CN207358223U - The drill bit with straight sword type blade for carbon fibre reinforced composite - Google Patents
The drill bit with straight sword type blade for carbon fibre reinforced composite Download PDFInfo
- Publication number
- CN207358223U CN207358223U CN201721426156.1U CN201721426156U CN207358223U CN 207358223 U CN207358223 U CN 207358223U CN 201721426156 U CN201721426156 U CN 201721426156U CN 207358223 U CN207358223 U CN 207358223U
- Authority
- CN
- China
- Prior art keywords
- cutting
- reamer
- angle
- edge
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model discloses a kind of drill bit with straight sword type blade for carbon fibre reinforced composite, including drill main body, two helicla flutes are processed on the drill main body outer circumference surface vertically, the rotation direction of two helicla flutes is identical, two helicla flutes connect blade respectively on drill main body head, blade includes two cutting edges, blade is divided into apex point portion, reamer, multiple-cutting-edge tip and inclination angle reamer from front to back, apex point portion, reamer, the cutting edge of multiple-cutting-edge tip and inclination angle reamer are mutually misaligned straight line, and are sequentially connected；Two cutting edges are connected by chisel edge at apex point portion.The utility model reduces drilling defect, processing efficiency, processing quality and cutter life is improved, so as to improve the qualification rate of product it is possible to prevente effectively from appearance phenomena such as burr in carbon fibre reinforced composite drilling process, layering.
Description
Technical field
The utility model belongs to drilling tool technical field, more particularly to a kind of for carbon fibre reinforced composite
Drill bit with straight sword type blade.
Background technology
Carbon fibre reinforced composite（CFRP）With the excellent properties such as specific strength is high, specific modulus is big, in aerospace height
New technical field has broad application prospects.Currently, American-European large aircraft organism material just from based on aluminium alloy to compound
Material is main transition, 50wt% composite materials dosage by be future aircraft starting point.In assembly connection, it is necessary to carry out substantial amounts of
Hole machined, such as a frame Boeing-747 fighter plane have more than nearly 300 ten thousand connecting holes.But since there is CFRP anisotropy and interlayer to connect
The features such as connecing intensity difference, the manufacturing deficiencies such as layering, burr are easily produced using normal drill bit drilling in hole entry and exit side.And divide
Layer seriously affects material property, it will cause stress concentration and crack propagation, reduce performance and the company of composite element
Intensity is connect, is even scrapped.In addition, to avoid the influence of burr, it is necessary to remove burr by deburring operation, so as to influence
Processing efficiency and processing cost.These seriously restrict popularization of the CFRP materials in aerospace field high-end product with answering
With.Therefore, it is necessary to be improved to existing drill bit structure, it is set effectively to be avoided in carbon fibre reinforced composite drilling point
Layer, the generation of burr.
The content of the invention
In order to solve the above-mentioned technical problem, the utility model provides a kind of straight for having for carbon fibre reinforced composite
The drill bit of blade type blade, to solve easy delamination in carbon fibre reinforced composite drilling process, generate the problems such as burr, so as to carry
High carbon fibre reinforced composite drilling processing quality and processing efficiency.
The technical solution adopted in the utility model is：It is a kind of that there is straight sword type blade for carbon fibre reinforced composite
Drill bit, including drill main body, processes two helicla flutes, described two spiral shells on the drill main body outer circumference surface vertically
The rotation direction of spin slot is identical, and two helicla flutes connect blade on drill main body head respectively, and blade includes two cutting edges, and blade is in the past
It is divided into apex point portion, reamer, multiple-cutting-edge tip and inclination angle reamer, apex point portion, reamer, multiple-cutting-edge tip and inclination angle reamer backward
Cutting edge for mutually misaligned straight line, and being sequentially connected, the angle between apex point portion cutting edge and reamer cutting edge is in blunt
Angle, cutting edge and the inclination angle reamer of angle and multiple-cutting-edge tip between the cutting edge of multiple-cutting-edge tip and the cutting edge of reamer
Angle between cutting edge is acute angle；Two cutting edges are connected by chisel edge at apex point portion.
In the above-mentioned drill bit with straight sword type blade for carbon fibre reinforced composite, the top angle in apex point portion is
110 °~120 °, the top angle of reamer is 14 °~20 °.
