projection beyond the projection of said turning fillet cutting edge configuration, roughly extending configuration on the direction of quadrature with the said main cutting edge that separates.
In addition, throw-away insert of the present invention has:
The rake that on thickness direction one side's who roughly is tabular body face, forms;
The bottom surface that on thickness direction the opposing party's of said body face, forms;
The flank that on said body side, forms;
The main cutting edge that forms in the intersection crest line portion of said rake and said flank; With
Be formed on the said flank, two ends arrive the major trough portion of said rake and said bottom surface, wherein,
Said main cutting edge and said flank; A plurality of first separation main cutting edges and separation flank by partly being severed by each said major trough constitute, and and then, said first separates main cutting edge is made up of a plurality of second separation main cutting edges of being severed by secondary slot part; Said secondary slot part; The one of which end arrives said rake, and is arranged side by side with said major trough portion, is configured on the said separation flank.
In addition, the invention is characterized in: the width of said secondary slot part is littler than the width of said major trough portion.
In addition, the invention is characterized in: the length of said secondary slot part is shorter than the thickness of said body.
In addition, the invention is characterized in: the degree of depth of the said major trough of the depth ratio of said secondary slot part portion is little.
In addition, the invention is characterized in: said secondary slot part is configured to the roughly said first separation main cutting edge of five equilibrium.
In addition, the invention is characterized in: on said rake,, dispose at least more than one projection separating the corresponding position of main cutting edge with said second.
In addition, the invention is characterized in: in the central authorities of said rake, possess the through hole that on thickness direction, connects, and around through hole, possess the protrusion of ring-type.
In addition, the invention is characterized in: in a bight of said rake, form and the turning fillet cutting edge that main cutting edge links to each other that separates, and form the bottom surface that is connected to support at the opposition side of rake near the bight near this bight,
The said main cutting edge that respectively separates along with approaching turning fillet cutting edge, tilts to the direction away from said bottom surface.
In addition, rotary cut instrument of the present invention is characterized in that: have described throw-away insert; With the support that a plurality of said throw-away inserts are installed.
The object of the invention, characteristics and advantage, it is more particularly bright to utilize following detailed explanation and accompanying drawing to carry out.
Description of drawings
Fig. 1 is the overall perspective view of the throw-away insert 1 of expression first embodiment of the present invention;
Fig. 2 is the vertical view of expression insert 1;
Fig. 3 is the side view of the long side of expression insert 1;
Fig. 4 is the side view of the short brink of expression insert 1;
Fig. 5 has been to use the overall perspective view of the rotary cut instrument 12 of insert 1,21 of the present invention;
Fig. 6 is the amplification stereogram of the insert installment state of expression rotary cut instrument 12 of the present invention;
Fig. 7 is the S-S profile of the rotary cut instrument of Fig. 6;
Fig. 8 is the overall perspective view of the insert 21 of expression second embodiment of the present invention;
Fig. 9 is the vertical view of expression insert 21;
Figure 10 is the overall perspective view of the insert 31 of expression the 3rd embodiment of the present invention;
Figure 11 is a side view of simply representing the long side of insert 31;
Figure 12 is the side view of long side of insert 31a of variation of the insert 31 of simple expression the 3rd embodiment of the present invention;
Figure 13 is the side view of long side of insert 31b of other variation of the insert 31 of simple expression the 3rd embodiment of the present invention;
Figure 14 is the overall perspective view of the insert 41 of expression the 4th embodiment of the present invention;
Figure 15 is the side view of the long side of insert 41;
Figure 16 is the overall perspective view of the insert 51 of expression the 5th embodiment of the present invention;
Figure 17 is the vertical view of expression insert 51;
Figure 18 is the side view of the long side of expression insert 51;
Figure 19 is the side view of the short brink of expression insert 51;
Figure 20 A～20D is the insert 51 of simple expression the 5th embodiment and the insert 151A of comparative example, the vertical view of the cutting edge shape of 151B, 151C.
Figure 21 is the vertical view of the insert 61 of expression the 6th embodiment of the present invention;
Figure 22 is the side view of the long side of expression insert 61;
Figure 23 is the side view of the short brink of expression insert 61;
Figure 24 is the stereogram that the rotary cut instrument 12 of insert 51,61 of the present invention has been installed in expression;
Figure 25 is the overall perspective view of the insert 71 of expression the 7th embodiment of the present invention;
Figure 26 is the amplification stereogram of the insert installment state of expression rotary cut instrument 12 of the present invention;
Figure 27 is the overall perspective view of insert 71a of the variation of expression the 7th embodiment of the present invention;
Figure 28 is the stereogram of the insert 101 of expression prior art;
Figure 29 is the side view of long side of the insert 101 of expression prior art;
Figure 30 is the stereogram of rotary cut instrument 112 that expression has the insert 101 of prior art shown in Figure 28;
Figure 31 representes the cross section of the insert installation portion of rotary cut instrument 112, and also is the summary ideograph of the generation state of expression smear metal 16.
The specific embodiment
Specify most preferred embodiment of the present invention below with reference to accompanying drawing.
(first embodiment)
Fig. 1 is the overall perspective view of the throw-away insert 1 (being designated hereinafter simply as insert 1) of expression first embodiment of the present invention.Fig. 2 is the vertical view of expression insert 1, and Fig. 3 is the side view of the long side of expression insert 1, and Fig. 4 is the side view of the short brink of expression insert 1.
The insert 1 of present embodiment is that roughly polygonal is tabular, and it is tabular to be the almost parallel quadrangle specifically, and the surface has rake 2 above that, has flank 3 in its side.Intersection crest line portion at said rake 2 and said flank 3 forms main cutting edge 4, and main cutting edge 4 is made up of a plurality of separation main cutting edge 4a that the more than one slot part that on said flank 3, is formed broke off in 5 minutes.In addition,, be formed with turning fillet (corner R) cutting edge 7, the linking to each other of itself and main cutting edge 4 near the main cutting edge 4a that separates of turning fillet cutting edge 7 sides in the intersection crest line portion of side and rake 2 in the bight of an acute angle of insert 1.In addition, with the rake 2 that respectively separates main cutting edge 4a adjacency on, be formed with respectively and the said corresponding projection 6 of main cutting edge 4a of respectively separating.In this embodiment, on rake 2, be formed with projection 6 respectively, with respectively to separate main cutting edge 4a paired.
Be formed with the through hole cylindraceous 16 that on thickness direction A, connects on the insert 1.Through hole 16 is for insert 1 is fixed in the hole on the support.Through hole 16 is formed on the length direction B of insert 1 and the middle position of width C.Insert 1 is 180 degree rotation symmetric shapes with respect to the axis of through hole 16, in other words forms secondary rotation symmetric shape.Thereby from any direction with insert 1 on imaginary plane during projection, the state that makes its axis that centers on through hole 16 rotate 180 degree with make its rotation before state under, the shape of the insert 1 of projection on imaginary plane is identical.So because insert 1 forms 180 degree rotation symmetries, thus sometimes the side's in the symmetric shape shape is explained, and omit to the explanation of the symmetrical the opposing party's of some shape shape.
In insert 1,, be formed on length direction B and go up the main cutting edge 4 that extends, and formation links to each other with an end of main cutting edge 4 and is the turning fillet cutting edge 7 that extends circular-arcly in the edge of the top surface portion of thickness direction one side's side sections.Be installed under the state on the support at insert 1; Main cutting edge 4 extends with support axis almost parallel ground; And outstanding from the outer peripheral face of support to the support radial direction, the turning fillet cutting edge 7 that links to each other with main cutting edge 4 is formed at support leading section side sections in insert 1.
So in this embodiment, it is tabular that insert 1 forms the almost parallel quadrangle, on the plane vertical with thickness direction A projection projection of shape form the almost parallel quadrangle.Below; The thickness direction that this almost parallel quadrangle is tabular is called insert thickness direction A; The tetragonal length direction of this almost parallel is called insert length direction B, will be called insert width C with the direction that insert thickness direction A and insert length direction B extend mutual vertically.Insert 1 forms rake 2 on thickness direction one side A1 face, on thickness direction the opposing party A2, form the bottom surface.In addition, insert 1 forms flank 3 on the end face of insert width C.The intersection crest line portion of rake 2 and flank 3 extends on the length direction B of insert 1.Therefore on the length direction B of main cutting edge 4 that forms in the intersection crest line portion, extend at insert.In this embodiment, be along extending with the perpendicular plane of insert thickness direction A.And insert 1 constitutes with respect to support and can load and unload, and has been connected under the state that is arranged on the face of taking a seat on the support in the bottom surface of insert 1, and insert 1 is installed on the support.
End at the width C of insert 1 has slot part 5, and this slot part 5 forms from the width end face submerges insert width C, extends along insert thickness direction A.In this embodiment, be provided with a plurality of slot parts 5 by certain interval insert length direction B.Each slot part 5 spreads all over the bottom surface from the rake 2 of insert 1 and forms, and more near the bottom surface, the size of insert length direction B is that width dimensions is big more.In addition, slot part 5 is a depth dimensions in the size of insert width C, is set to the maximum amount of feeding greater than each sword under the normally used condition in heavy cut processing, the rotary cut instrument.Insert 1 is being installed under the state of support, and each slot part 5 extends at the Zhou Fangxiang perpendicular to upper edge, the plane support 11 of the rotation of support.
Main cutting edge 4 and flank 3 on insert length direction B by slot part 5 disjunctions.Therefore, main cutting edge 4 has a plurality of separation main cutting edge 4a that are spaced from each other certain interval, on insert length direction B, arrange.In addition, flank 3 has a plurality of separation flanks that are spaced from each other certain interval, on insert length direction B, arrange.In this embodiment, owing to forming four slot parts 5 on insert length direction B, arranging on the insert 1, so main cutting edge 4 has five and separates main cutting edge 4a, and flank 3 has five and separates flanks.Each slot part 5 forms roughly the same shape, on insert length direction B, roughly equally spaced arranges.
In addition, in this embodiment, formed from rake 2 to the outstanding a plurality of projections 6 of insert thickness direction A.Each projection 6 forms respectively with the corresponding main cutting edge 4a that separates in couples, towards each paired separation main cutting edge 4a configuration.In addition, the separation main cutting edge side sections in the projection 6 forms following shape, that is, towards insert width C, along with near each corresponding separation main cutting edge 4a, its width and reducing highly gradually forms the shape that front end attenuates.Here, the height of projection 6 is projection 6 sizes on insert thickness direction A with respect to rake 2.In addition, the width of projection 6 is projection 6 sizes on insert length direction B.
Separation main cutting edge side sections in the projection 6 has: to side's projection side that insert length direction B one side exposes and the opposing party's projection side of exposing to the opposing party of insert length direction B.Two projection sides along with its towards insert thickness direction one side A1, its interval on insert length direction B reduces gradually.In addition, two projection sides intersect at insert thickness direction one side A1 side end, form the crest line portion of intersecting.The intersection crest line portion of the projection 6 that forms by two projection sides, along with its near corresponding separation main cutting edge 4a, its distance with rake 2 on insert thickness direction A reduces gradually.
In addition, as shown in Figure 2, separate the constituting on insert width C between main cutting edge 4a and the projection 6 apart from t, the shortest at the insert length direction B central portion that separates main cutting edge 4a.In addition, projection 6 and form with the said projection 6 corresponding beeline t that separate between the main cutting edge 4a: 0.5mm is above, below the 5.0mm.Through beeline t is set at more than the 0.5mm,, also can prevent when smear metal impact tab 6, to produce excess impact even insert 1 is applied under the situation of heavy cut.In addition, through beeline t is set at below the 5.0mm, can makes smear metal fully crooked, thereby the smear metal discharging performance is improved.
In this embodiment, the length X of separating main cutting edge 4a is 5.2mm, and said beeline t is 2.3mm.In addition, as after state shown in Figure 7, the protrusion angles α that the crest line of rake 2 and projection 6 forms is preferably in more than 90 °, below 170 °.In this embodiment, protrusion angles α is chosen as about 165 °.If protrusion angles α is set at less than 90 °, then smear metal clogs easily, if protrusion angles α is set at greater than 170 °, then smear metal just can not flexural deformation and become the state that stretches.In this embodiment,, under the situation that smear metal can not clog, can make its flexural deformation smoothly through protrusion angles α being chosen as about 165 °.
In addition, the formed angle beta in the crest line of projection 6 and bottom surface is chosen as about 150 °.In addition, the summit from separation main cutting edge 4a to projection 6 is chosen as 3.0mm apart from u.As the shape inscape of such projection 6, highly, width and be important to the projection front end apart from these key elements from separating main cutting edge.For example the Breadth Maximum of each projection 6 forms to such an extent that score is little from the length X of main cutting edge 4a.
In addition, in each projection 6, will be called turning radiussed protuberance 6a, the projection 6 beyond the radiussed protuberance 6a of turning will be called quadrature projection 6b corresponding to the projection of separating main cutting edge 4a 6 that links to each other with turning fillet cutting edge 7.In each projection 6, quadrature projection 6b is configured on the approximate vertical bisecting line of each corresponding separation main cutting edge 4a.Be that quadrature projection 6b partly is configured towards the length direction substantial middle of each corresponding separation main cutting edge 4a, and along extending respectively with the imaginary line that separates main cutting edge 4a quadrature and being configured.In other words, the crest line of each quadrature projection 6b extends on the vertical bisecting line of each corresponding separation main cutting edge 4a.In addition, the shape of the separation main cutting edge side fore-end of each quadrature projection 6b forms roughly the same shape.Here, so-called vertical bisecting line of separating main cutting edge 4a is: the straight line that will separate that main cutting edge 4a halves and vertically extend with respect to separation main cutting edge 4a on insert length direction B.
