CN1204975A - Metal cutting tool and replaceable shim therefor - Google Patents
Metal cutting tool and replaceable shim therefor Download PDFInfo
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- CN1204975A CN1204975A CN 97191360 CN97191360A CN1204975A CN 1204975 A CN1204975 A CN 1204975A CN 97191360 CN97191360 CN 97191360 CN 97191360 A CN97191360 A CN 97191360A CN 1204975 A CN1204975 A CN 1204975A
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- mentioned
- rib
- dimple
- pad
- replaceable
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Abstract
A metal cutting tool comprises a tool chuck on which at least a blade holding recess and a replaceable shim formed by compressing and sintering powder are arranged, wherein the shim has a long rib which is formed along the shim's edges, comes into a whole with the shim, and is positioned detachably inside the long flute formed along an edge of said recess.
Description
Invention field
The present invention relates to a kind of metal-cutting machine tool, it comprises that one has one or more blades and holds and receive the cutter holder of dimple, and each dimple all provides a replaceable shim.
Background of invention
For a kind of like this cutting element, that or each cutting tip are by means of for example pinching screw, or by means of other suitable clamping system, be clamped in the corresponding dimple that forms on the cutter holder with removable form, screw passes a centre bore on the blade, is screwed in the suitable screwed hole that forms on the cutter holder.Being arranged on pad between the bottom surface of blade and cutter holder dimple plays the comparatively expensive holder body of protection and in use avoids the effect of being out of shape or damaging.Pad can adopt has different-thickness, thereby changes cutting tip and the particularly cutting blade ad-hoc location with respect to cutter holder as required.In general, for the pad that blade adopted that is screwed, pad is on the throne by the used same screw clamping of fixed blade, and screw passes a hole of aiming at the hole of blade on the pad.Can feel significantly that this is inconvenient with spacers to the method on the cutter holder, particularly in changing the process of blade, pad no longer is fixed on the cutter holder, when operating personnel forget when relaying Upper gasket, it or lost or passed into silence.Existing suggestion (seeing European patent document EP247,011), in this case, even can have internal thread and externally threaded special sleeve also is held in place pad pulling down blade after by providing one, still this structure not only complexity but also costliness.
In order to overcome this difficult problem, even blade guarantees that still pad is fixed on the cutter holder effectively when controlling with other device beyond the central screw, existing suggestion (is seen European patent document EP161,505) pad is controlled on the throne with respect to cutter holder with the form of the dismantled and assembled state that is totally independent of blade, and this is to insert cutter holder and pad is controlled the tubular opening that is positioned at the center on the throne sell out by one.But find that in actual applications this alignment pin in use fractures through regular meeting, and this itself can make also the use of cutting element unpredictable result occur.In addition, holding shim is like this met difficulty through regular meeting when pulling down pad and change, and that this replacing also becomes is time-consuming.
In U.S. Patent No. 5,129, suggestion provides an open tubular coupling part integrant with it for the base pad in 767, and it has spring pressure, and is inserted in the corresponding tubular recess of formation in the dimple.In case insert, the coupling part spreading is pressed against on the wall of groove, guarantee effectively and the independently location of pad in dimple.
But for the base pad that existing United States Patent (USP) is advised, in general most of, even be not whole, prior art base pad is all made with cast steel, therefore must be through a large amount of metal cutting operations after heat treatment, for example boring and grinding is so that it can be suitable for using.As a result, this pad is not easy to produce in enormous quantities.
An object of the present invention is to provide a kind of new improved metal-cutting machine tool and the used blade base pad that has overcome above-mentioned shortcoming substantially thereof.
Brief summary of the invention
According to the present invention, a kind of cutting element is provided, it comprises a cutter holder; Holding of constituting on above-mentioned cutter holder is received the location or is kept dimple; The bottom surface of above-mentioned dimple and sidewall; At the cylindrical groove that the land of the bottom surface of above-mentioned dimple and sidewall forms, expand jointly with above-mentioned dimple, and by having lateral dimension D
1Narrow orifice be open in the above-mentioned dimple, and have the cross section that is circular arc substantially, its diameter is d
1, and d
1＞D
1, and right angle greater than 180 °; With a replaceable shim compressed with metal dust and sintering is made, and comprise a plate-like body part, it has end face, bottom surface and sidewall; One rib-shaped piece, one of itself and above-mentioned sidewall constitute one and are projected into outside the above-mentioned bottom surface of aforementioned body part, the outer surface of above-mentioned rib-shaped piece, along the length direction of the above-mentioned rib mutual horizontal opposed part of the above-mentioned outer surface of symmetric arrangement substantially, be in angle is at least 180 ° diameter d
2Positive cylindrical envelope face on, above-mentioned rib extends axially part in addition, it and has lateral dimension D between above-mentioned horizontal opposed part
2, and D
1〉=D
2＜d
2, and d
2Be a bit larger tham d
1Make when the bottom surface of above-mentioned pad with respect to the bottom surface of above-mentioned dimple at an angle the time, above-mentioned rib can freely be inserted in the above-mentioned groove, and above-mentioned pad rotates with respect to above-mentioned groove pivot, what make above-mentioned rib is that above-mentioned opposed circumferential surface part is tight friction with the wall of above-mentioned groove and contacts at least, thereby guarantee that above-mentioned pad fixes on the thronely in above-mentioned dimple, the bottom surface of pad and dimple is closely connected.