In the above-mentioned drill bit with straight sword type blade for carbon fibre reinforced composite, the cutting edge of multiple-cutting-edge tip
Angle with drill main body axis is 60 °~85 °.
In the above-mentioned drill bit with straight sword type blade for carbon fibre reinforced composite, the cutting of inclination angle reamer
There is angle, which is less than the half at the top angle of reamer between sword and drill main body axis.
In the above-mentioned drill bit with straight sword type blade for carbon fibre reinforced composite, two on drill main body
The normal rake of cutting edge is 0 °~15 °, and normal relief angle is 10 °~20 °.
In the above-mentioned drill bit with straight sword type blade for carbon fibre reinforced composite, the chisel edge width is
0.5~1.5mm, the inclination angle of chisel edge is 50 °~60 °.
In the above-mentioned drill bit with straight sword type blade for carbon fibre reinforced composite, the blade material is
Polycrystalline diamond, is welded on the head of drill main body；Or blade is integral structure with drill main body, using hard alloy system
Into.
Compared with prior art, the beneficial effects of the utility model are：
1. the drill main body outer circumference surface of the utility model is equipped with two small inclination helicla flutes, can be in boring procedure
Chip is smoothly discharged.
2. blade material of the utility model on the head of drill main body is polycrystalline diamond, cutting force can be reduced, is carried
High cutter wear-resisting property, improves drilling quality.
3. the blade of the utility model includes two cutting edges, blade is divided into apex point portion, reamer, multiple-cutting-edge tip and inclination angle
Reamer, passes through the different division of labor of each position during drilling, it is possible to achieve interim goes flash removed, layering, reaches nothing
Burr and layering drilling effect, wherein, the function in apex point portion is smoothly to pierce workpiece, while plays the function of centering, but this
When can cause drilling burr, layering preliminarily form；The function of reamer is to make aperture further expand, but the energy in reaming
Ensure that burr, the degree of layering do not deteriorate；The function of multiple-cutting-edge tip is before being ultimately formed in hole, by the fiber energy quilt on hole periphery
Property cut, while ensure that burr, the degree of layering are smaller than the reaming stage；The function of inclination angle reamer is to make aperture further
Final aperture is extended to, while utilizes " micro- sword cutting " principle further to reduce the degree of burr, layering, is finally reached removal
Burr and the purpose of layering, improve drilling quality.
4. two cutting edges of the blade of the utility model are connected by chisel edge, the setting of chisel edge may insure that drill bit smoothly bores
Enter composite material.
Brief description of the drawings
Fig. 1 is the structure chart of the utility model.
Fig. 2 is the B direction views in Fig. 1.
Fig. 3 is the A-A sectional views in Fig. 1.
Fig. 4 is the structure chart at the cutting edge of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Fig. 1~2, the utility model includes drill main body 1, on 1 outer circumference surface of drill main body vertically
The helicla flute 2 of two small inclinations is processed, the helicla flute 2 is left-handed, and helicla flute 2 and the angle of axis are helical angleδ,
The helical angleδFor 0~15 °, chip can smoothly be discharged, improve stock-removing efficiency and chip removal ability.
Two helicla flutes 2 connect blade 11 on drill main body head respectively, and the material of blade 11 is polycrystalline diamond, is welded on
1 head of drill main body.It can also be that blade 11 is integral structure with drill main body 1, be made of hard alloy.Blade 11 wraps
Containing two cutting edges, blade 11 is divided into apex point portion I, reamer II, multiple-cutting-edge tip III and inclination angle reamer IV, apex point from front to back
Portion I, reamer II, the cutting edge 4,5,6,7 of multiple-cutting-edge tip III and inclination angle reamer IV are mutually misaligned straight line, and connect successively
Connect.Angle between the cutting edge 4 in apex point portion I and the cutting edge 5 of reamer II in obtuse angle, the cutting edge 6 of multiple-cutting-edge tip III with
Between the cutting edge 6 of angle and multiple-cutting-edge tip III and the cutting edge 7 of inclination angle reamer IV between the cutting edge 5 of reamer II
Angle is acute angle.Two cutting edges are connected by chisel edge 3 at apex point portion I.The rear knife face of the chisel edge 3 and wherein one cutting edge
It is tangent, the apex point profile parallel with another cutting edge.
