CN206677254U - Machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit - Google Patents
Machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit Download PDFInfo
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- CN206677254U CN206677254U CN201720307013.2U CN201720307013U CN206677254U CN 206677254 U CN206677254 U CN 206677254U CN 201720307013 U CN201720307013 U CN 201720307013U CN 206677254 U CN206677254 U CN 206677254U
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Abstract
The structure of a kind of machining titanium alloy of the utility model or carbon fiber sandwich material Integral alloy drill bit, including handle of a knife and cutting portion, cutting portion includes the main cutting edge of end face and the front cutting edge of periphery, the end of main cutting edge is provided with chisel edge, main cutting edge edge is provided with cutting edge chamfered edge, is dregs guiding groove between two neighboring front cutting edge.The beneficial effects of the utility model be solve in process present in existing alloy bit easily produce burr, flange, layering, fritter drop, and the problem of be difficult to ensure that the circularity, cylindricity, precision in hole.The innovation of the Integral alloy drill bit structure, breach key technology, meet the process requirements of main engine plants' titanium alloy/carbon fiber sandwich material, the stability of its product, the crudy of product, tool life have reached domestically leading level, and the combination property of product has reached the technical merit of international like product.
Description
Technical field
The utility model belongs to metal cutting process technical field, is related to machining titanium alloy or carbon fiber sandwich material with whole
Body alloy bit.
Background technology
With the reinforcement of national defense construction, Aviation model engineering increases, and composite is due to lightweight, high intensity, height
The many merits such as modulus, antifatigue, corrosion-resistant, be widely used in the large scale structures such as aircraft, guided missile, satellite, carrier rocket and
On integral structure component, in the numerous composites used, titanium alloy/carbon fiber sandwich material is most widely used.
But titanium alloy is a kind of difficult to machine material, because poor thermal conductivity, modulus of elasticity are small, the cutting ability of material
Difference, the abrasion to cutter are larger；In carbon fiber-titanium interply hybrid composites processing, the processing capacity in hole is very big, drill bit
Cutting ability, directly reaction are the crudy in hole.Because the performance difference for two kinds of materials for forming composite is larger, use
Conventional bit can not take into account the performance for forming two kinds of material compositions when processing.When processing carbon fiber, to avoid splitting, burr and dividing
Layer, it is desirable to cutting edge is sharp, sharp angle is small, and during machining titanium alloy, require that cutting edge has enough intensity, sharp angle big again.
During being processed using existing domestic drill bit, easily generation burr, flange, layering, fritter drop, hole
Circularity, cylindricity, precision are not easy to ensure.Substantial amounts of import has been used in titanium alloy/carbon fiber sandwich material process instigator
Cutter, import cutter disclosure satisfy that processing request, but expensive.
Utility model content
The purpose of this utility model is to provide machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit solve
Burr is easily produced in process present in existing alloy bit, flange, layering, fritter drop, and be difficult to ensure that
The problem of circularity in hole, cylindricity, precision.
The utility model is the technical scheme adopted is that a kind of machining titanium alloy or carbon fiber sandwich material Integral alloy
Drill bit, including handle of a knife and cutting portion, cutting portion include the main cutting edge of end face and the front cutting edge of periphery, the end of main cutting edge
Provided with chisel edge, main cutting edge edge is provided with cutting edge chamfered edge, is dregs guiding groove between two neighboring front cutting edge.
It is of the present utility model to be further characterized in that,
Wherein the drill bit peak angle of main cutting edge is 120 °, and the auxiliary angle of main cutting edge is 70 °, and main cutting edge is provided with 12 °
~18 ° of the first relief angle and 21 °~23 ° of the second relief angle, the cutting edge chamfered edge of main cutting edge is 0.2 × 15 °.
Wherein the chisel edge angle of chisel edge is 40 °~45 °, and chisel edge anterior angle is 6 °~8 °.
Wherein front cutting edge is provided with 20 °~29 ° of helical angle, and the across back of front cutting edge is 0.6Dmm, front cutting edge
Margin width is 0.05D~0.08Dmm, and D is tool blade footpath.
The edge surface of wherein main cutting edge and front cutting edge is coated with 3~4 μm of DLC nano coating.
Wherein the groove angle of dregs guiding groove is 105 °~115 °.
Wherein handle of a knife periphery is provided with screw thread.
The sword footpath of wherein cutting portion is that the sword footpath of cutting portion is 2.2mm~8mm, sword long 16mm~50mm, overall length 36mm~
70mm, core diameter are 0.7mm~2.4mm.
