CN106270664A - A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim - Google Patents
A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim Download PDFInfo
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- CN106270664A CN106270664A CN201610754152.XA CN201610754152A CN106270664A CN 106270664 A CN106270664 A CN 106270664A CN 201610754152 A CN201610754152 A CN 201610754152A CN 106270664 A CN106270664 A CN 106270664A
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- pcd
- cutting edge
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- main cutting
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim of the present invention belongs to drilling tool technical field in machining, relate to a kind of polycrystalline diamond compact bit for fibre reinforced composites drilling, be particularly suitable for high-performance carbon fibre and strengthen the disposable high-quality of composite, high efficiency processing.This drill bit is multiple-cutting-edge Double Tops angular bit head, and the second main cutting edge number is more than or equal to 2, and when the cutting edge difference of a certain helicla flute both sides, the part cutting edge of these helicla flute both sides is made up of the big blade of PCD small blade and PCD respectively；When the cutting edge of a certain helicla flute both sides is identical, the part cutting edge of these helicla flute both sides is formed by identical PCD blade.This drill bit, by using PCD cutting edge, improves the service life of drill bit, it is to avoid frequent tool changing, reduces use cost, improves working (machining) efficiency.Micro-toothing of distribution on PCD cutting edge, it is possible to preferably remove flash removed, reduces lamination defect, improves the crudy of carbon fibre composite product.
Description
Technical field
The invention belongs to drilling tool technical field in machining, relate to a kind of for machining fiber reinforced composite material
Drilling polycrystalline diamond compact bit, be particularly suitable for high-performance carbon fibre strengthen the disposable high-quality of composite, high efficiency
Processing.
Background technology
Fibrous composite is the composite of a kind of advanced person, has specific strength height, specific stiffness height and is prone to overall manufacture
Etc. excellent combination property, it is widely used in aerospace structure design, construction weight can be alleviated, improve economy.Fiber
Although composite material parts can with global formation, but in order to realize being linked and packed between part, inevitably need a large amount of
Processing connecting hole, such as one frame Boeing-747 aircraft has more than 300 ten thousand connecting holes, and the main processing mode of current connecting hole is for boring
Cut processing.But fibrous composite has anisotropy and interlaminar strength is low, during boring, easily produce layering, burr and tear
Equivalent damage.Additionally, matrix phase poor thermal conductivity, fiber stiffness is big so that tool wear is very fast, and working (machining) efficiency is relatively low.Pin both at home and abroad
Research to fibrous composite tool for cutting machining shows, cutter material high speed steel is not suitable for adding of fibrous composite
Work, hard alloy has preferable intensity and toughness, can substantially meet the process requirements of fibrous composite, but wearability
Poor, the life-span causing carbide tool is relatively low, and the hardness of polycrystalline diamond (being called for short PCD) cutter is high, heat conductivity is good, the longevity
Order higher.
At present, having been for the drill bit of the various geometry of fiber composite material design both at home and abroad, these drill bits have each
Pluses and minuses.K. Sang Pase et al. discloses " rotary cutting tool with PCD cutting blade tip ", number of patent application
201110104545.3, the cutting blade tip of this cutter is made up of polycrystalline diamond, including have a square corner interior part and
One outer portion with outer wedge angle, two drift angles of cutter are relatively big, crudy is poor and the shape of polycrystalline diamond sheet relatively
For complexity, cost of manufacture is higher.Wang Fuji et al. discloses " a kind of efficient special jewel for carbon fibre composite drilling
Head ", number of patent application is 201510408743.7, and this cutter is to have Double Tops angle and the multiple-cutting-edge tool of micro-toothing, and material is
Hard alloy, cutter life is relatively low.
