CN101856735B - Drilling cutter - Google Patents
Drilling cutter Download PDFInfo
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- CN101856735B CN101856735B CN2010102177027A CN201010217702A CN101856735B CN 101856735 B CN101856735 B CN 101856735B CN 2010102177027 A CN2010102177027 A CN 2010102177027A CN 201010217702 A CN201010217702 A CN 201010217702A CN 101856735 B CN101856735 B CN 101856735B
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- hold assembly
- apex point
- locating surface
- axial locating
- drilling operations
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Abstract
The invention discloses a drilling cutter. The drilling cutter comprises a drill point part and a holding part, wherein the center of the bottom of the drill point part is provided with a fixed boss; the center of the top of the holding part is provided with a fixed seat capable of holding the fixed boss through elastic deformation; a slot which enables the fixed seat to elastically open is formed on the holding part; the slot is formed along a central axis of the cutter; the bottom of the slot is provided with two extension segments which are distributed in a V shape; and a pair of torsion acting surfaces are formed on two groove walls of the central section of the slot. The drilling cutter has the advantages of simple structure, easy and convenient assembling and disassembling process, no abrasion and durability. The invention also discloses a cam wrench used for assembling and disassembling the drilling cutter. The cam wrench comprises a handle part and a cam part which is connected with the handle part, wherein a radial cross section of the cam part is a rhombus with rounded four corners; a short diagonal of the rhombus is D1; and a long diagonal is D2; D2-D1 equals to delta d; D2:D1 equals to q; the delta d is more than or equal to 0.05 mm and is less than or equal to 1 mm; and the q is more than 1 and is less than or equal to 1.4.
Description
Technical field
The present invention relates to be used for the instrument of Drilling Operations, relate in particular to a kind of Drilling Operations cutter and be used to load and unload the cam spanner of this cutter.
Background technology
In Drilling Operations; The cutting tip of Drilling Operations cutter is participated in cutting; In order to prolong the service life of cutting tip, adopt comparatively valuable carbide alloy or similar material to make cutting tip usually, because this type of material has hardness height, characteristics that wearability is good; So processing is difficulty very, this makes drilling cutters all higher with material cost and processing cost.One is to be assembled by cutting part and hold assembly for a drilling cutters commonly used at present; Carbide alloy or materials similar that wherein cutting part is big by hardness, anti-wear performance is strong are processed; And hold assembly is processed by having bigger flexible material; After cutting part is worn, cutting part can be changed separately, thereby the cost of Drilling Operations can be reduced.
Publication number is that the Chinese patent document of CN1585682A discloses a kind of cutting element; Comprise sheath body and cutting part two parts, they have a dovetail shape structure respectively, and this two-part swallowtail-shaped structure can cooperatively interact; Elastic protrusion skew through sheath body produces deformation; Cutting part is formed clamping,, and make the stable connection of two parts through cooperation perpendicular to basal plane and the dovetail shape face of axis.This instrument is through the connector acting surface in the slit of sheath body, transmits moment of torsion and elastic protrusion is squinted, and we find that there is following problem in it in the actual cut process: 1, radially area is bigger owing to elastic protrusion; When causing the loading and unloading cutting tip, extracting tool is stressed bigger, and the extracting tool lifting surface area is less; Extracting tool and sheath body be as easy as rolling off a log impression to be occurred and damages; And the service life of reducing instrument, and when the loading and unloading cutting part, the subtended angle that elastic protrusion can reach is too small; Cutting part is along the dovetail tongue-and-groove slippage of sheath body; Unavoidably friction between the two, and sheath body one adopt the relatively poor relatively material of anti-wear performance to process, often in the dovetail tongue-and-groove serious wear that makes after the loading and unloading several times on the sheath body; Sheath body can't not have under the situation of external force cutting part to be formed reliable clamping, cause sheath body to lose efficacy; 2, sheath body and the cutting part swallowtail-shaped structure location through being parallel to each other when cutting part receives the power parallel with swallowtail-shaped structure, causes cutting part to come off easily; 3, through swallowtail-shaped structure central circular groove cutting part and sheath body are felt relieved; This circular groove diameter receives the restriction of swallowtail-shaped structure; The width that can only reach at most bottom swallowtail-shaped structure equates, so the centering effect that this circular groove can reach is limited.