The beneficial effects of the utility model are that solve easily to produce hair in process present in existing alloy bit
Thorn, flange, layering, fritter drop, and the problem of be difficult to ensure that the circularity, cylindricity, precision in hole.The Integral alloy drill bit knot
The innovation of structure, breaches key technology, meets the process requirements of main engine plants' titanium alloy/carbon fiber sandwich material, its product
Stability, the crudy of product, tool life have reached domestically leading level, and the combination property of product has reached international same
The technical merit of class product.
Brief description of the drawings
Fig. 1 is the front view of the utility model machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit；
Fig. 2 is the left view of the utility model machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit；
Fig. 3 is the top view of the utility model machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit；
Fig. 4 is Fig. 1 A direction views；
Fig. 5 is Fig. 2 B-B sectional views；
Fig. 6 is Fig. 2 C-C sectional views；
Fig. 7 is Fig. 5 D-D sectional views.
In figure, 1. handle of a knifes, 2. cutting portions, 3. main cutting edges, 4. front cutting edges, 5. lands, 6. cutting edge chamfered edges, 7. chisel edges,
8. dregs guiding groove, 9. drill bit peak angles, 10. auxiliary angles, 11. first relief angles, 12. second relief angles, 13. chisel edge angles, before 14. chisel edges
Angle, 15. helical angles, 16. groove angles, 17. core diameters.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The front view and left view of a kind of machining titanium alloy of the utility model or carbon fiber sandwich material Integral alloy drill bit
Figure, as illustrated in fig. 1 and 2, including handle of a knife 1 and cutting portion 2, cutting portion 2 include the main cutting edge 3 of end face and the front cutting edge of periphery
4, the end of main cutting edge 3 is provided with chisel edge 7, and the edge of main cutting edge 3 is provided with cutting edge chamfered edge 6, between two neighboring front cutting edge 4
For dregs guiding groove 8.The drill bit peak angle 9 of main cutting edge 3 is 120 °, and the auxiliary angle 10 of main cutting edge 3 is 70 °, and front cutting edge 4 is provided with
20 °~29 ° of helical angle 15, the across back of front cutting edge is 0.6Dmm, and the margin width of front cutting edge is 0.05D~0.08Dmm,
D is tool blade footpath.The edge surface of main cutting edge 3 and front cutting edge 4 is coated with 3~4 μm of DLC nano coating.Handle of a knife 1
Periphery is provided with screw thread.
The top view of a kind of machining titanium alloy of the utility model or carbon fiber sandwich material Integral alloy drill bit, such as Fig. 3
Shown, the sword footpath of cutting portion 2 is 2.2mm~8mm, sword long 16mm~50mm, overall length 36mm~70mm, core diameter 17 be 0.7mm~
2.4mm。
The A direction views of a kind of machining titanium alloy of the utility model or carbon fiber sandwich material Integral alloy drill bit Fig. 1, such as
Shown in Fig. 4, main cutting edge 3 is provided with 12 °~18 ° of the first relief angle 11 and 21 °~23 ° of the second relief angle 12, main cutting edge 3
Cutting edge chamfered edge 6 is 0.2 × 15 °.
The B-B sectional views of a kind of machining titanium alloy of the utility model or carbon fiber sandwich material Integral alloy drill bit Fig. 2
With C-C sectional views, as it can be seen in figures 5 and 6, the chisel edge angle 13 of chisel edge 7 is 40 °~45 °, chisel edge anterior angle 14 is 6 °~8 °.
The D-D sectional views of a kind of machining titanium alloy of the utility model or carbon fiber sandwich material Integral alloy drill bit Fig. 5,
As shown in fig. 7, the groove angle 16 of dregs guiding groove 8 is 105 °~115 °.
Its application method is that the handle of a knife 2 of the drill bit is connected with drill press spindle, is carried out under 2000-5000rpm rotating speeds pair
Titanium alloy/carbon fibre composite related components processing.
By the drill bit exemplar that above parameter makes through multiple trial cut, the multiple material outlet of processing is not stratified, and drilling titanium alloy saves
Power, processes that quality and the precision in hole are qualified, and the abnormalities such as triangle does not occur in the hole on titanium alloy, meets using will
Ask.
Helical angle is designed as 20 °~29 °, and its advantage is larger helical angle, is advantageous to chip removal, while appropriate spiral
Angle will not weaken the intensity of main cutting edge, will not also weaken the rigidity of drill bit.