Turning radiussed protuberance 6a in each projection 6 forms, along with near turning fillet cutting edge 7, and its width and reducing highly gradually.In other words, above insert, overlook, the crest line of the intersection crest line portion of turning radiussed protuberance 6a with separate tilt angle theta that main cutting edge forms less than 90 °.In addition, the crest line of turning radiussed protuberance 6a preferably extends configuration along following imaginary line, this imaginary line be during insert is overlooked with separate the tilt angle theta that main cutting edge 4a become and be set at the imaginary line more than 60 °, below 85 °.In this embodiment, tilt angle theta is set at 65 °.
In addition, around the through hole 16 of the central portion of rake 2, form island, form the protrusion 15 of ring-type specifically.Protrusion 15 is outstanding to insert thickness direction one side A1 from rake 2, forms along with towards main cutting edge 4, width and the shape that reduces highly gradually.The height of so-called protrusion 15 is protrusion 15 sizes on insert thickness direction A with respect to rake 2.In addition, the width of so-called protrusion 15 is sizes on insert length direction B of protrusion 15.Protrusion 15 form than the separation main cutting edge side sections of each projection 6 more near the central authorities of insert width C.In addition, protrusion 15, under the state on the installation portion that insert 1 is installed in support with screw component 17, more outstanding to insert thickness direction A than the head of screw component 17.In addition, in this embodiment, in the projection 6 that on insert 1, forms, the projection and the protrusion 15 that are configured in insert length direction pars intermedia become one.The thickness direction one square end portion of crest line portion and protrusion of intersecting of the projection 6 that becomes one with protrusion 15 links together smoothly.Through protrusion 15 and projection 6 are formed as one, can prevent the damaged of projection 6.
Be connected in the bottom surface of insert 1 under the state of the face of taking a seat that is forming on the support, be formed on the through hole 16 on the insert 1 and be formed on the installing hole cylindraceous of support installation portion roughly coaxial.Under this state, through will having formed the through hole 16 that externally threaded screw component 17 inserts inserts 1, the installing hole of screws into bracket, thus can insert 1 be concluded on the installation portion of support.Thus, insert 1 is installed on the installation portion of support.
At the leading section of support, be formed with from the outer peripheral face of support and axis direction end face to the recess that sinks into.This recess has formed the insert receiving space of the insert 1 of accommodating installation and has temporarily accommodated from being cut the smear metal bag of the smear metal that material cuts.The adjacent setting on the Zhou Fangxiang of support of insert receiving space and smear metal bag.
Fig. 5 has been to use the overall perspective view of the rotary cut instrument 12 of insert 1,21 of the present invention.Fig. 6 is the amplification stereogram of the insert installment state of expression rotary cut instrument 12 of the present invention.Fig. 7 is the S1-S1 profile of the rotary cut instrument 12 of Fig. 6.Rotary cut instrument 12 comprises: the insert 1 and support 11 roughly cylindraceous of insert 1 can be installed with loading and unloading.In this embodiment, support 11 is equipped with at peripheral part: on support Zhou Fangxiang, separate certain intervals, a plurality of for example six inserts 1.In addition, in this embodiment, on the axis direction that is combined in support of a plurality of inserts 1 of arranging on the Zhou Fangxiang, being arranged with multiple row, for example lining up two row of support 11.Such rotary cut instrument 12 is used for processing at the big heavy cut of the cutting output of cutting at one time through an insert 1, in other words, is used for rough cut processing.
At the axis direction base end part of support 11, being formed with through connection member is that axle is maintained at the portion that is held on the milling machine.In addition, at the leading section of axis direction, be formed with the installation portion that insert 1 is installed under the state that the main cutting edge of insert 1 has been given prominence to from outer peripheral face.Milling machine comprises: mobile driving mechanism that the rotary cut instrument 12 that makes the quilt that has clamped cut material and maintenance relatively moves and rotation drive the rotary cut instrument 12 that keeps and make its rotary drive mechanism around the axis rotation of support 11.Rotary cut instrument 12 is contacted through cutting material around axis rotation, one side and the quilt of support 11 on one side, and main cutting edge 4 interrupted cuts of insert 1 are cut material.Can cut into predetermined shape with being cut material thus.For example, use rotary cut instrument 12 to carry out flange processing, groove processing and step processing etc. to being cut material.Rotary cut instrument 12; Under 4 wearing and tearing of the main cutting edge of insert 1 or damaged situation; The axis Rotate 180 degree of the installing hole that this insert 1 forms on the support 11 is installed, the insert 1 that perhaps more renews, thus can recover the cutting power of rotary cut instrument 12.
As stated, be formed with a plurality of smear metal bags 13, said insert 1 be installed with smear metal bag 13 adjacent insert receiving spaces at the periphery leading section of support 11.Say that at length said insert 1 is installed towards the mode that direction of rotation, said main cutting edge 4 are positioned at most peripheral with rake 2, main cutting edge 4 rotates together with support 11 and cuts.
In such rotary cut instrument 12; By main cutting edge 4, be by separating the smear metal 16 that main cutting edge 4a forms strictly speaking; On the rake 2 of said insert 1, from outer circumferential side towards the central side of support 11, promptly the support wall in smear metal bag 13 14 flows.
Shown in figure 31; According to the structure of having used existing insert 101; Because the smear metal 116 that generates is advanced along generating direction invariably; Collide the support wall 114 that generates direction the place ahead and bend, so support wall 114 down and is is little by little wearing and tearing with the effect of the friction of smear metal 116.
To this; As shown in Figure 7; In the insert 1 of first embodiment of the present invention,, run into the less ground bending of projection 6 backs so separate the smear metal in a narrow margin 8 that main cutting edge 4a forms by each because on the rake adjacent 2, be formed with projection 6 with respectively separating main cutting edge 4a.Consequently, smear metal 8 just is not discharged to the outside with support wall 14 bumps.Because formed this structure, can prevent the wearing and tearing of the support wall 14 in the smear metal bag 13, the result is exactly the life-span that can prolong support 11.And then; Because the bending radius through smear metal 8 diminishes, the size of each smear metal 8 also diminishes; So it is more smooth to discharge smear metal from smear metal bag 13 to the outside, can prevent generation by the unfavorable condition such as damaged of the engaging-in main cutting edge that causes 4 of smear metal, can also prolong the life-span of insert 1.
In addition, in this embodiment, like Fig. 1 and shown in Figure 2, the said main cutting edge side sections of said projection 6 forms, along with near the paired said main cutting edge 4a that separates of each and its, and its width and reducing highly gradually.Thus; Because the crest line part of the said projection 6 that contacts with smear metal 8 is along with highly reducing near said separation main cutting edge 4a, in other words; Separate main cutting edge 4a along with leaving; The height of the crest line of said projection 6 part increases gradually, so projection 6 becomes smoothly with contacting of smear metal 8, has suppressed the increase of cutting resistance.In addition, projection 6 is separated main cutting edge 4a along with oppositely leaving, and it is big that its width becomes.So makes the intensity of projection 6 increase greatly, can prevent the situation that when smear metal is impacted projection 6 is damaged, can further make the life-span prolongation of insert 1 because the width of projection 6 becomes.In addition; Because projection 6 separates the certain intervals configuration respectively on insert length direction B; So be directed into and only clash into a projection 6 by separating smear metal 8 that main cutting edge 4a forms; Be directed into the situation of clashing into smear metal 8 and compare, can reduce the cutting resistance that produces by projection 6 with a plurality of projections 6.In addition, even projection 6 is staggered by the generation direction of smear metal 8 wearing and tearing or smear metal 8 slightly, smear metal 8 is partly contacted with the crest line of a corresponding projection 6.
Further as shown in Figure 2, constituting between said separation main cutting edge 4a and the said projection 6 apart from t, the shortest in the substantial middle part of each length X of said separation main cutting edge 4a.Therefore, in the substantial middle part of the insert length direction B of each smear metal 8 that is produced by said separation main cutting edge 4a, smear metal 8 contacts with projection 6, curls to certain direction because smear metal 8 does not swing, thereby can obtain good chip removal performance.
In addition, at least one in the projection 6, crest line said the separate main cutting edge 4a paired with each and its of the main cutting edge side sections of the quadrature projection 6b beyond the turning radiussed protuberance 6a particularly is the relation of approximate right angle in the overlooking of insert 1.The smear metal 8 that the separation main cutting edge 4a that quadrature projection 6b towards the turning beyond the radiussed protuberance 6a is provided with forms separates main cutting edge 4a and flows to the direction of quadrature roughly with respect to each.In this case, because of quadrature projection 6b extends configuration with respect to separating main cutting edge 4a at orthogonal direction roughly, so can reduce the cutting resistance that produced by the smear metal of on rake 2, moving 8 and quadrature projection 6b.Simultaneously, keep the mobile impetus of smear metal 8, smear metal 8 is produced on certain orientation curl.
In addition, on insert length direction B,, each quadrature projection 6b is set towards each mid portion that separates main cutting edge 4a.In other words, quadrature projection 6b is provided with towards the length direction mid portion that separates main cutting edge 4a.Form and separate main cutting edge 4a much at one by the width that separates the smear metal 8 that main cutting edge 4a forms.In this case, quadrature projection 6b contacts with the width middle body of smear metal 8.Therefore quadrature projection 6b has prevented swinging of smear metal 8, can be with smear metal 8 guiding with respect to separating the roughly direction of quadrature of main cutting edge 4a.Prevent in addition to be in contact with one another, thereby can prevent that smear metal 8 is blocked in the smear metal bag 13 by a plurality of smear metals 8 that each separation main cutting edge 4a produces respectively.
Of the back in addition, the two kind inserts different at the allocation position that will separate main cutting edge 4a are installed under the situation of carrying out cut on the support 11, become big with the sectional area of the corresponding smear metal 8 of the middle body that separates main cutting edge 4a.In this embodiment; Because projection 6 is towards the middle body configuration that separates main cutting edge 4a; So can make the smear metal 8 middle sections big part of long-pending change be connected to projection 6; Can be more reliably directs chips 8 reposefully, can reduce the cutting resistance that is produced by projection 6, make smear metal 8 produce flexural deformations.
In addition according to this embodiment, projection 6 with respectively separate main cutting edge 4a and form in pairs.Be that each separates main cutting edge 4a and a projection 6 forms respectively in pairs.Collide with a projection 6 and be directed by separating 8 of smear metals that main cutting edge 4a forms, thereby compare, can reduce the cutting resistance that is produced by projection 6 with smear metal 8 and a plurality of projections 6 collisions and situation about being directed.
In addition; Because of the separation main cutting edge 4a near turning fillet cutting edge links to each other with turning fillet cutting edge 7; So smear metal 8 that forms by separation main cutting edge 4a near turning fillet cutting edge; Form link to each other with the smear metal 8 that forms by turning fillet cutting edge 7 circular-arc, and on rake 2, generate with respect to separating main cutting edge 4a to tilt.As stated, turning radiussed protuberance 6a forms the fillet cutting edge 7 towards the turning, and width and reducing highly gradually.Thus, can make the part in cross section form circular-arc smear metal 8 full blasts and crooked through said turning fillet cutting edge 7 to certain direction.In addition, can make by turning fillet cutting edge 7 and separate the smear metal 8 that main cutting edge 4a forms and impact turning radiussed protuberance 6a sleekly, can reduce the cutting resistance that produces by turning radiussed protuberance 6a with coupled.
In addition; In the overlooking of insert; The crest line of turning radiussed protuberance 6a is with said to separate the tilt angle theta that main cutting edge 4a is be more than 60 °, below 85 °, is best in view of the point of less bending more reliably from making the smear metal 8 that formed by turning fillet cutting edge 7.If tilt angle theta is less than 60 °, then smear metal 8 clogs easily, and the cutting resistance that is produced by projection may increase.In addition, if tilt angle theta surpasses 85 °, then because smear metal 8 is difficult to bending; Just the wearing and tearing of cradle wall face 14 can not improve; It is big that the size of smear metal 8 becomes, and the chip removal performance descends, and also might produce the unfavorable condition such as damaged owing to the engaging-in cutting edge that causes of smear metal 8 simultaneously.
In this embodiment, because the crest line of turning radiussed protuberance 6a is more than 60 °, below 85 ° with separating the tilt angle theta that main cutting edge is, be set at 65 ° particularly, said unfavorable condition can not take place therefore.Therefore, the cutting resistance that is produced by turning radiussed protuberance 6a is reduced, can make smear metal 8 flexural deformation more reliably that forms by turning fillet cutting edge 7 and coupled separation main cutting edge 4a.