Summary of the invention
The technical barrier that the invention solves the problems that is to overcome the generation low, easy of fibrous composite cutter life in drilling to divide
Layer and the problem of veining defect, invention is a kind of for fibre reinforced composites, especially to high-performance carbon fibre composite
Drilling cutter.This drill bit is main cutting edge and front cutting edge on soldering PCD blade, and PCD blade on hard alloy cutter hub
Connecting portion is distributed the Double Tops angular bit head of micro-toothing.This cutter achieves the raising of cutter life, and carbon fiber is combined
The lifting of material crudy, decreases the generation of layering and veining defect.
The technical solution used in the present invention is a kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim, its feature
Being that this drill bit is soldering PCD blade on hard alloy cutter hub, drill bit is multiple-cutting-edge Double Tops angular bit head, the second main cutting edge number
More than or equal to 2, when the cutting edge difference of a certain helicla flute both sides, the part cutting edge of these helicla flute both sides is little by PCD respectively
The big blade II of blade I and PCD is constituted；When the cutting edge of a certain helicla flute both sides is identical, the part cutting of these helicla flute both sides
Sword is formed by identical PCD blade.
When the cutting edge difference of a certain helicla flute both sides, the first main cutting edge 1 end blade tip of drill bit, the second main cutting
Sword 2 blade tip, front cutting edge 4 front end blade tip are made up of PCD small blade I；Knife face and the second main cutting edge 3 after first main cutting edge 1
Intersection 5 end of rake face, the second main cutting edge 3 blade tip, front cutting edge 4 front end blade tip are made up of the big blade of PCD II；PCD is little
The equal soldering of the big blade of blade I and PCD II is on hard alloy cutter hub.The big blade II of PCD small blade I and PCD is on rake face
Being projected as tetragon, the second main cutting edge 2,3 is respectively a limit of PCD small blade I and PCD big blade II projection quadrilateral,
a1、a2It is respectively the length of side on the second main cutting edge 2,3 limit, place, b1、b2It is respectively on the big blade II of PCD small blade I and PCD secondary
The length of side on limit, place, cutting edge 4 front end, c1For the length of side on the first limit, main cutting edge 1 end place, c on PCD small blade I2For PCD
The length of side on limit, intersection 5 end place, the thickness t of the big blade II of PCD small blade I and PCD on big blade II1、t2It is 0.1-
0.5mm.When the cutting edge of a certain helicla flute both sides is identical, the PCD of these helicla flute both sides blade little, big is identical, and it constitutes shape
Formula and dimensional requirement are identical with above-mentioned a certain helicla flute both sides cutting edge asynchronous PCD small blade I.
The nominal diameter of drill bit is D, the axial length L of main cutting edge=(1.5-3) D, the radical length e of main cutting edge 1
=(0.3-0.7) D, the apex angle α that the first main cutting edge 1 is formed is 90 °-110 °, the second vertex angle theta that the second main cutting edge 2 is formed1
It is 20 °-40 °, the second vertex angle theta that the second main cutting edge 3 is formed2Being 20 °-40 °, micro-tooth original position is positioned on PCD blade
The position of two main cutting edges, the axial distance s between micro-tooth original position and apex point is less than main cutting edge axial distance L, and difference is
1-4mm。
Micro-toothing being distributed on the big blade II of PCD small blade I and PCD, micro-toothing is positioned at the second main cutting edge 2,3 end
End and front cutting edge 4 initial position, micro-toothing is made up of micro-tooth 8 and teeth groove 9, and micro-tooth and teeth groove helically divide around drill axis
Cloth, helixangleβ is the acute angle more than 60 °, and micro-number of teeth amount is 3-7, micro-tooth width n and PCD blade front cutting edge 4 place, place
The length of side ratio on limit is less than 0.3, and micro-tooth width n is more than 0.5mm, space width m and PCD blade front cutting edge 4 place, place
The length of side ratio on limit is less than 0.3, and space width m is more than 0.3mm, and gullet depth is that k is at least 0.8mm, and micro-tooth depth should be little
The radical length of tooth slot position is had in PCD blade.