Drill bit sharp angle is designed as 120 °, and its advantage is that when drill bit sharp angle is more than 118 °, main cutting edge is in concave shaped, works as brill
When head sharp angle is less than 118 °, main cutting edge is in spirogyrate；Drill bit sharp angle is smaller, and the nose angle increase of corner, radiating condition changes
Kind, drill bit sharp angle is smaller, and main cutting edge length is longer, and thickness of cutting is thinning, average deformation increase, and moment of torsion increases during drilling, cuts
The crimp cut is more serious, and the exclusion of cutting is by certain obstacle；The increase of drill bit sharp angle can increase apex point intensity, make horizontal stroke
Sword is firm；Larger cutting force is needed during machining titanium alloy, it is therefore desirable to the larger drill bit of Choice of Bits sharp angle.But carbon is fine
The cutting of dimension is powdered, and drill bit sharp angle is larger, and workpiece layering is easily caused when drill bit pierces, work is easily caused when drill bit drills out
Part peels off.Therefore, drill bit sharp angle is designed as 120 ° of processing requests that disclosure satisfy that titanium alloy/carbon fiber sandwich material.
First relief angle is designed as 18 °, and the second relief angle is designed as 23 ° ± 2 °, and chisel edge angle is designed as 40 °~45 °, before chisel edge
Angle is designed as 6 °~8 °, while the sharpness of chisel edge is ensured, also makes the real work relief angle phase difference of cutting edge everywhere
In the reasonable scope.
A kind of machining titanium alloy of the utility model or carbon fiber sandwich material Integral alloy drill bit, solve existing alloy
Easily generation burr, flange, layering, fritter drop, and are difficult to ensure that the circularity in hole, circle in process present in drill bit
The problem of post degree, precision.The innovation of the Integral alloy drill bit structure, breaches key technology, meets main engine plants' titanium alloy/carbon
The process requirements of fibrous interlayer material, the stability of its product, the crudy of product, tool life have reached domestically leading
Level, the combination property of product have reached the technical merit of international like product.
Claims (8)
1. a kind of machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit, including handle of a knife (1) and cutting portion (2), its
It is characterised by, the cutting portion (2) includes the main cutting edge (3) of end face and the front cutting edge (4) of periphery, main cutting edge (3)
End is provided with chisel edge (7), and main cutting edge (3) edge is provided with cutting edge chamfered edge (6), is to lead between two neighboring front cutting edge (4)
Consider groove (8) to be worth doing.
2. machining titanium alloy according to claim 1 or carbon fiber sandwich material Integral alloy drill bit, it is characterised in that
The drill bit peak angle (9) of the main cutting edge (3) is 120 °, and the auxiliary angle (10) of main cutting edge (3) is 70 °, and main cutting edge (3) is set
12 °~18 ° of the first relief angle (11) and 21 °~23 ° of the second relief angle (12) are equipped with, the cutting edge chamfered edge (6) of main cutting edge (3) is
0.2×15°。
3. machining titanium alloy according to claim 2 or carbon fiber sandwich material Integral alloy drill bit, it is characterised in that
The chisel edge angle (13) of the chisel edge (7) is 40 °~45 °, and chisel edge anterior angle (14) is 6 °~8 °.
4. machining titanium alloy according to claim 3 or carbon fiber sandwich material Integral alloy drill bit, it is characterised in that
The front cutting edge (4) is provided with 20 °~29 ° of helical angle (15).
5. machining titanium alloy according to claim 4 or carbon fiber sandwich material Integral alloy drill bit, it is characterised in that
The edge surface of the main cutting edge (3) and front cutting edge (4) is coated with 3~4 μm of DLC nano coating.
6. machining titanium alloy according to claim 1 or carbon fiber sandwich material Integral alloy drill bit, it is characterised in that
The groove angle (16) of the dregs guiding groove (8) is 105 °~115 °.
7. machining titanium alloy according to claim 1 or carbon fiber sandwich material Integral alloy drill bit, it is characterised in that
Handle of a knife (1) periphery is provided with screw thread.
8. machining titanium alloy according to claim 1 or carbon fiber sandwich material Integral alloy drill bit, it is characterised in that
The sword footpath of the cutting portion (2) is 2.2mm~8mm, and the long 16mm~50mm of sword, overall length 36mm~70mm, core diameter (17) is 0.7mm
~2.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307013.2U CN206677254U (en) | 2017-03-27 | 2017-03-27 | Machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307013.2U CN206677254U (en) | 2017-03-27 | 2017-03-27 | Machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206677254U true CN206677254U (en) | 2017-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720307013.2U Active CN206677254U (en) | 2017-03-27 | 2017-03-27 | Machining titanium alloy or carbon fiber sandwich material Integral alloy drill bit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206677254U (en) |
Cited By (1)
| 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 |
-
2017
- 2017-03-27 CN CN201720307013.2U patent/CN206677254U/en active Active
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 |
| 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 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 724200 mailbox No. nine, Mianxian, Hanzhoung, Shaanxi Patentee after: Shaanxi aeronautical cemented carbide tools Co., Ltd. Address before: 724200 mailbox No. 9, Mianxian, Hanzhoung, Shaanxi Patentee before: Shanxi Aviation Hard Alloy Tool Co. |