In addition, further, through around the through hole 16 of the central portion of rake 2; Form island; Form the protrusion 15 of ring-type specifically, thereby even under the inadequate condition of flecition of 6 pairs of smear metals 8 of projection, smear metal 8 also can be crooked by reliably.And; Like Fig. 6 and shown in Figure 7; Be installed at insert 1 under the state of support 11; Because the head that tightens up the screw component 17 of usefulness is hidden in the protrusion 15 of ring-type, promptly the head of screw component 17 is in the state lower than the protrusion of ring-type 15, so the wearing and tearing of the head of the screw component 17 that can prevent to be caused by the impact of smear metal 8.In addition, because along with the other direction A2 to the insert thickness direction, it is big that slot part 5 width become, so can prevent to be cut the wall that the cutting residual fraction that produces on the material is connected to slot part 5, can reduce the cutting resistance that is produced by slot part 5.
As stated; According to this embodiment, separate the smear metal in a narrow margin 8 that main cutting edge 4a forms by each, through be formed on rake 2 on projection 6a, 6b contact; Smear metal 8 flexural deformations; Radius of curvature diminishes, and smear metal 8 was ruptured before touching the support wall 14 that is formed on the support 11, to the external moving of smear metal bag 13.Thus, can prevent smear metal 8 bump support walls 14 and make support wall 14 produce damage.In addition, can prevent that the rigidity of support 11 from descending, prevent to be cut the deterioration of the machining accuracy of material.In addition, can prolong the service life of support 11 and long-term the use can be realized the insert 1 of high performance-price ratio and the rotary cut instrument 12 that insert 1 is installed.
Further, smear metal 8 is through contacting with projection 6, and its radius of curvature diminishes, and the size of smear metal 8 also diminishes.Thus, smear metal 8 is moved outside support from smear metal bag 13 smoothly, can improve the chip removal performance.Therefore can be suppressed at the obstruction of the smear metal of smear metal bag 13, the unfavorable condition such as engaging-in of smear metal 8.In addition; The smear metal 8 of impact tab 6; Because separated main cutting edge 4a cutting formation smear metal in a narrow margin; So the increase of the cutting resistance that can prevent to be caused by projection 6 when projection 6 from impacting with smear metal 8 can make cut carry out more reposefully, even and carry out heavy cut and also can prevent the damaged of projection 6.For example, through using the insert of this embodiment, can realize that smear metal discharge rate, the quilt that promptly can cut in a minute cut the volume of material and reach 1000cc/min.
(second embodiment)
Fig. 8 is the overall perspective view of the insert 21 of expression second embodiment of the invention, and Fig. 9 is the vertical view of expression insert 21.In first embodiment of the present invention shown in Figure 1, example shows by four slot parts 5 to be cut apart main cutting edge 4 and separates the insert 1 that main cutting edge 4a constitutes by five.The insert 21 of second embodiment of the present invention, as shown in Figure 8, main cutting edge 4 is cut apart by three slot parts 5 and is made up of four separation main cutting edge 4a.Like this, insert of the present invention also comprises the number of slot part 5 and the configuration insert different with first embodiment of each slot part 5 certainly.
As first embodiment of the present invention and second embodiment, on the insert that possesses slot part 5 on the main cutting edge 41,21; Because slot part 5 does not cut; Install on 11 on support under the situation of insert of a plurality of single kind, cut the residual portion of cutting that can produce band shape on the processing wall of material.To this; Through being configured in alternately on the same circumference of support 11 by the mutual different insert 1,21 of first embodiment first insert of representing 1 and the configuration of representing by second embodiment second insert 21, slot part 5; Thereby the separation main cutting edge 4a of second insert 21 cutting is residual by the cutting that the slot part 5 of first insert 1 causes; Therefore can prevent that consequently the cutting that is caused by slot part 5 is residual, can being suppressed at quilt after the cutting, to cut the ladder that generates on the processing wall of material poor.Rotary cut instrument 12 shown in Figure 5 has been represented the insert 1 of first embodiment and insert 21 mutual state of installing on Zhou Fangxiang of second embodiment.
Secondly, for the insert 21 of second embodiment of the present invention, utilize Fig. 8 and Fig. 9 to explain.In addition, indicate same symbol, omit the explanation of repetition for the part identical with insert 1 structure of first embodiment shown in Figure 1.In the insert 21 of second embodiment; With the difference of the insert 1 of first embodiment shown in Figure 1 be; The cutting residual fraction that generates for the slot part 5 that eliminates by the insert 1 of first embodiment is at the position configuration slot part 5 different with the insert of first embodiment 1.
In addition, separation main cutting edge 4a, 4b, 4c form different length, and corresponding to each length of separating main cutting edge 4a～4c, the number that increases the projection 6 corresponding with respectively separating main cutting edge 4a～4c disposes projection 6.According to such structure, under effect,, also can make smear metal bending reliably even form the smear metal of wide cut for the separation main cutting edge 4b that eliminates the residual and length that forms of the cutting that generates by the insert of first embodiment 1,4c.
In other words, the insert 21 of second embodiment in a plurality of separation main cutting edge 4a～4c, exists length long separation main cutting edge 4b, 4c, with length short separate main cutting edge 4a.With corresponding to length the number of the short projection 6b that separates main cutting edge 4a compare, increase corresponding to length long separation main cutting edge 4b, the projection 6c of 4c, 6d; The number of 6e, 6f and being provided with.So, can increase and the number of separating the corresponding projection of main cutting edge 4a～4c corresponding to the length of separating main cutting edge 4a～4c.Thus, can make by the long separation main cutting edge 4b of length, wide cut smear metal 8 flexural deformation more reliably that 4c forms, and corresponding to length long separation main cutting edge 4b, the projection 6c of 4c, 6d; 6e, 6f can prevent by the smear metal 8 of wide cut that impact caused was damaged.
In this embodiment, be formed with from rake 2 to the outstanding a plurality of projection 6b～6f of insert thickness direction A.Each projection 6b～6f is formed with more than one projection corresponding to the separation main cutting edge 4a～4c of correspondence, and is provided with towards each corresponding separation main cutting edge 4a～4c respectively.In addition, the separation main cutting edge side sections in the projection 6, towards insert width B, along with near each corresponding separation main cutting edge 4a～4c, its width and reducing highly gradually forms the shape that front end attenuates.
Separation main cutting edge side sections in the projection 6 has: to side's projection side that the direction of insert length direction B is exposed and the opposing party's projection side of exposing to the opposing party of insert length direction B.Two projection sides relative to each other, along with towards insert thickness direction one side A1, the interval of insert length direction B reduces gradually.In addition, two projection sides in the end portions cross of insert thickness direction one side's side, form the crest line portion of intersecting.The intersection crest line portion of the projection 6 that is formed by two projection sides, along with near corresponding separation main cutting edge 4a～4c, it reduces with the distance of rake 2 on insert thickness direction A gradually.In addition, like Fig. 8 and shown in Figure 9, separate between main cutting edge 4a～4c and the projection 6 on the insert width apart from t, the shortest at the roughly insert length direction middle body of separation main cutting edge 4a.In addition, the Breadth Maximum of each projection 6b～6f forms littler than the size on insert length direction B of each corresponding separation main cutting edge 4a～4c.
Link to each other with turning fillet cutting edge 7 near first bight separate main cutting edge 4b and turning fillet cutting edge 7 opposition sides near second bight separate main cutting edge 4c, the size on the insert length direction forms to such an extent that separate main cutting edge 4a than remaining and grow.In addition, with near first and second bight separate main cutting edge 4b, 4c is corresponding, disposes two projection 6c, 6d respectively; 6e, 6f.Therefore, at separation main cutting edge 4b, 4c, dispose two projection 6c, 6d respectively near each bight with facing; 6e, 6f.
In corresponding to a plurality of projection 6c that are provided with near the separation main cutting edge 4b in first bight, 6d,, the projection beyond the first projection 6d is called the second projection 6c with being called the first projection 6d near the projection of turning fillet cutting edge 7 configurations.The first projection 6d forms, along with near turning fillet cutting edge 7, and its width and reducing highly gradually.In other words, in the overlooking of insert, the first projection 6d, its intersect crest line portion crest line with separate the tilt angle theta that main cutting edge 4b is and spend less than 90.This tilt angle theta preferably sets for more than 60 °, below 85 °, θ is set at 65 ° in this embodiment medium dip angle.In addition, the crest line of the second projection 6c extends configuration with respect to the separation main cutting edge 4b approximate right angle ground near first bight.Corresponding to the leading section on the insert width C of a plurality of projection 6c that are provided with near the separation main cutting edge 4b in first bight, 6d, be configured in about the position of symmetry near the vertical bisecting line of the separation main cutting edge 4b in first bight and roughly.
In addition, will be corresponding near the separation main cutting edge 4c in second bight and a plurality of projections 6 that are provided with are called the 3rd projection 6f, 6e.In the separation main cutting edge 4c configuration relatively respectively near second bight, its crest line extends configuration with respect to the separation main cutting edge 4c approximate right angle ground near second bight respectively for the 3rd projection 6f, 6e.In addition; Corresponding near the separation main cutting edge 4c in second bight and a plurality of projection 6e that are provided with, the leading section on insert width C of 6f, be configured in about the position of symmetry near the vertical bisecting line of the separation main cutting edge 4c in second bight and roughly.
In addition, will be called the 4th projection 6b with the corresponding projection of main cutting edge 4a 6 of separating of separating beyond main cutting edge 4b, the 4c near each bight.In the insert length direction central portion configuration relatively respectively of each corresponding separation main cutting edge 4a, its crest line extends with respect to the separation main cutting edge 4a approximate right angle ground of correspondence the 4th projection 6b respectively.That is, the 4th projection 6b extends setting respectively along the vertical bisecting line of each corresponding separation main cutting edge 4a.
With the turning fillet cutting edge 7 immediate first projection 6d, tilt with respect to separation main cutting edge 4b near first bight.In view of the above; By link to each other with turning fillet cutting edge 7 near first bight separate that main cutting edge 4b and turning fillet cutting edge are 7 that generate, the cross section by linearity partly and the wide cut smear metal 8 that constitutes of circular-arc part; Its circular-arc part by the second projection 6c beyond the first projection 6d, is produced flexural deformation by the said first projection 6d, its linearity part the most efficiently.
In addition, further, among the two ends of said main cutting edge 4, also be provided with two projection 6e, 6f, they are corresponding to the separation main cutting edge 4c near second bight of turning fillet cutting edge 7 opposition sides.But because cutting is not participated in the bight of turning fillet cutting edge 7 opposition sides, so the cross section of the smear metal that is formed by the separation main cutting edge 4c near second bight is the near linear shape, and any part is not circular-arc.Therefore; The 3rd projection 6e, the 6f of corresponding formation with second bight; Because the crest line of separation main cutting edge side sections is configured to be in the roughly position of quadrature with the main cutting edge 4c that separates near second bight, and the smear metal 8 of the wide cut of generation is not vacillated now to the left, now to the right and bending positively on certain direction.
In this above embodiment, formed more than one projection 6 corresponding to separating main cutting edge.In view of the above, can make smear metal 8 be connected to one or more projection 6b～6f, make smear metal 8 flexural deformations.Through making smear metal 8 be connected to a plurality of projections 6; Make smear metal 8 flexural deformations; Even under the rigidity condition with higher of sectional area than big and smear metal 8 of smear metal 8; Impulsive force from smear metal 8 also can be shared by a plurality of projections 6, and it is damaged to prevent that projection 8 from producing, and can make smear metal 8 abundant flexural deformations.
As this embodiment; In a plurality of separation main cutting edges; Exist under the situation of separating main cutting edge of long separation main cutting edge and weak point; With corresponding to length the number of the short projection 6b that separates main cutting edge 4a compare, through increasing corresponding to length long separation main cutting edge 4b, the projection 6c of 4c, 6d; The number of 6e, 6f can make by long separation main cutting edge 4b, the wide cut smear metal flexural deformation more reliably that 4c forms, and can prevent simultaneously corresponding to long separation main cutting edge 4b, the projection 6c of 4c, 6d; 6e, 6f produce damaged under the impact of the smear metal 8 of wide cut.In addition, undesirable increase of the number of the projection 6 that prevents to form corresponding to short separation main cutting edge 4a can reduce the cutting resistance that is produced by projection.
By near the separation main cutting edge 4a beyond the separation main cutting edge 4b of turning fillet cutting edge 7, the smear metal that 4c forms, to corresponding with each separate main cutting edge 4a, 4c roughly the direction of quadrature move.In this embodiment; With near separating main cutting edge 4a, each projection 6b, 6e, 6f that 4c is corresponding beyond the main cutting edge 4b separating of turning fillet cutting edge 7; Through roughly extending configuration on the direction of quadrature with corresponding main cutting edge 4a, the 4c of separating respectively; Thereby, can reduce the cutting resistance that produces by projection 6b, 6e, 6f for to respect to separating the roughly direction of the quadrature smear metal of moving of main cutting edge 4a, 4c.In addition; For example each projection 6b, 6e, 6f; Through towards the configuration of the insert length direction pars intermedia of each corresponding separation main cutting edge 4a, 4c, can prevent vacillating now to the left, now to the right of smear metal, can make smear metal to respect to separate main cutting edge roughly the direction of quadrature move; Can prevent that a plurality of smear metals from contacting with each other, thereby can prevent that smear metal from stopping up in the smear metal bag.