The invention have the advantages that a kind of PCD drill bit with the micro-toothing of flip Trim, by using PCD to cut
Sword, improve the service life of drill bit, it is to avoid frequent tool changing, reduces use cost, improves working (machining) efficiency.PCD cuts
Micro-toothing of distribution on sword, it is possible to preferably remove flash removed, reduces lamination defect, improves adding of carbon fibre composite product
Working medium amount.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of PCD drill bit with the micro-toothing of flip Trim；Fig. 2 is that one has flip Trim
The side view of the PCD drill bit of micro-toothing；Fig. 3 is the partial enlarged view of micro-toothing in Fig. 1.
Wherein: 1-the first main cutting edge, the second less with the first main cutting edge 1 angle in 2-top view main cutting
Sword, the second main cutting edge bigger with the first main cutting edge 1 angle in 3-top view, 4-front cutting edge, 5-the first main cutting
Knife face and the intersection of the second main cutting edge 3 rake face, 6-drill axis, the micro-Tooth spiral of 7-, the micro-tooth of 8-, 9-tooth after sword 1
Groove, I-PCD small blade, the II big blade of-PCD, a1The length on the second limit, main cutting edge 2 place of-PCD small blade I, b1-
The length on limit, front cutting edge 4 place, c on PCD small blade I1The length on the first limit, main cutting edge 1 place on-PCD small blade I,
a2The length on the second limit, main cutting edge 3 place of the big blade of-PCD II, b2Limit, front cutting edge 4 place on the big blade of-PCD II
Length, c2The length on limit, intersection 5 place, t on the big blade of-PCD II1The thickness of-PCD small blade I, t2The thickness of the big blade of-PCD II
Degree, D-drill bit nominal diameter, the axial length of L-main cutting edge, the axial distance between s-micro-toothing original position and apex point,
The radical length of e-the first main cutting edge 1, m-space width, the micro-tooth width of n-, k-gullet depth, α-main cutting edge 1 is formed
The first drift angle, θ1The second drift angle that-the second main cutting edge 2 is formed, θ2The second drift angle that-the second main cutting edge 3 is formed, β-micro-
Tooth spiral is to angle.
Detailed description of the invention
Being embodied as of the present invention is described in detail below in conjunction with the accompanying drawings with technical scheme.
A kind of PCD drill bit with the micro-toothing of flip Trim as shown in Figure 1, Figure 2, Figure 3 shows, cutting of its helicla flute both sides
Cutting sword different, the first main cutting edge 1 end blade tip of drill bit, the second main cutting edge 2 blade tip, front cutting edge 4 front end blade tip are by PCD
Small blade I is constituted, and PCD small blade I is less with the first main cutting edge 1 angle in a top view；After first main cutting edge 1 knife face with
Intersection 5 end of the second main cutting edge 3 rake face, the second main cutting edge 3 blade tip, front cutting edge 4 front end blade tip are by the big blade of PCD
II is constituted, and the big blade of PCD II is bigger with the first main cutting edge 1 angle in a top view；The big blade II of PCD small blade I and PCD is equal
Soldering is on hard alloy cutter hub.The big blade II of PCD small blade I and PCD is projected as tetragon on rake face, and second main cuts
Cut sword 2,3 and be respectively a limit of PCD small blade I and PCD big blade II projection quadrilateral, a1For 12mm, a2For 7.9mm, b1、
b2For the length of side on limit, place, respectively PCD small blade I and PCD big blade II front cutting edge 4 front end, for 5.5mm, c1For PCD pocket knife
The length of side on the first limit, main cutting edge 1 end place on sheet I, for 1.3mm, c2For limit, intersection 5 end place on the big blade of PCD II
The length of side, for the thickness t of the big blade II of 2.3mm, PCD small blade I and PCD1、t2It is 0.1mm.