Blade 11 is divided into apex point portion I, reamer II, multiple-cutting-edge tip III and inclination angle reamer IV from front to back, passes through each portion
Divide the different division of labor during drilling, it is possible to achieve interim goes flash removed, layering, reaches impulse- free robustness and is layered drilling effect
Fruit.
Apex point portion I can make drill bit smoothly pierce workpiece when drilling starts, while play the role of centering, but at this time can
Cause drilling burr, layering preliminarily form.Reamer II can be such that aperture is further extended, but can guarantee that hair in reaming
Thorn, the degree of layering do not deteriorate, and efficiently control burr, the generation of layering.Before multiple-cutting-edge tip III finally shapes in hole（Aperture is
Before being up to final size）, can be by the fiber on hole periphery first by property cut, eliminate hole peripheral fiber pulls effect, can
To ensure that burr, the degree being layered are smaller than the reaming stage, which make use of drill bit " first to cut pusher " in drilling process
Drilling principle.Inclination angle reamer IV can make aperture further be extended to final aperture, while utilize " micro- sword cutting " principle
The degree of burr, layering is further reduced, is finally reached the purpose of flash removed and layering.
As shown in Figure 2,3, in the utility model, the width of chisel edge 3ΔLFor 0.5~1.5mm, the inclination angle of chisel edge 3ζFor
50 °~60 °, it can effectively reduce drilling axial force when piercing.The thickness of blade 11ΔtFor 0.8~1mm, cutter can be improved
Wear-resisting property and further reduction burr, layering, can further effectively improve drilling quality and cutter life.On drill main body 1
Two cutting edges normal rakeγ 0For 0 °~15 °, normal relief angleα 0For 10 °~20 °, cutting force can be effectively reduced.
As shown in figure 4, in the utility model, the top angle in apex point portion I（2α）Scope, can be effective between 110 °~120 °
Reduce layering, the generation of burr.The top angle of reamer II（2β）Scope is between 14 °~20 °, it can be ensured that what aperture was extended
Burr, degeee of stratification do not deteriorate further at the same time.The cutting edge 6 of multiple-cutting-edge tip III and the angle of 1 axis of drill main bodyθScope exists
Between 60 °~85 °, it can be ensured that drilling axial force is not excessive, while ensures the reasonable transition of physical dimension.Inclination angle reamer IV
The angle of cutting edge 7 and 1 axis of drill main bodyγScope is between 5 °~10 °, it can be ensured that burr, degeee of stratification are dropped as far as possible
It is low.
The utility model is applicable under various cutting parameters, especially in the slow-speed of revolution, low feeding（Such as 2000 rpm of the speed of mainshaft,
105 mm/min of feed speed）Under the conditions of drilling process extremely stablize, therefore, be very suitable for live drilling processing, there is pole
Good popularization.
Claims (7)
1. a kind of drill bit with straight sword type blade for carbon fibre reinforced composite, including drill main body（1）, it is described
Drill main body（1）Two helicla flutes are processed on outer circumference surface vertically（2）, two helicla flutes（2）Rotation direction it is identical, two
Helicla flute（2）Blade is connected respectively on drill main body head（11）, blade includes two cutting edges, it is characterized in that：Blade is in the past
It is divided into apex point portion backward（Ⅰ）, reamer（Ⅱ）, multiple-cutting-edge tip（Ⅲ）With inclination angle reamer（Ⅳ）, apex point portion（Ⅰ）, reamer
（Ⅱ）, multiple-cutting-edge tip（Ⅲ）With inclination angle reamer（Ⅳ）Cutting edge be mutually misaligned straight line, and being sequentially connected, apex point portion
（Ⅰ）Cutting edge and reamer（Ⅱ）Angle between cutting edge in obtuse angle, multiple-cutting-edge tip（Ⅲ）Cutting edge and reamer（Ⅱ）
Cutting edge between angle and multiple-cutting-edge tip（Ⅲ）Cutting edge and inclination angle reamer（Ⅳ）Cutting edge between angle be
Acute angle；Apex point portion（Ⅰ）Two cutting edges in place pass through chisel edge（3）Connection.
2. the drill bit with straight sword type blade according to claim 1 for carbon fibre reinforced composite, its feature
It is：Apex point portion（Ⅰ）Top angle be 110 °~120 °, reamer（Ⅱ）Top angle be 14 °~20 °.
