CN114289763A - Double-apex-angle olecranon drill with diamond coating - Google Patents
Double-apex-angle olecranon drill with diamond coating Download PDFInfo
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- CN114289763A CN114289763A CN202111670285.6A CN202111670285A CN114289763A CN 114289763 A CN114289763 A CN 114289763A CN 202111670285 A CN202111670285 A CN 202111670285A CN 114289763 A CN114289763 A CN 114289763A
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- Prior art keywords
- cutting edge
- olecranon
- angle
- tool bit
- drill
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 31
- 239000010432 diamond Substances 0.000 title claims abstract description 31
- 210000002221 olecranon process Anatomy 0.000 title claims abstract description 27
- 239000011248 coating agent Substances 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 114
- 230000009977 dual effect Effects 0.000 claims 9
- 238000005553 drilling Methods 0.000 abstract description 18
- 230000002035 prolonged effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model relates to a take diamond coating's double vertex angle olecranon to bore, relate to the field of drilling bit, it includes the tool bit and sets up the diamond coating on tool bit surface, the helicla flute has been seted up to the surface of tool bit and is formed with the cutting edge at the front end of tool bit, set up the circular arc groove that runs through the cutting edge on the rake face of cutting edge, the drill point angle that the circular arc groove passed the cutting edge, the cutting edge section that uses the circular arc groove to correspond is the second cutting edge, the cutting edge section that uses outside the second cutting edge is first cutting edge, contained angle between first cutting edge and the tool bit axis is a1, contained angle between second cutting edge and the tool bit axis is a2, a1 is greater than a 2. The drill bit has the advantages of high drilling precision, high hole wall smoothness after drilling, good drill bit wear resistance and long service life of the drill bit.
Description
Technical Field
The application relates to the field of drilling bits, in particular to a double-apex-angle olecranon drill with a diamond coating.
Background
The drill bit is a tool for drilling the round hole of the workpiece through the rotary cutting of the drill bit relative to the fixed axis, the hole limit of the conventional drill bit is 1000-3000, and the drill bit can be ground for three times under the condition of low quality requirement on the hole wall of the drilled hole, so that the practical service life of the drill bit is prolonged. However, the drilling hole wall quality requirement of the PCB plate in the 5G network communication is high, and under the condition that the drilling hole wall quality requirement is high, the drill bit can be used only once. Because the drill bit can form a suitable taper in two top departments of drill bit after wearing and tearing, also can not get rid of suitable taper part completely through returning the mill, the hole that the drill bit processing that returns the mill came out can be less than actual hole to still appear drill way cloak, burr scheduling problem easily.
Meanwhile, the PCB in the 5G network communication is a superhard multi-layer composite board, and when the conventional drill bit is used for processing the superhard multi-layer composite board, the problems of fast abrasion of a tool face, drill immobility, burning of a hole wall, short service life of a tool, difficulty in guaranteeing the quality of the hole wall and the like can occur. The superhard multilayer composite PCB is difficult to drill, the service life of a drill bit is prolonged, and the drill bit is frequently replaced, and along with the popularization of 5G and above network communication, the problem of hole machining of the superhard PCB in the application of 5G and above network communication is more and more prominent.
In view of the above-mentioned related art, the inventors provide a diamond coated double tip olecranon drill for PCB board processing.
Disclosure of Invention
In order to prolong the service life of the drill bit in the PCB plate drilling and ensure the drilling precision, the application provides the double-vertex-angle olecranon drill with the diamond coating, and the double-vertex-angle olecranon drill has the advantages of high drilling precision, high smoothness of the hole wall after drilling, good wear resistance of the drill bit and long service life of the drill bit.
The application provides a take two apex angle olecranon of diamond coating to bore adopts following technical scheme:
the utility model provides a take diamond coating's double vertex angle olecranon to bore, includes the tool bit and sets up the diamond coating on tool bit surface, the helicla flute has been seted up to the surface of tool bit and the front end of tool bit is formed with the cutting edge, seted up on the rake face of cutting edge and run through the circular arc groove of cutting edge, the circular arc groove passes the point angle of drill of cutting edge, with the cutting edge section that the circular arc groove corresponds is the second cutting edge, with cutting edge section outside the second cutting edge is first cutting edge, first cutting edge with contained angle between the tool bit axis is a1, the second cutting edge with contained angle between the tool bit axis is a2, a1 is greater than a 2.
By adopting the technical scheme, the diamond coating is arranged outside the cutter head, so that the hardness of the cutting part of the cutter head can be enhanced, the wear resistance of the cutter head is effectively enhanced, and the service life of the drill bit is prolonged; the diamond coating is added on the tool bit, so that the sharpness of the cutting edge is reduced, the machining precision and the hole wall finish degree of the hole are easily influenced, and the hole cutting resistance is increased; the sharpness of the point angle is improved by forming a narrow and thin tip structure, the strength of the point angle is poor, at the moment, the first cutting edge and the second cutting edge are provided with different included angles, and a1 is smaller, so that the sharpness of the point angle can be further improved, the length of the cutting edge section provided with the arc groove can be prolonged, the cutting resistance of the cutting edge section corresponding to the arc groove is small in the cutting process, and the point angle is not easy to break; the second cutting edge is arranged to be a2 larger than a1, and the stability of the second cutting edge is better when the hole is drilled, so that the drilling precision and the hole wall finish degree are improved.
Optionally, the angle of the a1 ranges from 75 degrees to 82.5 degrees, and the angle of the a2 ranges from 65 degrees to 70 degrees.
Optionally, the arc groove is a full arc, and the profile of the second cutting edge is an olecranon shape.
Through adopting above-mentioned technical scheme, the cross section profile of arc groove is full circular arc type, and this kind of design chip breaking is effectual, and the chip removal is smooth and easy, and the good cutter incorruptibility of heat dissipation condition is high. The second cutting edge is in an olecranon shape, and is matched with the double-included-angle design of the first cutting edge and the second cutting edge, and during the cutting and drilling process of the second cutting edge, a section of the second cutting edge, which is close to the first cutting edge, firstly cuts the plate; cutting panel behind the point angle of the second cutting edge, the point angle of olecranon type can directly cut off the clout on the pore wall from the root, can effectively improve the machining precision of pore wall, and at this moment, the material on the panel has been amputated earlier by the one end of first cutting edge, and the clout that the point angle of drilling will cut further reduces, and the cutting resistance who receives reduces.
Optionally, the tool also comprises a tool shank, and the tool shank and the tool bit are coaxially and integrally arranged.
By adopting the technical scheme, the mode of welding after respective processing is not adopted, and the disconnection of the drill bit connecting part in a high-temperature environment is avoided when the diamond coating is coated.
Optionally, a margin is arranged on the peripheral side of the cutter head.
Through adopting above-mentioned technical scheme, the margin is in the outermost of drill bit, forms the external diameter of drill bit, and keep in contact with the machined surface in hole all the time, because the existence of margin, formed the clearance between tool bit and the hole, this helps controlling friction and the heat that produces by the friction, in addition, the clearance still can make the coolant liquid flow in the drill bit blade, further reduce thermal production, the margin still is favorable to the drilling stable, increase the intensity of drill bit and prevent the drill bit adhesion, help prolonging the drill bit life-span and improve the precision in the hole of processing.
Optionally, the first cutting edge is provided with a chip breaker groove.
By adopting the technical scheme, the cutting scraps are further disconnected, the discharge is convenient, and the blockage of the cutting scraps is avoided.
Optionally, the radial rake angle on the second cutting edge is b, and b ranges from 12 ° to 18 °.
Through adopting above-mentioned technical scheme, the radial sword anterior angle of control second cutting edge, the sharpness of top closed angle promptly compromises the intensity and the sharpness of cutter.
Optionally, two kinds of flank surfaces with different angles are arranged on the flank surface on the tool bit, the flank surface angle close to the cutting edge is c1, the flank surface angle far away from the cutting edge is c2, c1 is 10-15 °, and c2 is 25-30 °.
Optionally, two spiral grooves are formed in the side wall of the cutter head, the two spiral grooves are centrosymmetric about the central axis of the cutter head, and two cutting edges are formed at the front end of the cutter head.
Optionally, a chisel edge is formed between the two cutting edges, and thinning grooves are respectively formed in two sides of the chisel edge in a centrosymmetric manner.
Through adopting above-mentioned technical scheme, reduce the axial force of tool bit.
In summary, the present application includes at least one of the following beneficial technical effects:
the cutting edge of the tool bit is divided into two sections by arranging the arc groove at the edge of the cutting edge of the tool bit, and the included angles between the first cutting edge and the second cutting edge are respectively set as a1 and a2, so that the strength of the cutting edge is improved while the sharpness of the cutting edge of the tool bit is improved, and thus, after a diamond coating is added, the higher sharpness of the cutting edge can be kept, and the quality of a tool for processing holes is ensured while the service life of the tool is prolonged;
through setting up the arc groove into full circular arc type, the profile of second cutting edge is olecranon type, and its cutting performance is better, can further improve the quality in processing hole.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic end view of an embodiment of the present application;
fig. 3 is a schematic angle diagram of the flank of a drill bit in an embodiment of the present application.
Reference numerals: 1. a cutter head; 11. a helical groove; 12. a cutting edge; 13. a first cutting edge; 131. a chip breaker groove; 14. a second cutting edge; 141. an arc groove; 142. drilling a sharp corner; 15. a margin; 16. a chisel edge; 161. thinning the groove; 2. a knife handle.
Detailed Description
The embodiment of the application discloses a double-vertex-angle olecranon drill with a diamond coating, and the double-vertex-angle olecranon drill with the diamond coating refers to fig. 1, and comprises a tool bit 1 and a tool shank 2 which are coaxially and integrally arranged, wherein the diamond coating is covered on the surface of the tool bit 1; a chamfer is arranged at one end of the cutter handle 2 far away from the cutter head 1; the side wall of the tool bit 1 is provided with two spiral grooves 11, the two spiral grooves 11 are centrosymmetric about the central axis of the tool bit 1, one end of the tool bit 1, which is far away from the tool shank 2, is a front end, and two cutting edges 12 are formed at the front end of the tool bit 1; a margin 15 is provided on the circumferential side of the tip 1.
Referring to fig. 1 and 2, an arc groove 141 penetrating through the cutting edge 12 is formed on the rake surface of the cutting edge 12, the arc groove 141 is a full-arc groove arranged along the trajectory of the spiral groove 11, and the arc groove 141 penetrates through a point angle 142 of the cutting edge 12; the cutting edge 12 segment corresponding to the arc groove 141 is taken as a second cutting edge 14, the cutting edge 12 segment outside the second cutting edge 14 is taken as a first cutting edge 13, the included angle between the first cutting edge 13 and the axis of the cutter head 1 is a1, the included angle between the second cutting edge 14 and the axis of the cutter head 1 is a2, and a1 is greater than a 2; the angle of a1 ranges from 75 ° to 82.5 °, and the angle of a2 ranges from 65 ° to 70 °.
The first cutting edge 13 is provided with a chip breaker 131; the profile of the second cutting edge 14 is olecranon-shaped, the radial edge rake angle on the second cutting edge 14 is b, and the angle of b ranges from 12 ° to 18 °.
A chisel edge 16 is formed between the two cutting edges 12, and thinning grooves 161 are formed on both sides of the chisel edge 16 in a centrosymmetric manner.
Referring to fig. 3, the flank face on the tool bit 1 is provided with two flank faces of different angles, the flank face angle near the cutting edge 12 is c1, the flank face angle far from the cutting edge 12 is c2, c1 is 10 ° to 15 °, and c2 is 25 ° to 30 °.
The embodiment of the application discloses a two apex angle olecranon of taking diamond coating bores implementation principle does: the diamond coating is arranged outside the cutter head 1, so that the hardness of the cutting edge 12 can be enhanced, the wear resistance of the cutter head 1 is effectively enhanced, and the service life of the drill bit is prolonged; the diamond coating is added on the tool bit 1, so that the sharpness of the cutting edge 12 is reduced, the processing precision of a hole is easily influenced, and the resistance of hole cutting is increased; the sharpness of the point angle 142 is improved by forming a narrow tip structure, the strength of the point angle is poor, at the moment, the first cutting edge 13 and the second cutting edge 14 are arranged at different included angles, and a1 is smaller, so that the sharpness of the point angle 142 can be further increased, the length of the second cutting edge 14 can be prolonged, the cutting resistance of the second cutting edge 14 is small in the cutting process, and the point angle 142 is not easy to break; the second cutting edge 14 is provided with a2 larger than a1, so that the stability of the second cutting edge 14 during drilling is better, and the drilling precision is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a take diamond coating's two apex angle olecranon to bore which characterized in that: including tool bit (1) and setting be in the diamond coating on tool bit (1) surface, spiral groove (11) have been seted up and cutting edge (12) have been formed to the front end of tool bit (1) to the surface of tool bit (1), seted up on the rake face of cutting edge (12) and run through arc groove (141) of cutting edge (12), arc groove (141) pass point angle (142) of cutting edge (12), with cutting edge (12) section that arc groove (141) corresponds is second cutting edge (14), with cutting edge (12) section outside second cutting edge (14) is first cutting edge (13), first cutting edge (13) with contained angle between tool bit (1) axis is a1, second cutting edge (14) with contained angle between tool bit (1) axis is a2, a1 is greater than a 2.
2. The diamond coated dual apex olecranon drill of claim 1, wherein: the angle range of the a1 is 75-82.5 degrees, and the angle range of the a2 is 65-70 degrees.
3. The diamond coated dual apex olecranon drill of claim 1, wherein: the arc groove (141) is of a full arc type, and the profile of the second cutting edge (14) is of an olecranon type.
4. The diamond coated dual apex olecranon drill of claim 1, wherein: the tool is characterized by further comprising a tool handle (2), wherein the tool handle (2) and the tool bit (1) are coaxially and integrally arranged.
5. The diamond coated dual apex olecranon drill of claim 1, wherein: the periphery of the cutter head (1) is provided with a cutting edge (15).
6. The diamond coated dual apex olecranon drill of claim 1, wherein: the first cutting edge (13) is provided with a chip breaker groove (131).
7. The diamond coated dual apex olecranon drill of claim 1, wherein: the radial edge rake angle on the second cutting edge (14) is b, and the angle of b ranges from 12 degrees to 18 degrees.
8. The diamond coated dual apex olecranon drill of claim 6, wherein: the rear tool face on the tool bit (1) is provided with two rear tool faces with different angles, the rear tool face angle close to the cutting edge (12) is c1, the rear tool face angle far away from the cutting edge (12) is c2, c1 is 10-15 degrees, and c2 is 25-30 degrees.
9. The diamond coated dual tip olecranon according to any one of claims 1 to 8, wherein: two spiral grooves (11) are formed in the side wall of the tool bit (1), the spiral grooves (11) are symmetrical about the central axis of the tool bit (1), and two cutting edges (12) are formed at the front end of the tool bit (1).
10. The diamond coated dual apex olecranon drill of claim 9, wherein: a chisel edge (16) is formed between the two cutting edges (12), and thinning grooves (161) are respectively formed in the two sides of the chisel edge (16) in a centrosymmetric mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111670285.6A CN114289763A (en) | 2021-12-30 | 2021-12-30 | Double-apex-angle olecranon drill with diamond coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111670285.6A CN114289763A (en) | 2021-12-30 | 2021-12-30 | Double-apex-angle olecranon drill with diamond coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114289763A true CN114289763A (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111670285.6A Withdrawn CN114289763A (en) | 2021-12-30 | 2021-12-30 | Double-apex-angle olecranon drill with diamond coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114289763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115644981A (en) * | 2022-11-07 | 2023-01-31 | 杭州欣润医疗科技有限公司 | Minimally invasive surgery cutter |
-
2021
- 2021-12-30 CN CN202111670285.6A patent/CN114289763A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115644981A (en) * | 2022-11-07 | 2023-01-31 | 杭州欣润医疗科技有限公司 | Minimally invasive surgery cutter |
| CN115644981B (en) * | 2022-11-07 | 2023-10-31 | 杭州欣润医疗科技有限公司 | Minimally invasive surgical tool |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220408 |
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| WW01 | Invention patent application withdrawn after publication |