Separation main cutting edge 4b near turning fillet cutting edge 7; Because it links to each other with turning fillet cutting edge 7; So smear metal that forms by separation main cutting edge 4b near turning fillet cutting edge 7; Form link to each other with the smear metal that is formed by turning fillet cutting edge 7 circular-arc, this smear metal is moved with respect to separating main cutting edge 4a on rake 2 obliquely.In this embodiment; With separating among the corresponding a plurality of projection 6c of main cutting edge 4b, the 6d near turning fillet cutting edge 7; Because the first projection 6d that disposes near turning fillet cutting edge 7 forms; The fillet cutting edge 7 towards the turning and its width and reduce highly gradually impact the first projection 6d so can make by turning fillet cutting edge 7 with the smear metal that main cutting edge 4b forms that separates that is attached thereto sleekly, can reduce the cutting resistance that is produced by the first projection 6d.In addition, can make by turning fillet cutting edge 7 and the smear metal flexural deformation sleekly that main cutting edge 4b forms that separates that is attached thereto.
In addition; The first projection 6d is through along extending at the imaginary line more than 60 °, below 85 ° and be provided with the tilt angle theta that main cutting edge 4b is of separating near turning fillet cutting edge 7; The cutting resistance that produces by the first projection 6d can be reduced, and the smear metal flexural deformation more reliably that forms by turning fillet cutting edge 7 can be made.For example, if said tilt angle theta less than 60 °, then smear metal clogs easily, can increase the cutting resistance that is produced by the first projection 6d.In addition, if tilt angle theta surpasses 85 °, then because smear metal is difficult to flexural deformation; So not only the wearing and tearing of support wall 14 can not get improving; It is big that the size of smear metal becomes, and the chip removal performance also reduces, and also possibly produce the unfavorable condition such as damaged owing to the engaging-in cutting edge that causes of smear metal simultaneously.
In addition, if tilt angle theta less than 60 °, then when partly having impacted the first projection 6d by the smear metal that separating of linking to each other with turning fillet cutting edge 7, main cutting edge 4b formed, the cutting resistance of generation becomes excessive.In addition, if tilt angle theta surpasses 85 °, then when the first projection 6d had partly been impacted in the smear metal that is formed by turning fillet cutting edge 7, the cutting resistance of generation became excessive.
In this embodiment, be more than 60 °, below 85 ° because set tilt angle theta, so described problem can not take place, can make the smear metal flexural deformation that forms by turning fillet cutting edge 7 more reliably.
In addition, as this embodiment, also can increase number corresponding to separating main cutting edge 4a～4c corresponding to the projection 6 of separating main cutting edge 4a～4c.For example, under the situation that forms the different separation main cutting edge of length, the number of the projection of setting corresponding to the long separation main cutting edge 4b of length, 4c 6 is set more than the number of the projection of setting corresponding to the short separation main cutting edge 4a of length 6.Impact a plurality of projection 6c, 6d by the long separation main cutting edge 4b of length, the high smear metal of rigidity that 4c forms; 6e, 6f.Corresponding to the rigidity of the smear metal that forms thus, one or more projection 6 can be shared the power that applies from smear metal, can prevent the damaged of each projection.
Whenever the length of separating main cutting edge 4a～4c surpasses the setting range of predesignating, can increase the number of corresponding projection 6.But, if the number of the projection 6 corresponding with separating main cutting edge 4a～4c is too much, then exist the cutting resistance that produces by projection to increase, the smear metal meeting produces the anxiety of obstruction in the prominence.In addition, if not enough, then, occur damaged sometimes according to the size of projection 6 with the number of separating the corresponding projection 6 of main cutting edge 4a～4c.
In addition, the structure that in Fig. 8, forms is, just separates main cutting edge 4b, projection 6c, 6d that 4c is corresponding with two of the two ends that have said main cutting edge 4 respectively near the bight; The number of 6e, 6f is a plurality of, in order to obtain same effect, corresponding to the length of said separation main cutting edge, with the number of separating the corresponding projection of main cutting edge of the optional position of insert also can be for a plurality of.
(the 3rd embodiment)
Figure 10 is the overall perspective view of the insert 31 of expression the 3rd embodiment of the present invention, and Figure 11 is a side view of simply representing the long side of insert 31.In the 3rd embodiment, each separates main cutting edge 4a and tilts to extend with respect to the plane perpendicular to insert thickness direction A.About other structure,, indicate the reference marks identical with first embodiment because identical with first embodiment and omit explanation.Each separates main cutting edge 4a, along with advancing to length direction one side who approaches turning fillet cutting edge 7, on insert thickness direction A, tilts to the direction away from the bottom surface.In this embodiment, each separates main cutting edge 4a, extends along a predefined imaginary line respectively.
In this embodiment, because main cutting edge 4 is made up of divided a plurality of separation main cutting edge 4a on insert length direction B, so the smear metal that forms is separated, and its size on width is less.In addition, compare, can shorten the length of main cutting edge, the cutting resistance in the time of can reducing cutting with the lengthwise dimension that insert is all.Further, because with respect to the bottom surface of insert 1, each separates, and main cutting edge 4a is formed inclinedly, so can on the rotary cut instrument 12 that insert 1 is installed, form the axial rake of positive direction.Thus, can further improve, reduce from the cutting resistance of being cut material to being cut the tack of material.Therefore, even carry out the increase that heavy cut processing also can suppress cutting resistance, the dither in can suppressing more reliably to process.
In addition, in this embodiment,,, can make projection 6 flexural deformations and form little size so contact with projection 6 through smear metal because identically also formed projection 6 with said each embodiment.Thus, can prevent smear metal bump support wall 14, simultaneously smear metal is dropped out easily from smear metal bag 13, improve the chip removal performance.In addition, in this embodiment, tilt owing to separate main cutting edge 4a, move to the direction towards the support base end part from the smear metal that separates main cutting edge 4a discharge, smear metal drops out from the smear metal bag easily, can further improve the chip removal performance.In this case, the crest line of projection 6 preferably extends along the discharge direction of smear metal.Thus, can make smear metal crooked sleekly.
In addition, in this embodiment, make and separate the bottom surface inclination of main cutting edge 4a, produce axial rake with respect to insert 1.Thus, there is no need to make the face of taking a seat that on support 11, forms,, can suppress the minimizing of the wall thickness of support 11 thus, can suppress the reduction of the rigidity of support 11, can prolong the service life of support 11 with respect to the bigger inclination of support shaft alignment support Zhou Fangxiang.In addition, can improve the tack of cutting material to quilt, can reduce from being cut the cutting resistance that material applies.Therefore, even carry out the heavy cut processing that the cutting output of cutting at one time becomes bigger, also can suppress the increase of cutting resistance, the dither in can suppressing more reliably to process.
In addition, in this embodiment, each separates main cutting edge 4a and is configured in respectively on the imaginary line L3 who predesignates.Thus, can prevent to clash into length direction the opposing party's separation main cutting edge by the smear metal under separation main cutting edge cutting among two separation main cutting edge 4a arranged side by side on the insert length direction B, length direction one side.Thus, the smear metal of discharge can further improve the chip removal performance easily to support base end part fast moving.
Figure 12 is the side view of long side of insert 31a of variation of the insert 31 of simple expression the 3rd embodiment of the present invention.The insert 31 of this insert 31a and Figure 10 and the 3rd embodiment shown in Figure 11 is similar, and the incomplete structure explanation for identical indicates identical reference marks.
Shown in figure 12, the insert 31a of variation is observing under the situation of side end from insert width C, is formed with: form the separation main cutting edge that respectively separates main cutting edge 4a and form part 8; And between the cutting edge that separates between the main cutting edge 4a part 9.Be positioned at separate main cutting edge form part 8 insert thickness direction one side A1 the edge respectively separate main cutting edge 4a, extend abreast respectively.In addition, separate the length direction one side's side end of main cutting edge 4a and the thickness direction size T1 of bottom surface, form identical size respectively.In addition, the edge of the insert thickness direction one side A1 of part 9 between cutting edge, along with from the turning fillet cutting edge 7 away from insert length direction B advance, on insert thickness direction A, to tilting near the direction of bottom surface.The insert 31a of such variation can obtain the effect identical with above-mentioned insert 1.In addition, can increase and respectively separate the thickness direction wall thickness that main cutting edge forms part 8, can prevent the damaged of main cutting edge.In addition; Can increase part 9 and poorer away from the ladder between the cutting edge formation part of turning fillet cutting edge 7 more in the longitudinal direction between cutting edge than part 9 between this cutting edge; This ladder difference partly can be used as the chip breaking portion of smear metal sectionalization (chip breaker) is worked; Can the smear metal sectionalization can further be improved the chip removal performance.
Figure 13 is other the side view of long side of insert 31b of variation of the insert 31 of simple expression the 3rd embodiment of the present invention.The insert 31 of this insert 31b and Figure 10 and the 3rd embodiment shown in Figure 11 is similar, and the incomplete structure explanation for identical indicates identical reference marks.
Shown in figure 13, observing under the situation of side end from insert width C, the insert 31b of other variation is formed with: form the separation main cutting edge that respectively separates main cutting edge 4a and form part 8; And between the cutting edge that separates between the main cutting edge 4a part 9.Be positioned at separate main cutting edge form part 8 insert thickness direction A1 the edge respectively separate main cutting edge 4a, extend abreast respectively.In addition, separate the length direction one side's side end of main cutting edge 4a and the insert thickness direction A size T1 of bottom surface, form identical size respectively.In addition, the edge of the insert thickness direction one side A1 of part 9 between cutting edge, along with from the turning fillet cutting edge 7 away from insert length direction B advance, on thickness direction, tilt to the direction of leaving the bottom surface.The insert 31b of such variation can obtain the effect identical with above-mentioned insert 1.In addition, can increase and respectively separate the thickness direction wall thickness that main cutting edge forms part 8, can prevent the damaged of main cutting edge.In addition, part 9 and poorer away from the ladder between the cutting edge formation part 8 of turning fillet cutting edge 7 more in the longitudinal direction between cutting edge can be reduced, the damaged of main cutting edge can be prevented more reliably than part 9 between this cutting edge.In addition, smear metal is poor through crossing this ladder, and the flexural deformation of less ground reduces the size of smear metal, thereby can further improve the chip removal performance of the smear metal that drops out from smear metal bag 13.
(the 4th embodiment)
Figure 14 is the overall perspective view of the insert 41 of expression the 4th embodiment of the present invention, and Figure 15 is the side view of the long side of expression insert 41.The insert 1 of this insert 41 and above-mentioned first embodiment is similar, and the incomplete structure explanation for identical indicates identical reference marks.
The insert 1 of above-mentioned first embodiment through utilizing the part excision of one or more slot part 5 with rake 2, has formed a plurality of separation main cutting edge 4a.To this, in the insert 41 of the 4th embodiment, main cutting edge 4 is made up of a plurality of separation main cutting edge 4a that on insert length direction B, arrange, and each separates main cutting edge 4a and is formed on the position of staggering on the insert thickness direction A.So, poor through on each separation main cutting edge 4a, on thickness direction A, forming ladder, thus a plurality of separation main cutting edge 4a does not link to each other, and each separates main cutting edge 4a and generates smear metal respectively.Therefore, can form smear metal in a narrow margin, reduce cutting resistance.
In addition, in this embodiment,, formed, respectively with respectively separate main cutting edge 4a corresponding projection 62 outstanding from rake with the insert of above-mentioned embodiment 1 identical ground.About the shape and the configuration of projection 6, because identical with above-mentioned embodiment and omit.So, formed projection 6, thereby can utilize projection 6 to make by separating the flexural deformation respectively of smear metal in a narrow margin that main cutting edge 4a generates through separating main cutting edge 4a corresponding to each.Thus, can prevent smear metal contact brackets wall 13.In addition,, smear metal is discharged sleekly from smear metal bag 13, can improve the chip removal performance through reducing the radius of curvature of smear metal.In addition, in this embodiment, each separates main cutting edge 4a and forms, and tilts along with the distance near turning fillet cutting edge 7, itself and bottom surface becomes the earth.In this embodiment, be not limited thereto, also comprise and respectively separate the main cutting edge 4a situation parallel with the bottom surface.In addition, be also contained among a plurality of separation main cutting edge 4a the inclination condition of different of a part.In addition, separating under the situation of main cutting edge 4a with respect to the bottom surface inclination, preferably forming the crest line of projection 6 along the generation direction of the smear metal of moving from separation main cutting edge 4a.
As stated,, be installed in 11 last times of support, installing with the different mode in position of separating main cutting edge no matter be the insert 31 of the 3rd embodiment and the insert 41 of the 4th embodiment.Thus, it is residual to reduce the cutting that is caused by slot part 5.In addition, corresponding to the length of separating cutting edge, can select the configuration of the number and the projection 6 of projection 6 respectively.
(the 5th embodiment)
Figure 16 is the overall perspective view of the insert 51 of expression the 5th embodiment of the present invention, and Figure 17 is the vertical view of expression insert 51, and Figure 18 is the side view of the long side of expression insert 51, and Figure 19 is the side view of the short brink of expression insert 51.
The insert 51 of the 5th embodiment of the present invention shown in Figure 16 has and forms the roughly tabular body of polygonal, below body, possesses bottom surface 52, possesses rake 53 in the above, possesses flank 54 in the side.Therefore, the intersection crest line portion at rake 53 and flank 54 is formed with main cutting edge 55.