3. the drill bit with straight sword type blade according to claim 1 for carbon fibre reinforced composite, its feature
It is：Multiple-cutting-edge tip（Ⅲ）Cutting edge（6）With drill main body（1）The angle of axis is 60 °~85 °.
4. the drill bit with straight sword type blade according to claim 1 for carbon fibre reinforced composite, its feature
It is：Inclination angle reamer（Ⅳ）Cutting edge（7）With drill main body（1）There is angle between axis（γ）, which, which is less than, expands
Hole portion（Ⅱ）Top angle half.
5. the drill bit with straight sword type blade according to claim 1 for carbon fibre reinforced composite, its feature
It is：Drill main body（1）On two cutting edges normal rake（γ 0）For 0 °~15 °, normal relief angle（α 0）For 10 °~20 °.
6. the drill bit with straight sword type blade according to claim 1 for carbon fibre reinforced composite, its feature
It is：The chisel edge width（ΔL）For 0.5~1.5mm, the inclination angle of chisel edge（ζ）For 50 °~60 °.
7. the drill bit with straight sword type blade according to claim 1 for carbon fibre reinforced composite, its feature
It is：The blade（11）Material is polycrystalline diamond, is welded on drill main body（1）Head；Or blade（11）With brill
Head main body（1）Structure is integral, is made of hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426156.1U CN207358223U (en) | 2017-10-31 | 2017-10-31 | The drill bit with straight sword type blade for carbon fibre reinforced composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426156.1U CN207358223U (en) | 2017-10-31 | 2017-10-31 | The drill bit with straight sword type blade for carbon fibre reinforced composite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207358223U true CN207358223U (en) | 2018-05-15 |
Family
ID=62345655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721426156.1U Expired - Fee Related CN207358223U (en) | 2017-10-31 | 2017-10-31 | The drill bit with straight sword type blade for carbon fibre reinforced composite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207358223U (en) |
-
2017
- 2017-10-31 CN CN201721426156.1U patent/CN207358223U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107717020A (en) | Carbon fibre reinforced composite target drill with straight sword type blade | |
| CN102211218B (en) | Diamond coated cutter and application thereof in processing of fiber composite material | |
| CN203972970U (en) | A kind of machining PCD cutter | |
| CN206702276U (en) | One kind becomes helicla flute double tapered angle laminated construction drilling integrated tool | |
| CN206083948U (en) | Bipyramid angle chip breaking drill bit | |
| CN202741845U (en) | Diamond straight shank forming reamer for processing step oil holes of gear pump | |
| CN106216743A (en) | A kind of double tapered angle chip-breaking drill bit | |
| CN108608040A (en) | For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling | |
| CN107008952A (en) | A kind of lamination thin plate drilling cutter with bradawl and counter boring chip breaking structure | |
| CN207709958U (en) | Bore milling ream integrated cutter | |
| CN107030319B (en) | A kind of milling brill compound cutting tool | |
| CN208341759U (en) | A kind of depth lumen pore process tool | |
| CN108637606B (en) | Shaft processing technology with deep lumen pore | |
| CN104338977B (en) | For carrying out the drill bit of hole machined to fibrous composite | |
| CN107717021A (en) | Carbon fibre reinforced composite target drill with Circular Nose Cutting Edge blade | |
| CN104475826A (en) | Diamond sleeve grinding cutter suitable for drill sleeve guide | |
| CN214392488U (en) | Annular cutter for drilling composite material | |
| CN207358223U (en) | The drill bit with straight sword type blade for carbon fibre reinforced composite | |
| CN210254408U (en) | A crisscross sword bores and mills combination cutting tool for processing carbon fiber reinforced composite | |
| CN207415527U (en) | For the drill bit with Circular Nose Cutting Edge blade of carbon fibre reinforced composite | |
| CN108453271A (en) | A kind of depth lumen pore process tool | |
| CN101862846A (en) | Integral hard alloy scaled drill | |
| CN116373027A (en) | Drill bit capable of preventing layering debonding and burr defects | |
| CN102441697A (en) | Combined composite drill and processing technology thereof | |
| CN206105048U (en) | Diamond reamer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20201031 |