The nominal diameter D of drill bit is 7.95mm, and the axial length L of main cutting edge is 12.8mm, and the radial direction of main cutting edge 1 is long
Degree e is 3.96mm, and the apex angle α that the first main cutting edge 1 is formed is 100 °, the second vertex angle theta that the second main cutting edge 2 is formed1For
20 °, the second vertex angle theta that the second main cutting edge 3 is formed2Being 20 °, micro-tooth original position is positioned at the second main cutting edge, and micro-tooth initiates
Axial distance s between position and apex point is less than main cutting edge axial distance L, for 12mm.
Micro-toothing being distributed on the big blade II of PCD small blade I and PCD, micro-toothing is positioned at the second main cutting edge 2,3 end
End and front cutting edge 4 initial position, micro-toothing is made up of micro-tooth 8 and teeth groove 9, and micro-tooth is in spiral distribution around drill axis, spiral shell
Swing angle β is 85 °, and micro-number of teeth amount is 3, and facewidth n is 1mm, and groove width m is 0.78mm, gullet depth be k be that 0.82mm is less than PCD
Blade has the radical length of tooth slot position.
This drill bit improves service life of drill bit by using PCD cutting edge, it is to avoid frequent tool changing, reduces use
Cost, improves working (machining) efficiency.And micro-toothing of distribution on PCD cutting edge, improve the processing of carbon fibre composite product
Quality, it is possible to preferably remove flash removed, reduces lamination defect.
Claims (1)
1. having a polycrystalline diamond compact bit for the micro-toothing of flip Trim, it is characterized in that, this drill bit is at carbide cutter tool
Soldering PCD blade on body, drill bit is multiple-cutting-edge Double Tops angular bit head, and the second main cutting edge number is more than or equal to 2, when a certain helicla flute two
During the cutting edge difference of side, the part cutting edge of these helicla flute both sides is respectively by PCD small blade (I) and PCD big blade (II) structure
Become；When the cutting edge of a certain helicla flute both sides is identical, the part cutting edge of these helicla flute both sides is by identical PCD blade structure
Become；
When the cutting edge difference of a certain helicla flute both sides, the first main cutting edge (1) the end blade tip of drill bit, the second main cutting edge
(2) blade tip, front cutting edge (4) front end blade tip are made up of PCD small blade (I)；First main cutting edge (1) knife face afterwards and the second master cut
Cut intersection (5) end of sword (3) rake face, the second main cutting edge (3) blade tip, front cutting edge (4) front end blade tip by the big blade of PCD
(II) constitute；PCD small blade (I) and the big blade of PCD (II) all solderings are on hard alloy cutter hub；PCD small blade (I) and PCD
Big blade (II) is projected as tetragon on rake face, and the second main cutting edge (2), (3) are respectively PCD small blade (I) and PCD
One limit of big blade (II) projection quadrilateral, (a1)、(a2) it is respectively the second main cutting edge (2), the length of side on (3) limit, place,
(b1)、(b2) it is respectively PCD small blade (I) and the length of side on the upper limit, front cutting edge (4) place, front end of the big blade of PCD (II), (c1) it is
The length of side on limit, PCD small blade (I) upper first main cutting edge (1) end place, (c2) it is intersection (5) end on the big blade of PCD II
The length of side on limit, place, PCD small blade (I) and the thickness (t of the big blade of PCD (II)1)、(t2) it is 0.1-0.5mm；When a certain spiral shell
When the cutting edge of spin slot both sides is identical, the PCD blade of these helicla flute both sides is identical；
Micro-toothing is distributed on PCD small blade (I) and the big blade of PCD (II), micro-toothing be positioned at the second main cutting edge (2),
(3) end and front cutting edge (4) initial position, micro-toothing is made up of micro-tooth (8) and teeth groove (9), and micro-tooth and teeth groove are around drill bit
Axis is in spiral distribution, and helical angle (β) is the acute angle more than 60 °, and micro-number of teeth amount is 3-7, micro-tooth width (n) and place PCD
The length of side ratio on blade front cutting edge (4) limit, place is less than 0.3, and micro-tooth width (n) is more than 0.5mm, space width (m) and institute
Length of side ratio on PCD blade front cutting edge (4) limit, place is less than 0.3, and space width (m) is more than 0.3mm, and gullet depth is
K () is at least 0.8mm, micro-tooth depth should be less than PCD blade the radical length of tooth slot position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754152.XA CN106270664A (en) | 2016-08-30 | 2016-08-30 | A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610754152.XA CN106270664A (en) | 2016-08-30 | 2016-08-30 | A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106270664A true CN106270664A (en) | 2017-01-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610754152.XA Pending CN106270664A (en) | 2016-08-30 | 2016-08-30 | A kind of polycrystalline diamond compact bit with the micro-toothing of flip Trim |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106270664A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108608040A (en) * | 2018-05-10 | 2018-10-02 | 大连理工大学 | For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling |
| CN109262738A (en) * | 2018-10-16 | 2019-01-25 | 大连理工大学 | It is a kind of with return hook sword manual drill bit |
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| US20030103821A1 (en) * | 2001-12-04 | 2003-06-05 | Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress Kg | Tool for the precision machining of surfaces |
| GB2436723A (en) * | 2006-04-01 | 2007-10-03 | Technicut Ltd | Drill bit with polycrystalline diamond inserts |
| CN101157150A (en) * | 2007-11-09 | 2008-04-09 | 常熟万克精密工具有限公司 | Poly blade hard metal drill |
| CN101157149A (en) * | 2007-11-23 | 2008-04-09 | 上海美恩精密工具有限公司 | A superhard material drilling bit |
| CN102773528A (en) * | 2011-05-11 | 2012-11-14 | 钴碳化钨硬质合金公司 | Improved rotary cutting tool having PCD cutting tip |
| CN203621576U (en) * | 2013-04-23 | 2014-06-04 | 深圳市航天精密刀具有限公司 | Diamond bit used for drilling titanium alloy and carbon fiber layered materials |
| CN104999118A (en) * | 2015-07-13 | 2015-10-28 | 大连理工大学 | High-efficiency special drilling head for drilling holes in carbon fiber composite material |
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2016
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030103821A1 (en) * | 2001-12-04 | 2003-06-05 | Mapal Fabrik Fur Prazisionswerkzeuge Dr. Kress Kg | Tool for the precision machining of surfaces |
| GB2436723A (en) * | 2006-04-01 | 2007-10-03 | Technicut Ltd | Drill bit with polycrystalline diamond inserts |
| CN101157150A (en) * | 2007-11-09 | 2008-04-09 | 常熟万克精密工具有限公司 | Poly blade hard metal drill |
| CN101157149A (en) * | 2007-11-23 | 2008-04-09 | 上海美恩精密工具有限公司 | A superhard material drilling bit |
| CN102773528A (en) * | 2011-05-11 | 2012-11-14 | 钴碳化钨硬质合金公司 | Improved rotary cutting tool having PCD cutting tip |
| CN203621576U (en) * | 2013-04-23 | 2014-06-04 | 深圳市航天精密刀具有限公司 | Diamond bit used for drilling titanium alloy and carbon fiber layered materials |
| CN104999118A (en) * | 2015-07-13 | 2015-10-28 | 大连理工大学 | High-efficiency special drilling head for drilling holes in carbon fiber composite material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108608040A (en) * | 2018-05-10 | 2018-10-02 | 大连理工大学 | For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling |
| CN108608040B (en) * | 2018-05-10 | 2020-04-07 | 大连理工大学 | Vertical-edge double-step micro-tooth cutter for high-quality hole making of composite material and laminated structure of composite material |
| CN109262738A (en) * | 2018-10-16 | 2019-01-25 | 大连理工大学 | It is a kind of with return hook sword manual drill bit |
| CN109262738B (en) * | 2018-10-16 | 2020-01-24 | 大连理工大学 | Hand drill with back hook edge |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |
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