At this, on flank 54, be formed with the major trough portion 56 that its two ends arrive rake 53 and bottom surface 52.Main cutting edge 55 is made up of a plurality of first separation main cutting edge 55A of being cut apart by each major trough portion 56.In addition, flank 54 is made up of a plurality of separation flank 54A of being cut apart by each major trough portion 56.Further, separating on the flank 54A, dispose secondary slot part 57, this pair slot part 57 is arranged side by side with mode and said major trough portion 56 that the one of which end arrives rake 53.In addition, the first separation main cutting edge 55A is made up of a plurality of second separation main cutting edge 55a of being cut apart by an end of secondary slot part 57.
The insert 51 of the 5th embodiment has the insert 21 similar structures with second embodiment; Difference is: the insert 51 of the 5th embodiment does not have the projection that on the insert 21 of second embodiment, forms, and has the secondary slot part 57 that on the insert 21 of second embodiment, does not form.In addition, the major trough portion 56 of the insert 51 of the 5th embodiment, corresponding with the slot part 5 that on the insert 21 of second embodiment shown in Figure 8, forms, have identical structure.In the insert 51 of the 5th embodiment, its explanation of incomplete structure for corresponding with the insert of second embodiment 21 does not describe the part with structurally associated secondary slot part 57 that do not form on the insert 21 of second embodiment.
Like Figure 16～shown in Figure 19, the insert 51 of the 5th embodiment of the present invention has major trough portion 56; With the secondary slot part 57 that forms forr a short time than major trough portion 56.Major trough portion 56 is formed at the width end of insert 51, is absorbed in the insert width C from the width end face, on insert thickness direction A, extends to form.Major trough portion 56 spreads all over bottom surface 52 and forms from the rake 53 of insert 51, along with near bottom surface 52, expands to insert length direction B two sides.In other words, major trough portion 56 is from rake 53 arrival bottom surfaces 52.
Main cutting edge 55 and flank 54 are separated on insert length direction B by major trough portion 56.Therefore, main cutting edge 55 has a plurality of first separation main cutting edge 55A that are spaced from each other at interval and on insert length direction B, arrange.In addition, flank 54 has a plurality of separation flank 54A that are spaced from each other the interval and on insert length direction B, arrange.In this embodiment, on insert 51,,, main cutting edge 55 separates main cutting edge 55A so having four first because formed three major trough portions 56 of on insert length direction B, arranging, and flank 54 has four and separates flank 54A.The shape of each major trough portion 56 forms roughly the same shape, on insert length direction B, roughly uniformly-spaced arranges.In the scope that edge strength can be kept, select shape, configuration and the number of major trough portion 56.
In addition, secondary slot part 57 is formed at the width end of insert 51, is absorbed in the insert width C from the width end face, on insert thickness direction A, extends to form.Secondary slot part 57 extends at insert thickness direction A from the rake 53 of insert 51.In addition, secondary slot part 57 is compared with major trough portion 56, and it is absorbed in the amount of insert 51, and promptly the degree of depth forms for a short time.
In addition, the size of the insert thickness direction C of major trough portion 56 and secondary slot part 57 is set to the maximum amount of feeding greater than each cutter of predefined rotary cut instrument 12 at least.In this embodiment, the size of the insert width C of major trough portion 56 is set at the size that is reduced to critical value of cutting resistance, and the size of the insert width C of secondary slot part 57 is set at the maximum of the amount of feeding of anticipation.In addition, the size of the insert length direction of major trough portion 56, insert width and insert thickness direction is set to respectively: the necessary size of keeping the intensity of insert 1.
In this embodiment, on insert 51, set back angle.Flank 54 along with it 52 advances at insert thickness direction A towards the bottom surface from rake 53, is absorbed in insert width C towards the inboard.The bottom branch of secondary slot part 57 is configured in the position of on insert width C, giving prominence to more than the part of intersecting with bottom surface 52 in the flank 54.Thus, secondary slot part 57 is formed at: in the width end of insert 51, removed on the part near rake 53 near the part of bottom surface 52.In addition, the insert width wall of secondary slot part 57 extends with insert thickness direction A almost parallel ground.
And each secondary slot part 57 forms, and is in the degree of depth, littler than major trough portion 56 at least one of width and length.Even promptly the degree of depth of each secondary slot part 57 and width are less, if the degree of depth, or as long as on width little than major trough portion 56.Additional disclosure once, in this embodiment, each secondary slot part 57 is compared with each major trough portion 56, on the degree of depth, width and length, forms all for a short time respectively.Secondary slot part 57 is formed at respectively between two adjacent on insert length direction B major trough portions 56 and between major trough portion 56 and the insert length direction end face portion.That is, each secondary slot part 57 is disposed at respectively: the position that will be divided into a plurality of parts by the first separation main cutting edge 55A that major trough portion 56 is cut apart.
In this embodiment, main cutting edge 55 has: the first separation main cutting edge that the insert lengthwise dimension is long separates main cutting edge with first of insert lengthwise dimension weak point.The first long separation main cutting edge is divided into three second by two secondary slot parts 57 and separates main cutting edges.In addition, the first short separation main cutting edge is divided into two separation main cutting edges by a secondary slot part 57.Thus, the second separation main cutting edge separates main cutting edge with first length has nothing to do, and its length can shorten.So, each secondary slot part 57 is configured in and separates on the position of main cutting edge bisection or trisection first.
In this such embodiment; The number that will comprise the major trough portion 56 that the flank 54 of main cutting edge 55 cuts apart; Be formed in the scope of the number that can keep edge strength; In order to realize the further reduction of cutting resistance, utilize than major trough portion's 56 little secondary slot parts 57 and further the first separation main cutting edge 55A is separated into a plurality of second separation main cutting edge 55a.Through such structure, the reduction of the intensity of the cutting blade of inhibition formation main cutting edge can reduce cutting resistance.Consequently, even especially in the big heavy cut processing of the depth of cut etc., it is damaged also insert 51 not to be taken place, and suppresses dither.
About newly-installed secondary slot part 57 and major trough portion 56 in this embodiment, as follows, as the inscape of slot part, its width W, depth D, these three sizes of length L are important.Shown in figure 17, width W 1, the W2 of each slot part 56,57 is the sizes on insert length direction B, be the wall of rake 53 and each slot part 56,57 intersection crest line portion, and two intersection points of the imaginary line of main cutting edge 5 between distance.In other words, be insert lengthwise dimension between insert length direction two walls of slot part 56,57.
In addition, depth D 1, the D2 of each slot part 56,57 are sizes of insert width C, are the longest distances on insert width C till the said intersection crest line portion from the imaginary line of main cutting edge 55 to each slot part.In other words, be insert width C size near the flank 54 the rake 53 to the insert width wall of slot part 56,57.
Further; Shown in figure 18; Length L 1, the L2 of each slot part 56,57 are sizes of insert thickness direction A, are the bottom surfaces 52 of insert 51 when resting on the tabular surface, from the beeline of the insert thickness direction A of the end to end of each slot part of arriving rake 53.
At this, particularly for the width W 2 of secondary slot part 57, preferably make more than 1/6, below 5/6 of its width W that is in major trough portion 56 1, can make like this and reduce cutting resistance and keep edge strength and obtain balance and taken into account simultaneously.1/6 little than the width W 1 of major trough portion 56 of the width W 2 of secondary slot part 57 if this is, then the reduction effect of cutting resistance is not remarkable, if the width W 2 of secondary slot part 57 5/6 big than the width W 1 of major trough portion 56, the insufficient strength of then cutting blade.That is, such structure is because can keep second of appropriateness to separate the cutting edge length of main cutting edge 55a, so can prevent the tipping of cutting edge, damaged and breakage etc. effectively.
In addition, particularly for the depth D 2 of secondary slot part 57, preferably make more than 1/6, below 5/6 of its depth D that is in major trough portion 56 1.1/6 little than the depth D 1 of major trough portion 56 of the depth D 2 of secondary slot part 57 if this is, the tendency that the amount of feeding when there is the proportion cut in the depth D 2 of then secondary slot part 57 diminishes, thus make smear metal to be cut apart, the reduction of cutting resistance is insufficient.In addition, do not have under the divided situation in smear metal, because the trough wall surface of smear metal Contact Pair slot part 57, the result causes cutting resistance to increase easily.If the depth D 2 of secondary slot part 57 is 5/6 bigger than the depth D 1 of major trough portion 56, the insufficient strength of then cutting blade, the intensity of insert body also can reduce simultaneously.
And then in this embodiment, the length L 1 of major trough portion 56 and the gauge of insert 1 are roughly the same, but the length L 2 of secondary slot part 57 is shorter than the gauge of this insert 51.According to such structure; Because being positioned at, separates on the flank 54A other end of secondary slot part 57; So compare with merely increasing the situation of number that the other end arrives the major trough portion 56 of bottom surface 52, can suppress the reduction of edge strength, further can suppress the reduction of the intensity of insert body.
Particularly, in this embodiment, the width W 1 of setting major trough portion 56 is 1.6mm, and the depth D 1 of major trough portion 56 is 1.2mm, and the length L 1 of major trough portion 56 is 6.4mm.The width W 2 of setting secondary slot part 57 in addition is 0.6mm, and the depth D 2 of secondary slot part 57 is 0.4mm, and the length L 2 of secondary slot part 57 is 2.4mm.
At this, to for the cutting ability of the insert of investigating this embodiment and the experiment of carrying out explain.Figure 20 A～20D simply representes the shape of the cutting edge of the various inserts that this experiment is used, and is insert 151A, the 151B of insert 51 and the comparative example of the 5th embodiment, each vertical view of 151C.The insert 51 of the 5th embodiment has three major trough portions 56 and four secondary slot parts 57 shown in Figure 20 (B).Relative therewith, the insert 151A of first comparative example has three major trough portions 56 shown in Figure 20 (A).The insert 151B of other second comparative example has seven major trough portions 56 shown in Figure 20 (C).The insert 151C of other the 3rd comparative example has seven secondary slot parts 57 shown in Figure 20 (D).The size insert 51 in the 5th embodiment, the insert 151A of first～the 3rd comparative example, 151B, 151C, major trough portion 56 and secondary slot part 57 is identically formed respectively.
The insert 151A of first comparative example has the separation main cutting edge that roughly is divided into four by three major trough portions 56.In addition, the insert 51 of the 5th embodiment is the insert that on the insert 151A of first comparative example, further forms secondary slot part 57, and the separation main cutting edge of being cut apart by major trough portion 56 further is divided into two parts respectively by each secondary slot part 57.The insert 151B of other second comparative example has the separation main cutting edge of eight equal parts roughly by seven major trough portions 56, and the insert 151C of the 3rd comparative example has by seven secondary slot parts 57 separation main cutting edge of eight equal parts roughly.
[table 1]
First comparative example (standard indentation) The 5th embodiment (w indentation) Second comparative example (many indentations (greatly)) The 3rd comparative example (many indentations (little))
Cutting resistance 3528N 2964N 2540N 3281N
Cutting resistance ratio with respect to first comparative example 100％ 84％ 72％ 93％
Edge strength (limit feed: the mm/ sword) 0.7 0.65 0.35 0.65
Edge strength ratio with respect to first comparative example 100％ 93％ 50％ 93％
Machined surface Big is concavo-convex Concavo-convex few Concavo-convex few Bigger is concavo-convex
And in order to compare the state of cutting resistance, edge strength and the machined surface of each insert respectively, setting cutting speed V is 200m/min, and the SS400 that uses the JIS regulation is carried out DRY CUTTING and tests as cutting material.In addition, the depth of cut of establishing the support axis direction is 15mm, and the depth of cut of support radial direction is 5mm, and when measuring cutting resistance and machined surface, the amount of feeding f that establishes the every sword of insert is the 0.2mm/ sword.Its result is illustrated in the table 1.In addition, under above-mentioned machining condition, measure cutting resistance, count cutting resistance with main component table with the cutting resistance measuring appliance of キ ス ラ one (kisura) corporate system.In addition, improve constantly the amount of feeding and make the load that puts on insert increase gradually, till the final appearance of insert is damaged, make an experiment, produce damaged limit feed table with insert and count edge strength.Particularly, constantly increase the amount of feeding of each sword of insert, represent edge strength with the amount of feeding that the main cutting edge of insert produces when damaged.
Cutting resistance, the total of with the contact-making surface of being cut material, promptly being located at the length of respectively separating main cutting edge of insert with insert increases pro rata.Therefore, each slot part 56,57 is many more, and cutting resistance reduces more.Compare with the insert 151A of first comparative example, the cutting resistance of insert 51 of the 5th embodiment that slot part has just had more the amount that forms secondary slot part 57 is low.In addition, as the insert 151C of the 3rd comparative example, even just increase secondary slot part 57, compare with the situation that increases major trough portion 56, the ratio that cutting resistance reduces is also little.This shows; It not only depends on the long situation of total of the length of respectively separating main cutting edge of being located at insert; Because the depth D and the width W of secondary slot part 57 are little,, therefore can not reduce cutting resistance effectively so the wall of the easy and secondary slot part 57 of cutting residual fraction contacts.In addition, neither forming major trough portion 56, also do not form under the situation of secondary slot part 57, cutting resistance is about 5000N.