Summary of the invention
The technical problem that the present invention will solve is the deficiency that overcomes prior art, provides a kind of simple in structure, and cargo handling process is easy and convenient, the nothing wearing and tearing, long-lived Drilling Operations cutter.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of Drilling Operations cutter; Comprise apex point parts and hold assembly, the center of said apex point feature bottom is provided with fixing lug boss, and the center at said hold assembly top is provided with the holder that can grip boss through strain; Said hold assembly is provided with and can makes the open slit of holder elasticity; Said slit is provided with along the axis of cutter, and the slit bottom is provided with the extension of two sections V-shaped distributions, and the slit middle part is provided with the pair of torque acting surface in two cell walls.
The extension of said two sections V-shaped distributions is the bilateral symmetry layout in the axis.
The radial section of said fixing lug boss reduces to the tip from the bottom of apex point parts gradually, the faying face of said fixing lug boss and said holder be symmetrical centre on the axis, the fairing curved surface or the combinatorial surface that are centrosymmetric.
Said fixing lug boss is circular cone shape, and the cone angle of the said frustum of a cone is α
1, said holder is the conical grooves shape, and the cone angle of said conical grooves is α
2, 0.25 °＜α
1-α
2＜4 °.
The periphery of said apex point feature bottom is provided with circumferential alignment concavity, and the periphery at said hold assembly top is provided with the circumferential positioning boss face that cooperates with said circumferential alignment concavity.
Said apex point feature bottom is provided with apex point first axial locating surface and apex point second axial locating surface; Said hold assembly top is provided with first axial locating surface and second axial locating surface; Said apex point first axial locating surface closely contacts with first axial locating surface, and said apex point second axial locating surface closely contacts with second axial locating surface.
A kind of cam spanner that is used to load and unload above-mentioned Drilling Operations cutter comprises shank and the cam part that links to each other with shank, and the radial section of said cam part is the rhombus of four rounding of angle, and the short diagonal of said rhombus is D
1, long-diagonal is D
2, D
2-D
1=Δ d, D
2: D
1=q, 0.05mm≤Δ d≤1mm, 1＜q≤1.4.
Compared with prior art, the invention has the advantages that:
Drilling Operations cutter of the present invention; The bottom of slit is provided with the extension of two sections V-shaped distributions on hold assembly, and this slot configurations with V-arrangement extension can make the easier elasticity of the holder on the hold assembly open, and avoids between hold assembly and the handling instrument because of the stressed excessive impression that produces; But the open angle of holder elasticity is bigger simultaneously; The apex point parts are packed into or can be avoided and the hold assembly friction when unloading, prevent that hold assembly from producing wearing and tearing in cargo handling process, make hold assembly durable in use; Prolong service life, reduces production costs.The radial section of apex point feature bottom fixing lug boss reduces to the tip from the bottom of apex point parts gradually; Make hold assembly not only produce chucking power radially to the apex point parts; Also reality hold assembly the apex point component axial is compressed, simultaneously, the faying face of fixing lug boss and said holder is centrosymmetric fairing curved surface or the combinatorial surface of symmetrical centre on the axis; This makes the effect that combines to reach fine centering of fixing lug boss and holder; Guarantee the axiality of apex point parts and hold assembly, and can prevent that the apex point parts from radially from the hold assembly accidental, having improved clamping stability greatly.The radial section of the cam part of cam spanner of the present invention is the rhombus of four rounding of angle, limits through long and short cornerwise difference and ratio to rhombus, can avoid the distortion of hold assembly to exceed the limit of strain, prevents that plastic deformation from appearring in hold assembly.
Description of drawings
Fig. 1 is the main TV structure sketch map of Drilling Operations cutter embodiment of the present invention;
Fig. 2 is the left TV structure sketch map of Drilling Operations cutter embodiment of the present invention;
Fig. 3 is the main TV structure sketch map of apex point parts among the Drilling Operations cutter embodiment of the present invention;
Fig. 4 is the main TV structure sketch map of hold assembly among the Drilling Operations cutter embodiment of the present invention;
Fig. 5 is the plan structure sketch map of hold assembly among the Drilling Operations cutter embodiment of the present invention;
Fig. 6 is the A-A cross section view of hold assembly among Fig. 2;
Fig. 7 is the perspective view of cam spanner embodiment of the present invention;
Fig. 8 is the perspective view of the Drilling Operations cutter being loaded and unloaded with cam spanner of the present invention.