Above-mentioned opposed part preferably constitutes by cylindric of axial orientation, and this can extend along the whole length of rib, also can extend along its central segment or termination section.This or each axially extended part can be formed on the rib between the axially extended surface that is the plane substantially, and they can be vertical mutually between every pair.These plane surfaces can be in substantially parallel relationship to those end faces with main part in concordant substantially.
Because according to the advantage on the gasket shape of the present invention, it can be made by the PM technique that comprises compression and sintering, its manufactured goods are much harder than the cast steel pad of producing in the past.Moreover this product can be produced in a large number with lower cost, only needs around grinding upper surface and the polishing.Moreover being positioning clamping rib that one constitutes can be easily and freely insert on the blade clamping dimple in the cylindrical groove with its corresponding formation.This rib carries out simple pivot with respect to groove and rotates can make its mounting board that rubs in groove, and makes pad obtain the rather good location of effect in the dimple holding to receive, and the bottom surface of pad and dimple is closely and connects simultaneously.
Brief description of drawings
In order to understand the present invention better, and represent how it uses in practice, sees also accompanying drawing now, wherein:
Fig. 1 is a part of ratio view of apparatus of milling cutter, and it constitutes the part according to cutting element of the present invention, and cutting tip is settled on the throne on replaceable shim among the figure;
Fig. 2 is the parts explosion that the ratio of expression cutting element details shown in Figure 1 is amplified;
Fig. 3 a is the top perspective view according to replaceable shim of the present invention;
Fig. 3 b is the stereogram of bottom view according to replaceable shim of the present invention;
Fig. 3 c is the lateral elevational view of blade base pad shown in Fig. 3 a and the 3b;
Fig. 4 is the schematic side front view of the blade clamping dimple of cutter holder, the relative size relation of expression groove;
Fig. 5 is that holding of cutter holder received the stereogram of dimple;
Fig. 6 is the stereogram of the replaceable shim shown in the related Fig. 3 a of tools section, 3b and the 3c, and the location rib-shaped piece shown in it is to be inserted on the dimple that is formed at milling cutter shown in Figure 1 in the corresponding groove;
Fig. 7 is the lateral elevational view of tools section shown in Figure 6, the cooperatively interact relative size relation of part of expression positioning rib and groove;
Fig. 8 is the front view that replaceable shim is positioned at and is clamped in the cutter holder dimple;
Fig. 9 a and 9b are the stereograms that the improved form of replaceable shim according to the present invention is seen from upper and lower two directions respectively; And
Figure 10 is the schematic side front view of replaceable shim according to the present invention through improved form.
DETAILED DESCRIPTION OF THE PREFERRED
Referring now to Fig. 1 and Fig. 2,, provided the situation that the present invention is applied to cutting element among the figure, the form of cutting element is the milling cutter 1 of basic standard, and it has a plurality of recesses 2 along circumference, each recess all forms a blade clamping dimple 3 therein, and is shown in Figure 3 clearer.Each dimple 3 is made of pair of sidewalls 4 and 5 and bottom surfaces 6.Be formed with a cylindric long recess 7 in the junction of sidewall 5 and bottom surface 6, and this groove is open into dimple 3 by a slotted opening 8, if slotted opening 8 is that the closing line of sidewall 5 and bottom surface 6 is not equidirectional when having it.Screw 9 extends within the bottom surface 6 from the center.
A blade base pad 11 made from metal dust (for example hard metal carbide powder) compacting and sintering is made of the rectangular plate-like body part 12 of a cardinal principle, and this main part has one to be planar upper surface 13, a bottom surface 14 and around side surface 15 on every side.The size cardinal principle of bottom surface 14 is consistent with the bottom surface 6 of dimple 3.A through hole 12a is arranged on the main part 12.What constitute one with the side surface 15 of main part 12 is rib shape keeper 16, and it and the side surface that is one with it are expanded jointly.
Consult Fig. 3 to Fig. 8 now, to blade base pad 11 according to the present invention, and insertion in dimple 3 and fixing on the throne being described in detail.
As seen from the figure, rib-shaped piece 16 has an outer surface, and it has the cross section of the circular arc of being roughly, and by Fig. 3 c and Fig. 7 as seen, diameter d is arranged
2, its right angle greater than 180 °.This rib-shaped piece 16 has one to be planar upper surface, and as shown in the figure, it is preferably concordant with the plane upper surface 13 of base pad 11 main parts 12.This rib-shaped piece 16 is projected into outside the lower surface 14 of main part 12, have be positioned at bottom, the surface 18 of straight, axial orientation substantially, this surface is parallel with 14 cardinal principles with bottom surface 13 with the end face of upper surface 17 and main part 12.Standoff distance is D between the flat surface 17 and 18
2
By Fig. 3 a, 3b and 3c as seen, be cylindric part 19 and 20 in the both sides of flat surface 18, and upper surface 17 merge with cylindric part 21. Bar part 19,20 and 21 is positioned at the diameter d with axle 23
2Positive cylindrical envelope face on. Cylindric part 21 and 20 has straight portion 22 spaced apart.
By among Fig. 3 b and Fig. 4 as seen, there is a pair of abutment surface 25 bottom surface 14 of gasket body part 12 in its outermost bight.
Referring now to Fig. 4 and Fig. 5,, cylindric long recess 7 is described in detail, it is formed on, and not have it will be the intersection of sidewall 5 and bottom surface 6.It is the shape of cross section of circular arc substantially that this cylindrical groove has, and greater than 180 °, diameter is d to angle in institute
1The cylindrical groove 7 that forms on cutter holder opens wide towards dimple by the slotted opening 8 with its common expansion.Narrow orifice 8 lateral dimensions are D
1, and d
1〉=D
1
As seen from Figure 7, the plane surface part 17 of rib- shaped piece 16 and 18 space D
2Must must not be greater than the lateral dimension D of narrow orifice 8
1The diameter d of cylindric part 19,20 and 21 residing positive cylindrical envelope faces
2Slightly greater than the diameter d of groove
1
As shown in Figure 6 and Figure 7, if now the direction of pad 11 is a sharp angle with respect to the bottom surface 6 of dimple 3, then rib-shaped piece 16 can easily insert groove 7, because its minimum lateral dimension D
2Be not more than the horizontal spacing D of narrow orifice
1
When being in Fig. 6 and position shown in Figure 7, if pad 11 rotates with respect to groove 7 counterclockwise pivots now, turn to the bottom 6 of dimple 3, then bar part 19,20 and 21 slips into cylindrical groove 7 and is tight friction with its inner surface and contacts, the bottom surface 14 of therefore working as the main part 12 of pad 11 reaches its final position, when the bottom surface 6 that promptly connects face 25 and dimple 3 closely connects, then rib-shaped piece 16 is securely held in groove 7, the result, whole pad 11 is fixed on the throne in dimple 3, as shown in Figure 8.
When this position, cutting tip 26 can be placed on the pad 11, and can be by lock-screw 27 being passed blade and pad are fastened in the dimple and screw thread is fixed on the cutter holder.
In actual applications, the rib-shaped piece in the groove connect the zone towards the main cutting force zone of action, simultaneously, guarantee that it is to be in the rational tolerance class that pad stably is seated in the dimple.
Remove the not influence of the 26 pairs of location of pad 11 in dimple 3 of blade, and when wanting when dimple 3 takes off pad 11, the bottom surface 6 that can make pad 11 leave dimple 3 clockwise rotates, and until the planar section 17 of rib 14 and the edge of 18 aligning narrow orifices 8, rib-shaped piece 16 can be extracted out in groove 7.
Although rib-shaped piece 16 is along its whole length in the embodiment that just has been illustrated, promptly on the cylindric knee part 19,20 and 21 of extending, has uniform lateral dimension along rib-shaped piece 16 whole length, but in the embodiment shown in Figure 10 a and the 10b, formed cylindric part 32,33 and 34 is spaced by straight substantially part 35 and 36 on the rib-shaped piece 30.Each bar part 32,22 and 34 all is positioned on the central segment 37, and this central segment is on the cylindrical envelope face of diameter d 2, and the termination section 38 of each bar part 32,33 and 34 is on the less cylindrical envelope face of diameter.The putting into of rib-shaped piece 30, clamp and fixing on the throne all with combine the described similar mode of earlier drawings illustrated embodiment and carry out, be appreciated that the central segment 37 of having only bar part 32,33 and 34 abutment surface friction slip with respect to cylindrical groove 7.