In addition, edge strength uprises with the length of separating main cutting edge pro rata, and in other words, along with each separation main cutting edge shortens, edge strength descends.Therefore, compare, increased the edge strength step-down of insert 151B of second comparative example of major trough portion 56 with the insert 151A of first comparative example.To this, the insert 51 of the 5th embodiment through forming the secondary slot part 57 littler than major trough portion 56, is compared with the insert 151B of second comparative example, can suppress its reduction with respect to the edge strength of the insert 151A of first comparative example.
In addition, the depth D 2 of secondary slot part 57 littler than the support depth of cut f of each sword (under the situation of f＞D2), except insert length direction two walls of secondary slot part 57, insert width wall also easily with cut residual fraction and contact.In this case, the contact-making surface of being cut material and insert further increases, and cutting resistance increases with this amount, and the damaged of cutting edge taken place easily.Thus, edge strength reduces.Therefore, the insert 51 of the 5th embodiment, the depth D 2 of its secondary slot part 57 forms bigger than the maximum fmax of the amount of feeding of the anticipation of each sword of insert.Thus, the increase of the cutting resistance that can suppress to be caused by secondary slot part 57 is preventing when edge strength from reducing cutting resistance to be reduced.For example, in this embodiment, the maximum fmax of the amount of feeding of anticipation is set at the 0.3mm/ sword.
In addition, cut the poor of the recess that generates on the machined surface of material and protuberance, receive the bigger influence of cutting resistance at the quilt after the cutting.As stated; The insert 51 of the 5th embodiment; Because cutting resistance is lower than the insert 151A's of first comparative example, so the concavo-convex difference of the machined surface that is formed by the insert 51 of the 5th embodiment can make machined surface more level and smooth than the lacking of the insert 151A of first comparative example.
So, for the heavy cut processing that realizes that machining condition is harsher, compare with the insert 151A of first comparative example; If increase the number of major trough portion 56; Though then cutting resistance reduces, half the because edge strength is reduced to, so be difficult to use in heavy cut processing.In addition, as stated, as the insert 151C of the 3rd comparative example, under the situation that has only disposed a plurality of secondary slot parts 57, though can suppress the reduction of edge strength, the reduction of cutting resistance is insufficient, finally is difficult to use in heavy cut processing.
To this, as the insert 51 of the 5th embodiment,, can reduce cutting resistance on the insert 151A of first comparative example through the secondary slot part 57 littler than major trough portion 56 is set, can suppress the reduction of edge strength simultaneously.Thus, utilize the insert 51 of the 5th embodiment, can carry out the harsh heavy cut processing of machining condition.
And, in aforesaid embodiment, though example shows the form that the other end of secondary slot part 57 does not arrive bottom surface 52; But the invention is not restricted to this; Through to the back angle of flank 54, the thickness of insert body, the width W 2 of secondary slot part 57, the balance of depth D 2, under the situation of the sufficient intensity that can keep the insert body,, the other end of secondary slot part 57 forms even arriving bottom surface 52; Also can obtain same effect, this point is self-explantory.
And then secondary slot part 57 is configured to separate roughly five equilibrium of main cutting edge 55A, the formation second separation main cutting edge 55a with first.Thus, equally disperseed,, can be suppressed the decline of edge strength to greatest extent so cutting resistance reduces because put on the cutting resistance of each second separation main cutting edge 55a.At this; In this embodiment, though showing by secondary slot part 57, example separates the main cutting edge 55A situation with trisection that halves with first, the invention is not restricted to this; Even with first separate that main cutting edge 55A halves, trisection, the quartering; Separate under the situation of main cutting edge 55a and be divided into a plurality of second of length about equally, also can obtain same effect, this point is self-explantory.
According to this embodiment, the first separation main cutting edge 55A by major trough portion 56 is cut apart further is divided into a plurality of second by secondary slot part 57 and separates main cutting edge 55a.The width of the smear metal 8 that generates is because the length of separating main cutting edge 55a with second about equally, so smear metal 8 diminishes and lightweight.Thus, smear metal 8 is discharged from the smear metal bag 13 that forms at support 11 easily, can improve the chip removal performance.Therefore, can suppress the generation of the unfavorable condition such as engaging-in of the obstruction of smear metal 8 in smear metal bag 13, smear metal 8, insert 51 and support 11 can be used for a long time.In addition,,, cut around the material, can be prevented that being cut material is cut to pieces wound by smear metal so move easily and can not be deposited in because it is a light weight from the smear metal 8 that smear metal bag 13 discharges.In addition, cut around the material through preventing that smear metal is deposited in, the result can reduce smear metal engaging-in to cutting edge.So can improve the discharging performance that heavy cut adds the smear metal in man-hour.
In addition; Further cut apart by secondary slot part 57 because first separates main cutting edge 55A; So can reduce the cutting resistance that puts on the main cutting blade, and, so bigger decline of the intensity of the cutting blade that occurs when having suppressed to form major trough portion 56 because secondary slot part 57 is formed forr a short time than major trough portion 56.That is,, can suppress the decline of edge strength, the reduction of the cutting resistance of the minimizing of the contact-making surface that can also realize simultaneously being accompanied by insert 51 and being cut material through major trough portion 56 and secondary slot part 57 are set simultaneously.Therefore, the dither in can suppressing to process can also be used for the harsh heavy cut processing of machining condition.
In addition, in this embodiment, because the width of secondary slot part 57 forms forr a short time than the width of major trough portion 56, so can form different two slot parts 56,57 of width.Through forming the bigger major trough portion 56 of width, can reduce by first and separate the ratio that main cutting edge 55A accounts for insert integral body, can reduce cutting resistance, the dither that produces in the time of can preventing to cut.In addition,, can reach the function that further makes the smear metal sectionalization, can prevent that first separates the intensity reduction of main cutting edge 55A simultaneously through forming the less secondary slot part 57 of width.Thus, it is damaged to prevent that main cutting edge from producing, and prolongs the life-span of insert 51.Through using insert 51, can go for heavy cut processing suppressing to reduce cutting resistance when edge strength descends like this embodiment.
In addition, according to this embodiment, the length of secondary slot part 57 forms shortlyer than the thickness of body.The flank 54A that between two major trough portions 56, forms is divided into a plurality of parts by secondary slot part 57, and divided a plurality of flank 54A link to each other respectively at bottom surface side.Thus, the flank part that can prevent to clip, or partly produce damagedly by the flank that secondary slot part 57 and major trough portion 56 clip, can improve edge strength by two major trough portions 56.
In addition, according to this embodiment, the degree of depth of secondary slot part 57 forms forr a short time than the degree of depth of major trough portion 56.Thus, the rake part that can prevent to be clipped by two major trough portions 56 or partly produced damagedly by the rake that secondary slot part 57 and major trough portion 56 clip can improve edge strength.
In addition,, can not expect that also cutting resistance continues the critical value that reduces, can reduce cutting resistance as much as possible even be set at again further intensification through the degree of depth with major trough portion 56 according to this embodiment.In addition, be set at more than the degree of depth that is equivalent to the maximum amount of feeding, can cut apart the width of smear metal reliably through secondary slot part 57 through the degree of depth with secondary slot part 57.In addition, be set in through the degree of depth below the degree of depth of major trough portion 56, can suppress the reduction of edge strength secondary slot part 57.In addition; Five equilibrium first separates main cutting edge 55A through secondary slot part 57 being configured to roughly; The cutting resistance of each second separation main cutting edge 55a of cutting apart by secondary slot part 57 can be equally disperseed to put on, the reduction of edge strength can be when reducing cutting resistance, suppressed.
In addition, according to this embodiment, through around through hole 16, forming protrusion 15 identically, thereby can promote the bending of smear metal with first embodiment.In addition, hidden by protrusion 15, contact with the head of screw component, thereby can prevent the wearing and tearing of the head of screw component so can prevent smear metal owing to twist the head close in the screw component of through hole 16.
(the 6th embodiment)
In Figure 16～Figure 19, example shows the example of being cut apart the insert 51 that main cutting edge 5 forms by three major trough portions 56, and as the 6th embodiment of the present invention, Figure 21～Figure 23 has represented to cut apart the insert 61 that main cutting 55 forms by four major trough portions 56.Figure 21 is the vertical view of the insert 61 of expression the 6th embodiment of the present invention, and Figure 22 is the side view of the long side of expression insert 61, and Figure 23 is the side view of the short brink of expression insert 61.
The insert 61 of the 6th embodiment has the insert 1 similar structure with first embodiment; Difference is: the insert 61 of the 6th embodiment does not have the projection that on the insert 1 of first embodiment, forms, and has the secondary slot part 57 that on the insert 1 of first embodiment, does not form.In addition, the major trough portion 56 of the insert 61 of the 6th embodiment, corresponding with the slot part 5 that on the insert 1 of first embodiment, forms shown in Figure 1, have identical structure.In addition, the structure of the major trough portion 56 of the insert 61 of the 6th embodiment and secondary slot part 57 is identical with the insert 51 of the 5th embodiment.
The insert 61 of the 6th embodiment is compared with the insert 51 of the 5th embodiment, and it is different that major trough portion 56 and first separates the configuration of main cutting edge 55A.The insert 61 of the 6th embodiment forms four major trough portions 56.Thus, main cutting edge 55 is divided into five first and separates main cutting edge 55A.In addition, secondary slot part 57 is halved each first separation main cutting edge 55A, forms second respectively and separates main cutting edge 55a.Therefore five secondary slot parts 57 have been formed.
The insert 51 of the 5th embodiment and the insert 61 of the 6th embodiment; At the peripheral part of support 11 when Zhou Fangxiang installs side by side; Select the configuration of the major trough portion 56 of each insert 51,61 to make: the field that the major trough portion 56 of the insert 51 of the 5th embodiment passes through is comprised in first the separating in the field that main cutting 55A passes through of insert 61 of the 6th embodiment, and the field passed through of the major trough portion 56 of the insert 61 of the 6th embodiment is comprised in first the separating in the field that main cutting 55A passes through of insert 51 of the 5th embodiment simultaneously.
Figure 24 is the stereogram that the rotary cut instrument 12 of insert 51,61 of the present invention has been installed in expression., be formed with a plurality of smear metal bags 13 at the periphery leading section of support 11 here, each circumferential position in smear metal bag 13 is equipped with insert 51,61.In detail, insert 51,61 is installed into rake 53 and is positioned at most peripheral towards direction of rotation and main cutting edge 55, and main cutting edge 55 is through cutting with support 11 rotations.
Generally speaking, when utilizing such cutting element 12 to carry out cut, 11 effects have bending stress to support, under the effect of such bending stress, produce bigger deflection in order not make support 11, and support 11 possesses certain rigid.But; In the cut of reality, because change, so under the big situation of machining load in the size that acts on the bending stress on the support 11 under the different processing conditions; Can produce very big deflection because the rigidity of support 11 is not enough, the result understands work in-process and brings out dither.Particularly, in the big heavy cut processing of the depth of cut etc., because cutting resistance enlarges markedly, dither takes place easily.
Therefore all the time; In aforesaid rotary cut instrument 12; As the means that are used to reduce cutting resistance, extensive use be that a plurality of inserts of combination use, this insert has been cut apart the flank that contains main cutting edge by the slot part that two ends arrive rake and bottom surface.That is, in such insert,,, suppress the dither in the processing so pass through to reduce cutting resistance because the width of the smear metal that generates is cut apart lessly.But; In order under harsher machining condition, to carry out heavy cut processing; If just merely on number, increase the slot part of shape as before; Because the intensity of the cutting blade of being cut apart by slot part reduces, tipping or damaged etc. takes place easily, so the reduction of cutting resistance is also limited then.
In this embodiment, as stated,, can suppress to cut the decline of blade intensity through forming major trough portion 56 and secondary slot part 57, can reduce cutting resistance.Consequently, even especially in the big heavy cut processing of the depth of cut etc., it is damaged that insert 51,61 does not take place yet, and can suppress dither.
Only used the cut like the insert 51 of the 5th embodiment of Figure 16～shown in Figure 19, because on main cutting edge 55, formed major trough portion 56, must to generate cutting on the wall of material residual so the quilt after the processing is cut.Therefore; Residual in order not generate the cutting that causes by major trough portion 56; The insert 51,61 that the configuration of major trough portion 56 has nothing in common with each other, for example the insert 61 of the insert 51 of the 5th embodiment and the 6th embodiment is shown in figure 24; Cut is carried out in alternately configuration on the same circumference of support 11.Thus, the main cutting edge 55 of the opposing party's insert 61 can cut by the cutting of slot part 56,57 generations of a side insert 51 residual, can reduce and cut concavo-convex processing that generates on the materials processing wall.So under the situation of using two kinds of inserts 51,61, the size between the width of major trough portion 56 and the major trough portion is set to much at one with two kinds of inserts 51,61.Identical ground with the 3rd embodiment, the insert 51,61 of the 5th and the 6th embodiment, the fillet cutting edge advances at the insert length direction from the turning along with separating main cutting edge, can tilt with the mode near the bottom surface.
(the 7th embodiment)
Figure 25 is the overall perspective view of the insert 71 of expression the 7th embodiment of the present invention, and Figure 26 is the amplification stereogram of the insert installment state of expression rotary cut instrument 12 of the present invention.The insert 71 of the 7th embodiment has the structure corresponding with the insert of the 5th embodiment 51, and its explanation of incomplete structure for correspondence indicates the reference marks identical with the 5th embodiment.The insert 71 of the 7th embodiment is except the inscape of insert 51 with above-mentioned the 5th embodiment; Separating on the adjacent rake of main cutting edge 55A 53 with first, be formed with respectively with said each first separate corresponding at least one projection 58 of main cutting edge 55A.Projection 58 is outstanding at thickness direction from rake 53.Particularly, projection 58 and said first is separated main cutting edge 55A and is formed in pairs.The main cutting edge side sections of projection 58, with further cut apart by secondary slot part 57 second to separate main cutting edge 55a corresponding, form branch shape.