Each label is represented among the figure:
1, apex point parts; 2, hold assembly; 3, axis; 4, cam part; 5, shank; 11, circumferential alignment concavity; 12, fixing lug boss; 13, apex point first axial locating surface; 14, apex point second axial locating surface, 21, circumferential positioning boss face; 22, holder; 23, slit; 24, extension; 25, torsional interaction face; 26, first axial locating surface; 27, second axial locating surface.
The specific embodiment
Fig. 1 to Fig. 6 shows a kind of Drilling Operations cutter embodiment of the present invention, and this cutter comprises apex point parts 1 and hold assembly 2, and the center of apex point parts 1 bottom is provided with fixing lug boss 12; The center at hold assembly 2 tops is provided with the holder 22 that can grip boss 12 through strain; Hold assembly 2 is provided with and can makes the open slit 23 of holder 22 elasticity, and slit 23 is provided with along the axis 3 of cutter, and slit 23 bottoms are provided with the extension 24 of two sections V-shaped distributions; The extension 24 of two sections V-shaped distributions is 3 bilateral symmetry layout in the axis; Slit 23 middle parts are provided with pair of torque acting surface 25 in two cell walls, and this structure with slit 23 of V-arrangement extension 24 can make the easier elasticity of the holder 22 on the hold assembly 2 open, and avoids between hold assembly 2 and the handling instrument because of the stressed excessive impression that produces; But the open angle of holder 22 elasticity is bigger simultaneously; Apex point parts 1 are packed into or can be avoided when unloading and hold assembly 2 frictions, prevent that hold assembly 2 from producing wearing and tearing in cargo handling process, make hold assembly 2 durable in use; Prolong service life, reduces production costs.
In the present embodiment, the radial section of fixing lug boss 12 reduces to the tip from the bottom of apex point parts 1 gradually, makes hold assembly 2 not only produce chucking power radially to apex point parts 1, has also realized the axial compression of 2 pairs of apex point parts 1 of hold assembly; The faying face of fixing lug boss 12 and holder 22 be symmetrical centre on axis 3, the fairing curved surface or the combinatorial surface that are centrosymmetric; Wherein the fairing curved surface can be taper surface, parabola or N curvilinear plane; Combinatorial surface can be the combination of a plurality of planar combination, a plurality of curved surfaces or the combination of plane and curved surface, and this makes the effect that combines to reach fine centering of fixing lug boss 12 and holder 22, guarantees the axiality of apex point parts 1 and hold assembly 2; And can prevent that apex point parts 1 are radially from hold assembly 2 accidental; Improved clamping stability greatly, in the present embodiment fixing lug boss 12 has been set as circular cone shape, the cone angle of the frustum of a cone is α
1, holder 22 is the conical grooves shape, and the cone angle of conical grooves is α
2, 0.25 °＜α
1-α
2＜4 °, α in the present embodiment
1And α
2Difference be 1 °, for fixing lug boss 12 and holder 22 combine reserved certain surplus that compresses, guarantee to compress reliable.The periphery of apex point parts 1 bottom is provided with circumferential alignment concavity 11, and the periphery at hold assembly 2 tops is provided with circumferential positioning boss face 21, and circumferentially positioning boss face 21 cooperates with circumferential alignment concavity 11, realizes the circumferential location of apex point parts 1 and hold assembly 2; Apex point parts 1 bottom is provided with apex point first axial locating surface 13 and apex point second axial locating surface 14; Hold assembly 2 tops are provided with first axial locating surface 26 and second axial locating surface 27; Apex point first axial locating surface 13 closely contacts with first axial locating surface 26; Apex point second axial locating surface 14 closely contacts with second axial locating surface 27, realizes the axial location of apex point parts 1 and hold assembly 2.
Fig. 7 and Fig. 8 show a kind of cam spanner embodiment of the present invention; This cam spanner is used for loading and unloading as the described Drilling Operations cutter of above-mentioned embodiment; This cam spanner comprises shank 5 and the cam part 4 that links to each other with shank 5; The radial section of cam part 4 is the rhombus of four rounding of angle, and the short diagonal of this rhombus is D
1, long-diagonal is D
2, D
2-D
1=Δ d, D
2: D
1=q, 0.05mm≤Δ d≤1mm, 1＜q≤1.4; In the present embodiment, Δ d=0.5mm, q=1.2; Long and short cornerwise difference and ratio through to rhombus limit, and can avoid the distortion of hold assembly 2 to exceed the limit of strain, prevent that plastic deformation from appearring in hold assembly 2.