Another kind of situation can provide a circular-arc part at the end portion of rib-shaped piece, and its diameter is suitable for friction slip in cylindrical groove, and these end portions are separated by the less mid portion of diameter.
In both cases, the length of restriction and the bar of cylindrical groove inner face frictional fit part has guaranteed and the dwindling of cylindrical grooves surface contact area, reduce rib-shaped piece and inserted cylindrical groove, and pivotally supported therein frictional resistance.
In another embodiment shown in Figure 10, the cylindric knee part 20 shown in Fig. 3 a, 3b and the 3c is replaced by a chamfered edge part 39, and no longer contacts with the abutment surface of cylindrical grooves.By this contact being restricted to the only remaining bar part 19 and 21 that is positioned at relative two places, reduced tolerance to rib-shaped piece, make and make simply.
In another modified version, cylindric knee part can contact with the line of an equivalence with a contact portion of groove surfaces and replace, and its position also is on the cylindrical envelope face identical with the knee part of positioned opposite.
Although the rib-shaped piece 16,31 that constitutes one with the side surface of pad in the foregoing description in instrument be point to this instrument radially, but be appreciated that, if rib-shaped piece has the side surface of axial orientation, and groove also is axially to constitute in the dimple of cutter holder, and the locating effect of pad in cutter holder is good equally so.
In a specific examples according to metal-cutting machine tool of the present invention, instrument is designed to have following size:
D
1=4．72mm
d
1=5．00mm
D
2=4．50mm
d
2=5．02mm
Moreover, in the embodiment shown in Figure 10 a and the 10b, should not be less than 0.25 of rib total length with the central segment 32,33 of the contacted rib of abutment surface of groove and 34 length.
Understand easily, positioning rib is designed to have has limited circumferential length and, made things convenient for traditional powdered-metal compression and sintering technology production pad by the form of the separated cylindric knee part of straight portion.In a preferred embodiment, employing be carbide alloy, in fact can use the scrap hard alloy powder.
Claims (12)
- Claims1. cutting element, it comprises a cutter holder; Holding of constituting on above-mentioned cutter holder is received the location dimple; The bottom surface of above-mentioned dimple and sidewall and one are fixed in replaceable shim in the above-mentioned dimple with detachable form; It is characterized in that a cylindrical groove (7) is formed at and the bottom surface (6) of its common above-mentioned dimple of expanding (3) and the land of sidewall (5), by having lateral dimension D 1Narrow orifice (8) be open in the above-mentioned dimple, and have the cross section that is circular arc substantially, diameter is d 1, and d 1＞D 1, and right angle greater than 180 °; Above-mentioned replaceable shim (11) is made with sintering with metal dust is compressed, and comprises plate-like body part (12), and it has upper surface, bottom surface and sidewall (13,14 and 15); One rib-shaped piece (16), one of it and above-mentioned sidewall (15) constitute one and are projected into outside the above-mentioned bottom surface (14) of aforementioned body part (12) outer surface of above-mentioned rib-shaped piece (16), the circumferential section of the axial orientation of above-mentioned outer surface (19,21; 32,33), laterally opposed each other with respect to the length direction of rib (16) along the length direction cardinal principle symmetric arrangement of above-mentioned rib (16), and be in diameter d 2Angle is at least on 180 ° the positive cylindrical envelope face, above-mentioned rib (16) extends axially part (17,18) in addition, it is positioned at above-mentioned horizontal opposed circumferential section (19,21; 32,33), and has lateral dimension D 2, and D 1〉=D 2＜d 2, and d 2Be a bit larger tham d 1Make when the bottom surface of above-mentioned pad (11) with respect to the bottom surface (6) of above-mentioned dimple (3) at an angle the time, above-mentioned rib (16) can freely be inserted in the above-mentioned groove (7), and above-mentioned pad (11) rotates with respect to above-mentioned groove (7) pivot, makes it is the above-mentioned circumferential section (19,21 of above-mentioned rib (16) at least; 32,33) be tight friction with the wall of above-mentioned groove (7) and contact, thereby guarantee that above-mentioned pad (11) is fixing on the throne in above-mentioned dimple (3), pad (11) closely connects with the bottom surface (6) of dimple (3) simultaneously.
- 2. a cutting element according to claim 1 is characterized in that, above-mentioned rib-shaped piece (11) and above-mentioned groove (7) are vertical orientated substantially with respect to the longitudinal axis of cutter holder.
- 3. a cutting element according to claim 1 is characterized in that, above-mentioned rib-shaped piece (11) and above-mentioned groove (7) are parallel-oriented substantially with respect to the longitudinal axis of cutter holder.
- 4. replaceable shim is characterized in that it by metal dust compression and sintering are made, and it comprises a plate-like body partly (12), and end face, bottom surface and sidewall (13,14,15) are arranged; One rib-shaped piece (16) constitutes one and is projected into outside the above-mentioned bottom surface (14) of aforementioned body part (12) outer surface of above-mentioned rib-shaped piece (16), the circumferential section of the axial orientation of above-mentioned outer surface (19,21 with one of above-mentioned sidewall (15); 32,33), laterally opposed each other with respect to the length direction of rib (16) along the length direction cardinal principle symmetric arrangement of above-mentioned rib (16), and be in diameter d 2Angle is at least on 180 ° the positive cylindrical envelope face, above-mentioned rib (16) extends axially part (17,18) in addition, is positioned at above-mentioned horizontal opposed circumferential section (19,21; 32,33), and has lateral dimension D 2, and d 2＞D 2
- 5. a replaceable shim according to claim 4 is characterized in that, above-mentioned circumferential section (19,21; 32,33) the cylinder bar by axial orientation constitutes.
- 6. the replaceable shim according to claim 4 is characterized in that, above-mentioned mutual opposed part has at least one to be the fundamental line contact portion.
- 7. according to claim 4,5 or 6 described replaceable shims, it is characterized in that above-mentioned part (19,21) has at least one to be to extend generally along the whole length of above-mentioned rib.
- 8. according to claim 4,5 or 6 replaceable shim, it is characterized in that above-mentioned part (32,33) has at least one to be that interlude (37) generally along above-mentioned rib body extends.
- 9. according to claim 4,5 or 6 described replaceable shims, it is characterized in that above-mentioned these parts have at least one to be to extend along the termination section of above-mentioned rib body substantially.
- 10. according to claim 4,5 or 6 each described replaceable shims, it is characterized in that, above-mentioned axially extended part is formed between the surface that is the plane substantially of above-mentioned rib, but also provide one or more axles the big part that is the plane substantially that stretches, be in above-mentioned extending axially between the part respectively.
- 11., it is characterized in that above-mentioned rib (16) comprises at least one pair of vertical mutually, axially extended part according to claim 4,5 or 6 each described replaceable shims.
- 12. a replaceable shim according to claim 10 is characterized in that, above-mentioned planar section is parallel substantially, and one of above-mentioned planar section is concordant substantially with the end face of aforementioned body part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97191360 CN1204975A (en) | 1996-02-02 | 1997-01-30 | Metal cutting tool and replaceable shim therefor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL117015 | 1996-02-02 | ||
| CN 97191360 CN1204975A (en) | 1996-02-02 | 1997-01-30 | Metal cutting tool and replaceable shim therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1204975A true CN1204975A (en) | 1999-01-13 |
Family
ID=5178912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97191360 Pending CN1204975A (en) | 1996-02-02 | 1997-01-30 | Metal cutting tool and replaceable shim therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1204975A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115507A (en) * | 2013-02-04 | 2013-05-22 | 方彦 | Efficient drum type heat exchanger |
| CN102056696B (en) * | 2008-06-04 | 2014-02-26 | 株式会社钨钛合金 | Method for temporarily holding tip |
| CN106041187A (en) * | 2015-04-01 | 2016-10-26 | 德国莱德曼有限责任及两合公司 | Milling Tool and Cutting Element for Use in a Milling Tool |
| CN114932240A (en) * | 2022-07-01 | 2022-08-23 | 株洲钻石切削刀具股份有限公司 | Vertically mounted turning tool |
-
1997
- 1997-01-30 CN CN 97191360 patent/CN1204975A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056696B (en) * | 2008-06-04 | 2014-02-26 | 株式会社钨钛合金 | Method for temporarily holding tip |
| CN103115507A (en) * | 2013-02-04 | 2013-05-22 | 方彦 | Efficient drum type heat exchanger |
| CN106041187A (en) * | 2015-04-01 | 2016-10-26 | 德国莱德曼有限责任及两合公司 | Milling Tool and Cutting Element for Use in a Milling Tool |
| CN106041187B (en) * | 2015-04-01 | 2019-07-30 | 德国莱德曼有限责任及两合公司 | Milling tool and for applying the cutting element in milling tool |
| CN114932240A (en) * | 2022-07-01 | 2022-08-23 | 株洲钻石切削刀具股份有限公司 | Vertically mounted turning tool |
| CN114932240B (en) * | 2022-07-01 | 2023-11-14 | 株洲钻石切削刀具股份有限公司 | Vertical loading turning tool |
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