In each projection 58, the component that separates in the main cutting edge side sections forms, towards insert width C, along with self-corresponding second separating main cutting edge 55a, the shape that width and the front end that reduces highly gradually attenuate near each.At this, the height of projection 58 is projection 58 height dimensions on insert thickness direction A with respect to rake 53.In addition, the width of projection 58 is sizes on insert length direction B of projection 58.In addition, the distance on insert width C between the second separation main cutting edge 55a and the projection 58 constitutes, and is the shortest at the insert length direction central portion of the second separation main cutting edge 55a.The leading section that is branch towards second separate main cutting edge 55a in the setting of insert length direction central portion.
In this embodiment, second separate the smear metal that main cutting edge 55a forms in a narrow margin and contact by each with the said projection 58 that on rake 53, forms, produce little flexural deformation, can prevent that smear metal from cutting to pieces and hinder the interior support wall 14 of smear metal bag.And then, form each smear metal in a narrow margin, through be formed on rake 53 on projection 58 contact, its radius of curvature diminishes, the size decreases of smear metal.Thus, smear metal can improve the chip removal performance smoothly from the outer side shifting of smear metal bag 13 to support 11.Therefore, can suppress smear metal and in smear metal bag 13, stop up, the unfavorable condition such as engaging-in of smear metal, insert 71 and support 11 can use for a long time.In addition, major trough portion 56 and secondary slot part 57 are installed in 11 last times of support at insert, extend along the plane perpendicular to the support axis, and on the Zhou Fangxiang of support, extend.
Shown in figure 24; The mutual installation forms first and separates the different multiple insert 51,61 of part of main cutting edge 55A and carry out rotary cut and add man-hour on the support 11; Cut on the processing wall of material, exist by the part of the separation main cutting edge 55A cutting of the side's in two insert with by the part that main cutting edge 55A cuts of separating of two sides' insert.At this moment, the central portion in the smear metal cross section of generation is because it is equivalent to only by the part of the separation main cutting edge of a side insert cutting, so thickness is the thickest.Shown in the 7th embodiment; Be installed in each insert 71 on the support 11, owing to have projection 58, so projection 58 contacts with the thickest part in described smear metal cross section; The smear metal that can make generation selectively and flexural deformation efficiently promptly can make it crooked.
The insert 71 of the 7th embodiment has represented on the insert 51 of the 5th embodiment, to have formed the situation of projection 58, but also can form projection 58 equally for the insert 61 of the 6th embodiment.Therefore, preferably form projection in whole being installed on the insert on the support 11.In addition,, can separate on the main cutting edge 55a forming more than one projection, also can form the projection same with the insert of first embodiment or second embodiment 1,21 at each for projection.
In addition, shown in figure 26, around the through hole 16 of the central portion of rake 53, form the protrusion 15 of ring-type.Thus, owing to formed protrusion 15, can obtain the effect same with the insert of first embodiment 1.
Figure 27 is the overall perspective view of insert 71a of the variation of expression the 7th embodiment.The insert 71 of the 7th embodiment; Separating with first on the adjacent rake of main cutting edge 55A 53; Corresponding to said each first separate main cutting edge 55A and form the projection of at least one, it is corresponding that projection and second is separated main cutting edge 55a, form main cutting edge side branch shape.
Relative therewith, shown in figure 27, the insert 71a of variation has respectively and separates the corresponding independently a plurality of projections 68 of main cutting edge 55a with second.Insert 71a with such projection 68 also can obtain the effect same with the insert of the 7th embodiment 71.That is, projection be configured to separate by corresponding each second smear metal that main cutting edge 55a generates collide and make it to produce crooked, thereby no matter the shape of the rake center side of projection how, can obtain same effect.The projection that this projection 68 is preferably corresponding with projection shown in the insert 1 of first embodiment 6.The projection 6 of first embodiment, though towards separating the main cutting edge configuration, the projection 68 of the insert 71a of the variation of the 7th embodiment is separated main cutting edge 55a configuration towards second.For other characteristic of projection 68, can form the structure same with the insert of first embodiment 1.Thus, owing to formed projection 68, so can obtain the effect same with the insert of first embodiment 1.
In addition; In Fig. 1～Figure 27, example shows the example that body is the tabular or insert that the almost parallel quadrangle is tabular of rectangle roughly, as other embodiment of the present invention; Corresponding to the support shape; Roughly polygonal is tabular and roughly discoideus even body forms, and also can obtain same effect, and this is self-explantory.More than, though example shows embodiment of the present invention, the present invention is not limited to these embodiments, only otherwise depart from the purpose of invention, can be any way, this is self-explantory.For example, in this embodiment, insert is 180 degree rotation symmetric shapes, also can be only at width one side's of insert edge formation main cutting edge.In addition, inclination, the shape of slot part and the shape of projection or the like of separating main cutting edge can suitable choice, and are not limited to the structure of each embodiment of the present invention.In addition, also can this embodiment appropriate combination be used.In addition, insert of the present invention also can be used for the processing beyond the heavy cut processing.
The present invention can implement with other various forms under the situation that does not depart from its spirit or principal character.Therefore, said embodiment is seen only some examples from every side, and scope of the present invention is the represented contents of claims, does not receive any constraint of specification text.Further, belong to claims distortion and the change all within the scope of the invention.
Industrial applicibility
According to the present invention of technical scheme 1 record, form in a narrow margin smear metal and projections contact through separating main cutting edge by each, occur bending and deformation, radius of curvature diminishes.Because the radius of curvature of smear metal diminishes, smear metal was ruptured before touching the support wall that is formed on the support, and to the external moving of smear metal bag.Thus, can prevent smear metal bump support wall and make the support wall damage.And then, smear metal and projections contact, its radius of curvature diminishes, thus the size decreases that makes smear metal.Thus, smear metal can be moving to the slippage of support outer circle from the smear metal bag, can improve the chip removal performance.Therefore, can suppress smear metal and in the smear metal bag, stop up, the unfavorable condition such as engaging-in of smear metal, insert and support can use for a long time.
According to the present invention of technical scheme 2 records, along with leaving from separating main cutting edge, the height of protrusion distance rake uprises.Therefore, smear metal, is occured bending and deformation to the direction of leaving rake by protrusion directs, radius of curvature diminishes.In the present invention, because along with the approaching main cutting edge that separates, the height of projection reduces gradually, smear metal contacts with projection reposefully, and the impact in the time of can suppressing to contact can suppress the increase of cutting resistance.
According to the present invention of technical scheme 3 records, along with leaving from separating main cutting edge, it is big that the width of projection becomes.So, intensity big, that make projection improves because the width of projection becomes, can prevent when smear metal clash into projection generation from the insert body come off damaged.Thus, insert can use for a long time.
According to the present invention of technical scheme 4 records, smear metal is moved along rake, away from separating main cutting edge, smear metal and projections contact.Smear metal is directed on thickness direction to the direction away from rake, and radius of curvature diminishes and flexural deformation.In the present invention, the shape that the main cutting edge side sections of said projection forms is, along with near each corresponding separation main cutting edge, the shape that its width and the front end that reduces highly gradually attenuate.Therefore, along with leaving from separating main cutting edge, the height of protrusion distance rake uprises.In this case, contacting of smear metal and projection becomes steadily, and in other words, the impact during the smear metal contact protrusion diminishes, and the impact in the time of can suppressing to contact suppresses the increase of cutting resistance.In addition, projection is when highly uprising, and its width also broadens, thereby can prevent the reduction of projection intensity, can prevent that projection from the damage that projection comes off from the insert body taking place when directs chips makes its flexural deformation.Thus, insert can use for a long time.
According to the present invention of technical scheme 5 record, the intersection crest line portion of projection, along with away from separating main cutting edge, the distance on thickness direction between itself and the rake, promptly the height of projection becomes big.The intersection crest line portion of smear metal impact tab, smear metal is moved and flexural deformation along the intersection crest line portion of projection.So; Through formation intersection crest line portion on projection, the intersection crest line portion of smear metal impact tab, thus can make the contact portion of smear metal and projection become minimum; Can make moving of smear metal more level and smooth, can further reduce owing to the cutting resistance that smear metal flexural deformation is caused.In addition, in order to reduce cutting resistance, the intersection crest line portion of projection preferably extends along the vertical bisecting line of the corresponding separation main cutting edge of projection, along with near separating main cutting edge, reducing highly gradually.
According to the present invention of technical scheme 6 record, smear metal is roughly being moved on the direction of quadrature with respect to separating main cutting edge.In the present invention, because projection is roughly extending configuration on the direction of quadrature with respect to separating main cutting edge, so for the smear metal of on rake, moving, the cutting resistance in the time of can reducing the cutting that is caused by projection.
According to the present invention of technical scheme 7 records, projection is towards the length direction mid portion configuration that separates main cutting edge.By separating the smear metal that main cutting edge forms, form the width roughly the same with separating main cutting edge.In this case, projection contacts with the width middle body of smear metal.Thus, projection can prevent vacillating now to the left, now to the right of smear metal, with respect to separating roughly smear metal guiding on the direction of quadrature of main cutting edge.
According to the present invention of technical scheme 8 records, said projection is configured on the approximate vertical bisecting line of separating main cutting edge.Thus, projection is along with respect to separating the roughly direction configuration of quadrature of main cutting edge, and towards the length direction mid portion configuration that separates main cutting edge.Thus, for respect to separating the smear metal that main cutting edge roughly moves on the direction of quadrature, the cutting resistance in the time of can reducing the cutting that causes by projection.In addition, because projection contacts with the width middle body of smear metal,, smear metal is roughly being moved on the direction of quadrature with respect to separating main cutting edge so can prevent vacillating now to the left, now to the right of smear metal.
According to the present invention of technical scheme 9 records, through around through hole, forming protrusion, even under the flexural deformation effect inadequate condition of projection,, also can promote the flexural deformation of smear metal through contacting of smear metal and protrusion for smear metal.In addition; Because twisting the head close in the screw component of through hole is hidden in the protrusion; Contact so can prevent the head of screw of smear metal and screw component, can prevent the wearing and tearing of the head of screw component, can prevent that head of screw from bringing harmful effect to the discharge of smear metal simultaneously.
According to the present invention of technical scheme 10 records, projection is separated main cutting edge and is formed in pairs with each.That is, separate main cutting edge and form a projection respectively for each.In the present invention, only produce bump and be directed, thereby take place to clash into smear metal and a plurality of projections and situation about being directed is compared, can further reduce cutting resistance with a projection by separating smear metal that main cutting edge forms.In addition, even projection is worn and torn by smear metal, the generation direction of smear metal produces some and departs from, and smear metal is partly contacted with the crest line of a projection of correspondence.
According to the present invention of technical scheme 11 record, by the smear metal that forms near the separation main cutting edge beyond the separation main cutting edge of turning fillet cutting edge, respectively with to separate main cutting edge roughly mobile on the direction of quadrature.In the present invention; With near separating each paired projection of main cutting edge beyond the main cutting edge separating of turning fillet cutting edge; Through respectively along with separate the roughly direction configuration of quadrature of main cutting edge; For with respect to separating the smear metal that main cutting edge roughly moves respectively on the direction of quadrature, can reduce the cutting resistance that causes by projection.In addition; For example each projection is towards the paired length direction pars intermedia configuration that separates main cutting edge of each and its; Thereby can prevent vacillating now to the left, now to the right of smear metal; Smear metal is moved on respect to the direction of the roughly quadrature that separates main cutting edge, can prevent that a plurality of smear metals from contacting with each other, can prevent the obstruction of smear metal in the smear metal bag.
The present invention according to technical scheme 12 records; Separation main cutting edge near the bight of rake; Because it links to each other with turning fillet cutting edge; So by the smear metal that the separation main cutting edge near turning fillet cutting edge forms, form link to each other with the smear metal that forms by turning fillet cutting edge circular-arc, on rake, tilt to move with predefined angle with respect to separating main cutting edge.In the present invention; Because become with the paired protrusion-shaped of main cutting edge of separating near turning fillet cutting edge; Its width of fillet cutting edge and reducing highly gradually towards the turning; So can make by turning fillet cutting edge and coupled smear metal that main cutting edge the forms impact relief reposefully of separating, can reduce cutting resistance.In addition, can make by turning fillet cutting edge and the coupled smear metal flexural deformation sleekly that main cutting edge forms that separates.
The present invention according to technical scheme 13 records; With separate the paired projection of main cutting edge near turning fillet cutting edge; Through being that imaginary line more than 60 °, below 85 ° extends configuration with said the angle of inclination that main cutting edge is of separating near the bight along it; Thereby can reduce the cutting resistance that causes by projection, can make the smear metal flexural deformation more reliably that forms by turning fillet cutting edge simultaneously.For example, if said angle of inclination less than 60 °, then smear metal clogs easily, the misgivings that exist cutting resistance to increase.In addition, if the angle of inclination less than 60 °, is understood excessive by the cutting resistance that the smear metal that separating of linking to each other with turning fillet cutting edge, main cutting edge formed partly causes.In addition, if the angle of inclination surpasses 85 °, then because smear metal is difficult to bending; Not only the wearing and tearing of support wall can not get improving; The size of smear metal also becomes greatly, and the chip removal performance descends, and also can produce the unfavorable condition such as damaged owing to the engaging-in cutting edge that causes of smear metal.In addition, if the inclination angle surpasses 85 °, the cutting resistance that the smear metal that is then formed by turning fillet cutting edge partly causes can be excessive.
To this, in the present invention because the angle of inclination is set at more than 60 °, below 85 °, above-mentioned unfavorable condition can not take place.Therefore, can suppress cutting resistance, can make by turning fillet cutting edge and the smear metal flexural deformation more reliably that main cutting edge forms that separates that links to each other with turning fillet cutting edge.
According to the present invention of technical scheme 14 records, form more than one projection corresponding to separating main cutting edge.Therefore, can make smear metal be connected to one or more projections, can make smear metal flexural deformation.Through making smear metal be connected to a plurality of projections; Make smear metal flexural deformation, even under the high situation of the sectional area of smear metal rigidity big and smear metal, also can share the impulsive force that comes from smear metal by a plurality of projections; The damaged of projection can be prevented, smear metal flexural deformation fully can be made.For example in a plurality of separation main cutting edges; Under the situation of the separation main cutting edge that separation main cutting edge that the length of existence separation main cutting edge is grown and the length of separating main cutting edge are short; Compare with the projection number of separating main cutting edge of lacking corresponding to length; Through increasing number corresponding to the projection of the long separation main cutting edge of length; Can make smear metal flexural deformation more reliably, can prevent simultaneously under the impact of wide cut smear metal, to take place damaged corresponding to the projection of the long separation main cutting edge of length by the long formed wide cut of separation main cutting edge of length.
According to the present invention of technical scheme 15 record, by near the formed smear metal of separation main cutting edge beyond the separation main cutting edge of turning fillet cutting edge, roughly moving on the direction of quadrature with each self-corresponding main cutting edge that separates.In the present invention; With near separating each corresponding projection of main cutting edge beyond the main cutting edge separating of turning fillet cutting edge; Through with separate main cutting edge and roughly extend configuration respectively on the direction of quadrature; Thereby, can reduce the cutting resistance that causes by projection for for separating the smear metal that main cutting edge roughly moves on the direction of quadrature.In addition; For example through the length direction pars intermedia of each projection towards corresponding respectively separation main cutting edge disposed; Thereby prevent vacillating now to the left, now to the right of smear metal; Can make smear metal roughly moving on the direction of quadrature, can prevent being in contact with one another between a plurality of smear metals, prevent the obstruction of smear metal in the smear metal bag with respect to separating main cutting edge.
The present invention according to technical scheme 16 records; Separation main cutting edge near turning fillet cutting edge; Because it links to each other with turning fillet cutting edge; So by the smear metal that the separation main cutting edge near turning fillet cutting edge forms, form link to each other with the smear metal that forms by turning fillet cutting edge circular-arc, on rake, tilt to move with predefined angle with respect to separating main cutting edge.In the present invention; With separating in the corresponding projection of main cutting edge near turning fillet cutting edge; Because the protrusion-shaped near turning fillet cutting edge setting becomes; The fillet cutting edge towards the turning and its width and reduce highly gradually separate smear metal that main cutting edge forms and impact the projection that is provided with near turning fillet cutting edge sleekly with coupled so can make by turning fillet cutting edge, can further reduce cutting resistance.In addition, for separating the formed smear metal of main cutting edge with coupled, can make its circle flexural deformation quietly by turning fillet cutting edge.At this, be that this projection becomes the projection that is provided with near turning fillet cutting edge under one the situation with the corresponding projection of main cutting edge of separating near turning fillet cutting edge.In addition, be under a plurality of situation with the corresponding projection of main cutting edge of separating near turning fillet cutting edge, become the projection that is provided with near turning fillet cutting edge with the turning immediate projection of fillet cutting edge in these a plurality of projections.
The present invention according to technical scheme 17 records; The projection that is provided with near turning fillet cutting edge; Through along being that imaginary line more than 60 °, below 85 ° extends configuration with said the angle of inclination that main cutting edge is of separating near the bight; Thereby can reduce the cutting resistance that causes by projection, and can make the smear metal flexural deformation more reliably that forms by turning fillet cutting edge.For example, if said angle of inclination less than 60 °, then smear metal clogs easily, the misgivings that exist cutting resistance to increase.In addition, if the angle of inclination less than 60 °, is understood excessive by the cutting resistance that the smear metal that separating of linking to each other with turning fillet cutting edge, main cutting edge formed partly causes.In addition, if the angle of inclination surpasses 85 °, then because smear metal is difficult to flexural deformation; Not only the wearing and tearing of support wall can not get improving; The size of smear metal also becomes greatly, and the chip removal performance descends, and also can produce the unfavorable condition such as damaged owing to the engaging-in cutting edge that causes of smear metal.In addition, if the inclination angle surpasses 85 °, the cutting resistance that the smear metal that is then formed by turning fillet cutting edge partly causes can be excessive.In the present invention because the angle of inclination is set at more than 60 °, below 85 °, above-mentioned unfavorable condition can not take place, and can make the smear metal flexural deformation more reliably that is formed by turning fillet cutting edge.
According to the present invention of technical scheme 18 record, by the smear metal that forms near the separation main cutting edge beyond the separation main cutting edge of turning fillet cutting edge, respectively with corresponding to separate main cutting edge roughly mobile on the direction of quadrature.In the present invention; With separating in the corresponding a plurality of projections of main cutting edge near turning fillet cutting edge; With the projection beyond the immediate projection of turning fillet cutting edge; Through roughly extending configuration on the direction of quadrature, being connected to projection reposefully, can reduce the cutting resistance that causes by projection respectively with respect to separating the smear metal that main cutting edge roughly moves on the direction of quadrature with the said main cutting edge that separates.
According to the present invention of technical scheme 19 records, the said first separation main cutting edge that is partly cut by major trough is divided into a plurality of second separation main cutting edges further by said secondary slot part.Because the width of the smear metal that generates, corresponding to said second separate main cutting edge length further diminish, so smear metal is very light.Therefore, smear metal in discharging from the smear metal bag that forms at support, can improve the chip removal performance easily.Therefore, suppressed the unfavorable condition such as engaging-in of obstruction, the smear metal of smear metal in the smear metal bag, insert and support can be used for a long time.In addition, the smear metal that discharges from the smear metal bag because it is a light weight, can be deposited in so move easily and be cut around the material, can prevent that being cut material is cut to pieces wound by smear metal.
In addition; Further cut apart by said secondary slot part because said first separates main cutting edge; So can reduce the cutting resistance that puts on the main cutting blade; And secondary slot part, through forming forr a short time than major trough portion, thus the bigger decline of the intensity of the cutting blade that occurs can suppress to form said major trough portion the time.That is, through said major trough portion and said secondary slot part are set simultaneously, can be when suppressing edge strength and descending, the reduction of cutting resistance of minimizing that can also realize being accompanied by insert and cut the contact-making surface of material.Therefore, the dither in can suppressing to process improves the chip removal performance, and can be used for the harsh heavy cut processing of machining condition.
According to the present invention of technical scheme 20 records, because the width of secondary slot part forms forr a short time than the width of major trough portion, so can form two different slot parts of width.Through forming the bigger major trough portion of width, can reduce by first and separate the ratio that main cutting edge accounts for insert integral body, can reduce cutting resistance, the dither that produces in the time of can preventing to cut.In addition, through forming the less secondary slot part of width, avoid reducing significantly and the tipping of consequent cutting edge, damaged, breakage etc. of common on the insert that forms the big major trough portion of a plurality of width, edge strength.Therefore, can reach the function of further segmentation smear metal, can prevent that first separates the intensity reduction of main cutting edge simultaneously.Thus, it is damaged to prevent that main cutting edge from producing, and can prolong the life-span of insert.Through using as insert of the present invention, can improve the chip removal performance, and go for heavy cut processing suppressing cutting resistance when edge strength reduces.
According to the present invention of technical scheme 21 records, the length of secondary slot part forms shortlyer than the thickness of body.The flank that between two major trough portions, forms is slit into a plurality of parts by secondary slot part, and divided a plurality of flanks link to each other respectively at bottom surface side.Thus, can prevent to be clipped in two between the major trough portion the flanks part, or be clipped in flank between secondary slot part and the major trough portion and partly produce damagedly, can improve edge strength.
According to the present invention of technical scheme 22 record, the degree of depth of secondary slot part forms than the depth as shallow of major trough portion.Thus, can make and keep edge strength the two obtains balance and takes into account simultaneously with reducing cutting resistance, consequently, because the heavy cut processing that the depth of cut can also be used to cut the time increases, so be preferred.Thus, can prevent to be clipped in two between the major trough portion the rakes part, or be clipped in rake between secondary slot part and the major trough portion and partly produce damagedly, can improve edge strength.
The present invention according to technical scheme 23 records; Five equilibrium first separates main cutting edge through secondary slot part being configured to roughly; Thereby the machining load that puts on each second separation main cutting edge of being cut apart by secondary slot part can equally be disperseed, and can when reducing cutting resistance, suppress the decline of edge strength.
According to the present invention of technical scheme 24 record, second separate the smear metal in a narrow margin that main cutting edge forms and contact by each with the said projection that on rake, forms, the flexural deformation of less ground can prevent that smear metal from cutting to pieces and hinder the interior support wall of smear metal bag.And then, each smear metal in a narrow margin of formation, through with the projections contact that is formed on the rake, its radius of curvature diminishes, the size decreases of smear metal.Thus, smear metal can be moved to the outside of support from the smear metal bag smoothly, can improve the chip removal performance.Therefore, can suppress the obstruction of the smear metal in the smear metal bag, the unfavorable condition such as engaging-in of smear metal, throw-away insert and support can use for a long time.
According to the present invention of technical scheme 25 record, through around through hole, forming protrusion, even projection for the inadequate condition of the flecition of smear metal under, also can promote the bending of smear metal.In addition, be hidden in the protrusion, can prevent that smear metal from contacting with screw head, can prevent the wearing and tearing of screw head because twist the head close in the screw of through hole.
According to the present invention of technical scheme 26 record,, throw-away insert can realize having the rotary cut instrument of the axial rake of positive direction on support through being installed.Thus, can further improve, can reduce from the cutting resistance of being cut material to being cut the tack of material.Therefore, even carry out the bigger heavy cut processing of the cutting output of cutting at one time, promptly so-called roughing also can suppress the increase of cutting resistance, the dither in can suppressing more reliably to process.
In addition; In the present invention; Owing to respectively separate main cutting edge and tilt through making, and form axial rake, tilt significantly on respect to the Zhou Fangxiang of rotation at support of support so there is no need to make in the insert bottom surface that forms on the support with respect to the bottom surface of insert.Thus, suppress the minimizing of the wall thickness of support, can suppress the reduction of support rigidity, prolonged the life-span of rotary cut instrument, can increase the cutting output that once can cut.
According to the present invention of technical scheme 27 records, as stated, can the throw-away insert that cuts be segmented in smear metal through installation on support is a plurality of, can improve the discharging performance of smear metal.Particularly, even carry out the very big heavy cut processing of cutting output in cutting process once, the smear metal that produces in the time of also can be with cutting is discharged to the outside of support from the smear metal bag smoothly, can prevent that smear metal from piling up in the smear metal bag.Thus, reduced the damaged of insert and support and wearing and tearing, in life-saving, can reduce the number of times of replacing, can enhance productivity.

Claims (2)

1. throw-away insert; It is roughly tabular; On thickness direction one side's face, have rake, have flank, and form main cutting edge in the intersection crest line portion of said rake and said flank in the side; And said main cutting edge is made up of a plurality of separation main cutting edges that separate, and this throw-away insert is characterised in that:
With the said corresponding position of main cutting edge of respectively separating, be formed with respectively more than one from the outstanding projection of said rake,
A bight at said rake; Formation and the turning fillet cutting edge that main cutting edge links to each other that separates near the bight near this bight; Corresponding to said near turning fillet cutting edge the separation main cutting edge and be provided with projection; In this corresponding projection, the protrusion-shaped that approaches the configuration of said turning fillet cutting edge most becomes: towards said turning fillet cutting edge and width and reducing highly gradually
Approach most the projection of said turning fillet cutting edge configuration, along being that imaginary line more than 60 °, below 85 ° extends configuration with the main cutting edge angulation that separates near said bight.
2. throw-away insert as claimed in claim 1 is characterized in that:
A bight at said rake; Formation and the turning fillet cutting edge that main cutting edge links to each other that separates near the bight near this bight; Corresponding near the separation main cutting edge of said turning fillet cutting edge and be provided with a plurality of projections; In these a plurality of projections, approach the projection beyond the projection of said turning fillet cutting edge configuration most, roughly extending configuration on the direction of quadrature with the said main cutting edge that separates.
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CN101513679A (en) 2009-08-26
CN101513680B (en) 2011-07-27
CN101031378A (en) 2007-09-05
CN101031378B (en) 2010-05-26

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