Above-mentioned is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art, under the situation that does not break away from technical scheme scope of the present invention, all the technology contents of above-mentioned announcement capable of using is made many possible changes and modification to technical scheme of the present invention, or is revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical scheme of the present invention, all should drop in the scope of technical scheme protection of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (6)
1. Drilling Operations cutter; Comprise apex point parts (1) and hold assembly (2); The center of said apex point parts (1) bottom is provided with fixing lug boss (12); The center at said hold assembly (2) top is provided with the holder (22) that can grip boss (12) through strain, and it is characterized in that: said hold assembly (2) is provided with and can makes the open slit of holder (22) elasticity (23), and said slit (23) is provided with along the axis (3) of cutter; Slit (23) bottom is provided with the extension (24) of two sections V-shaped distributions, and slit (23) middle part is provided with pair of torque acting surface (25) in two cell walls.
2. Drilling Operations cutter according to claim 1 is characterized in that: the extension of said two sections V-shaped distributions (24) are (3) bilateral symmetry layout in the axis.
3. Drilling Operations cutter according to claim 1 and 2; It is characterized in that: the radial section of said fixing lug boss (12) reduces to the tip from the bottom of apex point parts (1) gradually, and said fixing lug boss (12) is symmetrical centre (3) are gone up, are centrosymmetric in the axis fairing curved surface or combinatorial surface with the faying face of said holder (22).
4. Drilling Operations cutter according to claim 3 is characterized in that: said fixing lug boss (12) is circular cone shape, and the cone angle of the said frustum of a cone is α
1, said holder (22) is the conical grooves shape, and the cone angle of said conical grooves is α
2, 0.25 °＜α
1-α
2＜4 °.
5. Drilling Operations cutter according to claim 4; It is characterized in that: the periphery of said apex point parts (1) bottom is provided with circumferential alignment concavity (11), and the periphery at said hold assembly (2) top is provided with the circumferential positioning boss face (21) that cooperates with said circumferential alignment concavity (11).
6. Drilling Operations cutter according to claim 5; It is characterized in that: said apex point parts (1) bottom is provided with apex point first axial locating surface (13) and apex point second axial locating surface (14); Said hold assembly (2) top is provided with hold assembly first axial locating surface (26) and hold assembly second axial locating surface (27); Said apex point first axial locating surface (13) closely contacts with hold assembly first axial locating surface (26), and said apex point second axial locating surface (14) closely contacts with hold assembly second axial locating surface (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102177027A CN101856735B (en) | 2010-07-05 | 2010-07-05 | Drilling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102177027A CN101856735B (en) | 2010-07-05 | 2010-07-05 | Drilling cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101856735A CN101856735A (en) | 2010-10-13 |
| CN101856735B true CN101856735B (en) | 2012-01-18 |
Family
ID=42943021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102177027A Active CN101856735B (en) | 2010-07-05 | 2010-07-05 | Drilling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101856735B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847992B (en) | 2012-09-21 | 2015-07-29 | 株洲钻石切削刀具股份有限公司 | A kind of drilling machining cutter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4435857A1 (en) * | 1994-10-07 | 1996-04-11 | Kennametal Hertel Ag | Drill with a bit part |
| IL120948A0 (en) * | 1997-05-29 | 1997-09-30 | Iscar Ltd | Cutting tool assembly |
| SE0103752L (en) * | 2001-11-13 | 2003-05-14 | Sandvik Ab | Rotatable tool for chip separating machining and cutting part herewith |
| SE528020C2 (en) * | 2004-01-14 | 2006-08-08 | Sandvik Intellectual Property | Rotatable chip separating tool |
| CN100488683C (en) * | 2004-04-20 | 2009-05-20 | 山特维克知识产权股份有限公司 | Rotatable cutter for chip-removing machining |
| JP2006272472A (en) * | 2005-03-28 | 2006-10-12 | Kyocera Corp | Throwaway type drill |
-
2010
- 2010-07-05 CN CN2010102177027A patent/CN101856735B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101856735A (en) | 2010-10-13 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |