CN104227093B - Drill point centering countersinking cutter - Google Patents
Drill point centering countersinking cutter Download PDFInfo
- Publication number
- CN104227093B CN104227093B CN201410465451.2A CN201410465451A CN104227093B CN 104227093 B CN104227093 B CN 104227093B CN 201410465451 A CN201410465451 A CN 201410465451A CN 104227093 B CN104227093 B CN 104227093B
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- Prior art keywords
- apex point
- blade
- main
- auxiliary
- cutting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/10—Bits for countersinking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a drill point centering countersinking cutter. The drill point centering countersinking cutter comprises a cutter handle, a cutter body, a main blade and an auxiliary blade group; the rear end of the cutter body is connected with the front end of the cutter handle; the main blade which is arranged at the front end of the cutter body comprises two cutting portions which are in blade shapes; the two cutting portions are reversely arranged and accordingly two main cutting edges of the two cutting portions are respectively arranged on two opposite sides of the main blade; two rear cutter faces of the two cutting portions jointly form into a main rear cutter face of the main blade; the middle of the main rear cutter face is provided with a protruding drill point; the front end of the cutter body is provided with two main chip removal grooves corresponding to two front cutter faces of the two cutting portions; the auxiliary blade group comprises auxiliary blades which are arranged at the front end of the cutter body and on bilateral sides of the main blade. According to the drill point centering countersinking cutter, the main blade comprises the two cutting portions and the drill point, can ream rough and high-hardness blank surfaces and machine a guide hole which enables follow-up drilling to be facilitated and has a centering effect, so that the cutting tool machining vibration is relieved, the machining efficiency is high, and the service life is long.
Description
Technical field
The present invention relates to countersink field, particularly to a kind of apex point centering countersink.
Background technology
In machining process industry, by the black skin that casting pig casts, nail was being carried out to such as cooler for engine oil cover etc.
Hole or thread Pilot hole processing when, traditional processing technique is generally divided into two kinds: the first be first using centre drill on black skin
Centering, then using bit bore, finally reuses traditional flat spot face of countersink ream, traditional countersink is in cutter hub
Front end edge even circumferential lays several blades, and the rear knife face of blade protrudes from the front end face of cutter hub, with the cutting by blade
The flat black skin of sword ream, each blade of this kind of countersink is separate, is empty in the middle of the front end of cutter hub, the ream of this quasi-tradition
Knife must by drill bit get out on black skin suitable hole could the flat spot face of ream further, and can not directly ream be flat does not also have
The black skin of boring；Second is using the flat-bottom end mill first direct flat black skin of ream, then holes again.Yet with casting pig
The factor such as the out-of-flatness of black skin, coarse and hardness is high, often causes the drill bit of the first processing technique hard in cutting blank
Easy tipping and Fast Wearing during epidermis face, and the work step of this technique is various, reduces production efficiency.And second processing
Although technique is obviously improved (saving centering work step) in production efficiency, it is because that flat-bottom end mill has center sword
Linear velocity be zero characteristic, this makes center sword become the cutting of strong squash type in the course of processing, easily causes center sword
Collapse brokenly.In addition the out-of-flatness of black skin makes the unbalanced tool sharpening that also results in of cutting force vibrate, and accelerates the abrasion of cutter, impact
The rated life time of cutter, cause the high cost of charp tool.
The information being disclosed in this background section is merely intended to increase the understanding of the general background to the present invention, and should not
Recognize when being considered or imply in any form that this information structure has been the prior art well known to persons skilled in the art.
Content of the invention
The countersink it is an object of the invention to provide a kind of apex point is felt relieved, it being capable of the smoothly flat out-of-flatness of ream, coarse and high
The black skin of hardness, and process the centre pilot hole beneficial to follow-up boring, it can be avoided that the extruding cutting of center sword, thus ensureing
Working (machining) efficiency, improve cutter life and reduce the cost of charp tool.
For achieving the above object, a kind of countersink the invention provides apex point is felt relieved, comprising: handle of a knife；Cutter hub, its rear end and institute
The front end stating handle of a knife connects；Wherein, also include: main blade, it is arranged at the front end of described cutter hub, and this main blade includes two and is in
Cultrate cutting portion, the rear knife face of this cutting portion protrudes from the front end face of described cutter hub；Described two cutting portions are oppositely arranged,
So that the two of this two cutting portions main cutting edges are respectively positioned at the both sides of described main blade through-thickness；Described two cuttings
After two of portion, knife face collectively constitutes knife face after the master of described main blade, and after this master, the middle part of knife face is provided with the apex point of projection,
This apex point is corresponding with the axis of described cutter hub；The front end of described cutter hub corresponds to two rake faces of described two cutting portions respectively
It is provided with two main chip areas.
Preferably, in technique scheme, described apex point include two respectively from described two cutting portions rear knife face to
Knife face after the obliquely raised apex point of the middle upper part of knife face after master, after this two apex points, the protruding end of knife face is intersected, and in phase
Form an apex point chisel edge, the midpoint of this apex point chisel edge is located on the axis of described cutter hub at friendship；After each described apex point knife face with
The corresponding side of main cutting edge of its described cutting portion being located is the apex point cutting edge of described apex point.
Preferably, in technique scheme, two apex point cutting edges of described apex point are in one of described cutting portion
The angle of the projection in plane that rake face is located is apex point angle, and the size of this apex point angle is 110 °～135 °.
Preferably, in technique scheme, the length of described apex point chisel edge is 1～2mm, and described apex point chisel edge is than described
High 0.8～the 1.5mm of main cutting edge of cutting portion.
Preferably, in technique scheme, the front end of described cutter hub is provided with two and is cut with described two apex points respectively
Sword corresponding apex point chip area, and this two apex point chip areas are connected with described two main chip areas respectively.
Preferably, in technique scheme, the width of described apex point chip area is 3.5～4mm.
Preferably, in technique scheme, the front end of described cutter hub is provided with least one auxiliary-blade group；Each described pair
Set of blades includes the auxiliary-blade of two both sides being distributed in described main blade, the main cutting edge of described auxiliary-blade and described cutting portion
Main cutting edge in the same plane perpendicular to described cutter hub axis；And two described auxiliary-blades of each described auxiliary-blade group
Main cutting edge be located on the same straight line of axes intersect with described cutter hub；The front end of described cutter hub corresponds to described auxiliary-blade
Rake face be provided with secondary chip area.
Preferably, in technique scheme, the front end of described cutter hub is provided with a described auxiliary-blade group, this auxiliary-blade group
The main cutting edge of two described auxiliary-blades be located at the axes intersect of same and described cutter hub and straight perpendicular to described main blade
On line.
Preferably, in technique scheme, described main blade and auxiliary-blade are fixedly installed on described by way of welding
The front end of cutter hub.
Preferably, in technique scheme, described main blade and auxiliary-blade are integrally formed with described cutter hub.
Compared with prior art, the invention has the following beneficial effects:
1st, the main blade of the present invention is formed in cultrate cutting portion by two, and is provided with apex point, apex point on main blade
Certralizing ability can mitigate cutter vibration in process so that cutter can smoothly the flat out-of-flatness of ream, coarse and
The black skin of high rigidity, can be directly applied for the black skin do not holed, and the center beneficial to follow-up boring that simultaneously can also process is led
Xiang Kong, had both been avoided that easy tipping, can reach highly-efficient processing, the purpose improving cutter life and reducing the cost of charp tool again.
2nd, after the apex point that the apex point on main blade of the present invention is protruded and intersected by two, knife face is formed, on knife face after this two
It is respectively arranged with two apex point cutting edges, so that apex point is easy to process and reconditioning shapes, and ensure that apex point has enough intensity,
To improve working (machining) efficiency further and to ensure cutter life.
3rd, the present invention passes through to arrange auxiliary-blade group in the front end of cutter hub, so that cutting force is uniformly distributed, mitigates further
Processing vibration, improves working (machining) efficiency, and extends the life-span of main blade.
4th, the main blade of the present invention and auxiliary-blade are fixed on cutter hub front end by way of welding, or main blade and secondary knife
Piece is integrally formed with cutter hub, and it manufactures and easy to process, and can improve the rigidity of cutter.
Brief description
Fig. 1 is the perspective view according to apex point of the present invention centering countersink.
Fig. 2 is the top view of the Fig. 1 according to apex point of the present invention centering countersink.
Fig. 3 is the perspective view of the main blade according to apex point of the present invention centering countersink.
Main Reference Numerals illustrate:
1- handle of a knife；2- cutter hub, the main chip area of 21-, 22- pair chip area, 23- apex point chip area；3- main blade, 31- cuts
Portion, knife face after 311- cutting portion, 312- cutting portion main cutting edge, 313- cutting portion rake face；32- apex point, knife after 321- apex point
Face, 322- apex point chisel edge, 323- apex point cutting edge；4- auxiliary-blade, 41- auxiliary-blade main cutting edge.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by specific embodiment.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " inclusion " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or ingredient, and do not exclude other units
Part or other ingredient.
As shown in Figure 1 to Figure 3, a kind of apex point centering countersink according to the specific embodiment of the invention, comprising: handle of a knife 1,
Cutter hub 2 and main blade 3, wherein:
As shown in figure 1, the rear end of cutter hub 2 is connected with the front end of handle of a knife 1, and cutter hub 2 is coaxial with handle of a knife 1.Main blade 3 is fixing
It is arranged at the front end of cutter hub 2.As shown in Figures 2 and 3, main blade 3 includes two is in cultrate cutting portion 31, cutting portion 31 with
The structure of traditional plane countersink blade is identical, and the rear knife face of cutting portion 31 is knife face 311 after cutting portion, and the master of cutting portion 31 cuts
Cutting sword is cutting portion main cutting edge 312, and the rake face of cutting portion 31 is cutting portion rake face 313.Main blade 3 is installed on cutter hub 2
Front end when, after the cutting portion of cutting portion 31, knife face 311 protrudes from the front end face of cutter hub 2.This two cutting portions 31 are oppositely arranged
And integrally formed collectively constitute the master of main blade 3 to form knife face 311 after main blade 3, and the cutting portion of this two cutting portions 31
Knife face afterwards.Because two cutting portions 31 are oppositely arranged, and cutting portion 31 has certain relief angle, therefore knife face after two cutting portions
311 incline direction is contrary, and two cutting portion main cutting edges 312 are located at the contrary both sides of main blade 3 through-thickness respectively, right
Ying Di, two cutting portion rake faces 313 are located at the contrary both sides of main blade 3 through-thickness respectively；The front end of cutter hub 2 is provided with
Two main chip areas 21 corresponding with this two cutting portion rake faces 313.When cutter rotates, this two cutting portion main cutting edges
312 can cut to black skin along direction of rotation simultaneously, and carry out chip removal by main chip area 21.Knife after the master of main blade 3
The middle part in face is provided with the apex point 32 of projection, and apex point 32 is corresponding with the axis of cutter hub 1.When cutter is processed, apex point 32 is first
Centre pilot hole being got out on black skin, to feel relieved to cutter, thus reducing cutter vibration in process, making two
Individual cutting portion main cutting edge 312 can the smoothly flat black skin of ream, and process the centre pilot hole being conducive to subsequently holing, with
When by arrange apex point 32 it can be avoided that center sword extruding cutting.
Preferably, as shown in figure 3, apex point 32 include two respectively from after two cutting portions knife face 311 obliquely to operator
Knife face 321 after the raised apex point of the middle upper part of knife face after the master of piece 3, after this two apex points, the protruding end of knife face 321 is intersected, and
Form an apex point chisel edge 322 in intersection, the midpoint of this apex point chisel edge 322 is located on the axis of cutter hub 2.Knife face after each apex point
The apex point cutting edge 323 that 321 is apex point 32 with the corresponding side of cutting portion main cutting edge 312 of the cutting portion 31 that it is located, because
This, after two apex points, knife face 321 has two apex point cutting edges 323 respectively, and this two apex point cutting edges 323 are respectively with corresponding two
Individual cutting portion main cutting edge 312 is connected.This two apex point cutting edges 323 are in putting down that one of cutting portion rake face 313 is located
The angle of the projection on face is apex point angle, and the size of this apex point angle can use 110 °～135 °.Preferably, the angle of apex point angle
Spend for 118 °.Apex point 32 is made up of knife face 321 after two raised apex points, makes apex point 32 be in that triangular shape is raised, apex point 32 also may be used
It is arranged to the projection of the other shapes such as coniform, but with respect to the projection using other forms, apex point 32 is in triangular shape projection more
Plus easily reconditioning shapes, and there is more preferable intensity, service life is longer.Further, since needing certain relief angle to ensure to bore
The intensity of sharp cutting edge 323 is it is preferable that as shown in Fig. 2 primary relief is set to 3～8 °, that is, after two apex points, knife face 321 is same
When tilt 3～8 ° with respect to the thickness direction of main blade 3, so that apex point chisel edge 322 non-perpendicular to cutting portion main cutting edge
312.The height of apex point 32 projection determines the height of apex point chisel edge 322 it is preferable that apex point chisel edge 322 ratio cutting portion main cutting
Sword 312 exceeds 0.8～1.5mm；And by reconditioning is carried out to the both sides corresponding to apex point chisel edge 322 on apex point 32, with apex point
The length reconditioning of chisel edge 322 be 1～2mm so that the existing enough intensity of apex point 32 can process on black skin again depth with
Diameter suitable centre pilot hole, it is to avoid apex point chisel edge 322 is long and apex point 32 is too high and affect cutting-tool's used life, also keep away
Exempt from that apex point chisel edge 322 is too short and apex point 32 is too low and suitable centre pilot hole can not be processed on black skin, lead to center
The effect that pilot hole does not have centering and reduces vibration.Preferably, apex point chisel edge 322 exceeds than cutting portion main cutting edge 312
1mm.It is further preferred that as depicted in figs. 1 and 2, the front end of cutter hub 2 be provided with two respectively with two apex point cutting edges 323
Corresponding apex point chip area 23, and this two apex point chip areas 23 are connected with corresponding two main chip areas 21 respectively, apex point is arranged
The width of bits groove 23 is consistent with the thickness direction of main blade 3, and the width of apex point chip area 23 is 3.5～4mm, that is, cut
Portion's rake face 313 is 3.5～4mm with the distance of the side wall of apex point chip area 23.Apex point chip area 23 is easy to apex point 32 and is cut
Cut chip removal during processing, the iron filings that apex point 32 carries out to black skin producing in working angles enter into main row by apex point chip area 23
Bits groove 21, and finally discharged by main chip area 21, apex point chip area 23 can prevent swaging clamp and tipping, to improve the use longevity of cutter
Life, and by arranging apex point chip area 23, enough spaces can be provided for the reconditioning of apex point 32, to facilitate the reconditioning to apex point 32
Processing.
Further, as depicted in figs. 1 and 2, the front end of cutter hub 2 is provided with least one auxiliary-blade group；Each auxiliary-blade
Group includes the auxiliary-blade 4 of two both sides being distributed in main blade 3, the blade knot of the structure of auxiliary-blade 4 and traditional plane countersink
Structure is identical, and the main cutting edge of auxiliary-blade 4 cuts sword 41, auxiliary-blade main cutting edge 41 and cutting portion main cutting edge for auxiliary-blade operator
312 in the plane of the same axis perpendicular to cutter hub 2, and the auxiliary-blade master of two auxiliary-blades 4 in each auxiliary-blade group cuts
Cut sword 41 to be located on the same straight line of axes intersect with cutter hub 2.It is preferably located at the auxiliary-blade 4 of main blade 3 both sides respectively all
Even distribution.The rake face that the front end of cutter hub 2 corresponds to each auxiliary-blade 4 is provided with a secondary chip area 22, in order in cutting
Chip removal during processing.By arranging auxiliary-blade group and the main blade 3 flat black skin of ream simultaneously, cutting force is made to be uniformly distributed, and by secondary knife
Piece 4 shares the cutting force that main blade 3 is born, and can mitigate processing vibration further, improve working (machining) efficiency, and extend main blade
3 life-span.Preferably, as depicted in figs. 1 and 2, the front end of cutter hub 2 is provided with an auxiliary-blade group, two of this auxiliary-blade group
The auxiliary-blade main cutting edge 41 of auxiliary-blade 4 is located at the same axes intersect with cutter hub 2 and on the straight line of main blade 3, with
Two auxiliary-blades 4 and main blade 3 is made to be arranged at the front end of cutter hub 2 in cross.Auxiliary-blade group also can be according to the tool of cutter hub 2 diameter
Body size arranges rational quantity.
Preferably, the front end of cutter hub 2 is correspondingly arranged on main blade mounting groove and auxiliary-blade mounting groove, main blade 3 and secondary knife
In the main blade mounting groove and auxiliary-blade mounting groove of the front end that piece 4 is fixed on cutter hub 2 by way of welding.For guaranteeing cutter
Machining accuracy, first can be welded in the cutter blank of main blade 3 and auxiliary-blade 4 main blade mounting groove and the auxiliary-blade peace on cutter hub 2
Tankage, then on the basis of the axis of cutter hub 2, carries out reconditioning shaping to the cutter blank of main blade 3 and auxiliary-blade 4, it is easily manufactured,
Cost is relatively low, and the precision of cutter is higher.Or main blade 3 and auxiliary-blade 4 are integrally formed with cutter hub 2, that is, directly in cutter hub 2
Front end processes main blade 3 and auxiliary-blade 4 by reconditioning, and it is easily manufactured, simultaneously facilitates to the main blade 3 after abrasion and secondary knife
Piece 4 reconditioning again, the precision of cutter is higher；Further, handle of a knife 1 is integrally formed with cutter hub 2, the accuracy of manufacture to improve cutter
The overall rigidity with cutter.
When being processed using the apex point centering countersink of the present invention, the apex point 32 of main blade 3 is first in out-of-flatness, coarse and hard
Spending and carry out drilling on high black skin, thus avoiding extrusion process, ensureing cutter life, and first on black skin by apex point 32
Hole is drawn at the center of getting out, and can reach the effect of centering, mitigates the vibration of cutter, and provides guide effect for follow-up boring.With knife
Tool continues down-cutting, and black skin ream is put down by cutting portion main cutting edge 312 and auxiliary-blade cutting edge 41 simultaneously.The present invention can be straight
Connect to be applied to and do not hole and out-of-flatness, the black skin that coarse and hardness is high, it is easily manufactured, and cost is relatively low, and has higher
Intensity, high in machining efficiency, long service life.
The description of the aforementioned specific illustrative embodiment to the present invention illustrate that and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can much be changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles of the present invention and its reality should
With so that those skilled in the art be capable of and utilize the present invention various different exemplary and
Various different selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of apex point centering countersink, comprising:
Handle of a knife；
Cutter hub, its rear end is connected with the front end of described handle of a knife；
It is characterized in that, also include:
Main blade, it is arranged at the front end of described cutter hub, and it is in cultrate cutting portion that this main blade includes two, this cutting portion
Knife face protrudes from the front end face of described cutter hub afterwards；
Described two cutting portions are oppositely arranged, so that the two of this two cutting portions main cutting edges are located at described main blade edge respectively
The both sides of thickness direction；
After two of described two cutting portions, knife face collectively constitutes knife face after the master of described main blade, and after this master, the middle part of knife face sets
It is equipped with the apex point of projection, this apex point is corresponding with the axis of described cutter hub；
Two rake faces that the front end of described cutter hub corresponds to described two cutting portions are respectively arranged with two main chip areas.
2. apex point centering countersink according to claim 1 is it is characterised in that described apex point includes two respectively by described two
Knife face after the obliquely raised apex point of the middle upper part of rear knife face knife face to after master of individual cutting portion, knife face after this two apex points
Protruding end is intersected, and forms an apex point chisel edge in intersection, and the midpoint of this apex point chisel edge is located on the axis of described cutter hub；
The corresponding side of main cutting edge of the described cutting portion that after each described apex point, knife face is located with it is the brill of described apex point
Sharp cutting edge.
3. apex point centering countersink according to claim 2 is it is characterised in that two apex point cutting edges of described apex point are in it
In a described cutting portion the plane that is located of rake face on the angle of projection be apex point angle, the size of this apex point angle is
110 °～135 °.
4. apex point according to claim 2 feels relieved countersink it is characterised in that the length of described apex point chisel edge is 1～2mm,
And described apex point chisel edge 0.8～1.5mm higher than the main cutting edge of described cutting portion.
5. apex point centering countersink according to claim 2 is it is characterised in that the front end of described cutter hub is provided with two difference
Apex point chip area corresponding with described two apex point cutting edges, and this two apex point chip areas respectively with described two main chip areas
Connection.
6. apex point according to claim 5 feel relieved countersink it is characterised in that the width of described apex point chip area be 3.5～
4mm.
7. the apex point according to any one of claim 1-6 feels relieved countersink it is characterised in that the front end of described cutter hub is arranged
There is at least one auxiliary-blade group；
Each described auxiliary-blade group includes the auxiliary-blade of two both sides being distributed in described main blade, the main cutting of described auxiliary-blade
The main cutting edge of sword and described cutting portion is in the same plane perpendicular to described cutter hub axis；And each described auxiliary-blade group
The main cutting edge of two described auxiliary-blades is located on the same straight line of axes intersect with described cutter hub；
The rake face that the front end of described cutter hub corresponds to described auxiliary-blade is provided with secondary chip area.
8. apex point centering countersink according to claim 7 is it is characterised in that the front end of described cutter hub is provided with described in one
Auxiliary-blade group, the main cutting edge of two described auxiliary-blades of this auxiliary-blade group is located at the same axes intersect with described cutter hub and hangs down
Directly on the straight line of described main blade.
9. apex point according to claim 7 feels relieved countersink it is characterised in that described main blade and auxiliary-blade pass through welding
Mode is fixedly installed on the front end of described cutter hub.
10. apex point according to claim 7 centering countersink is it is characterised in that described main blade and auxiliary-blade and described knife
Body is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465451.2A CN104227093B (en) | 2014-09-12 | 2014-09-12 | Drill point centering countersinking cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465451.2A CN104227093B (en) | 2014-09-12 | 2014-09-12 | Drill point centering countersinking cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104227093A CN104227093A (en) | 2014-12-24 |
| CN104227093B true CN104227093B (en) | 2017-01-25 |
Family
ID=52216488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410465451.2A Expired - Fee Related CN104227093B (en) | 2014-09-12 | 2014-09-12 | Drill point centering countersinking cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104227093B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790790A (en) * | 2017-12-07 | 2018-03-13 | 中车洛阳机车有限公司 | A kind of anti-countersink of major diameter counterbore for digital control processing |
| CN108927555A (en) * | 2018-09-11 | 2018-12-04 | 浙江甬岭数控刀具有限公司 | Indexable depth drill |
| CN111451554B (en) * | 2020-05-12 | 2021-06-22 | 铁鎯电动工具有限公司 | Positioning device for specifying position of drill bit of electric drill and electric drill |
| CN113696349B (en) * | 2021-08-16 | 2023-05-23 | 嘉兴沃尔德金刚石工具有限公司 | PCD cutting drill bit and processing method using same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204159944U (en) * | 2014-09-12 | 2015-02-18 | 广西玉林达业机械配件有限公司 | Apex point centering countersink |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093395A (en) * | 1977-03-14 | 1978-06-06 | Mcdonnell Douglas Corporation | Drill and combined drill countersink |
| US5487627A (en) * | 1994-07-26 | 1996-01-30 | Mitsubishi Materials Corporation | Counter sink drill |
| SE526506C2 (en) * | 2003-07-03 | 2005-09-27 | Seco Tools Ab Publ | Chip separating machining tools provided with a countersink with a slidable element |
| CN2748206Y (en) * | 2004-11-17 | 2005-12-28 | 哈尔滨量具刃具集团有限责任公司 | Combined type counter-boring chamfering bit for intracavity |
| CN102909612B (en) * | 2011-07-31 | 2014-12-03 | 长城汽车股份有限公司 | Method for grinding self-centering drill bit |
| CN102873378B (en) * | 2012-09-03 | 2014-08-13 | 宁波敏宝卫浴五金水暖洁具有限公司 | Counter sinking cutter facilitating chip removal |
-
2014
- 2014-09-12 CN CN201410465451.2A patent/CN104227093B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204159944U (en) * | 2014-09-12 | 2015-02-18 | 广西玉林达业机械配件有限公司 | Apex point centering countersink |
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| Publication number | Publication date |
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| CN104227093A (en) | 2014-12-24 |
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