CN206597945U - A kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole - Google Patents
A kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole Download PDFInfo
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- CN206597945U CN206597945U CN201621237534.7U CN201621237534U CN206597945U CN 206597945 U CN206597945 U CN 206597945U CN 201621237534 U CN201621237534 U CN 201621237534U CN 206597945 U CN206597945 U CN 206597945U
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- drill bit
- aluminium alloy
- carbon fiber
- laminated plate
- deep hole
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Abstract
The utility model discloses a kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole, main to include blade, chip removal portion and the shank of drill bit, and described chip removal portion is provided with the chip area extended from apex point portion to shank（1）And front cutting edge（6）, described apex point portion is provided with rake face（3）, rear knife face（5）And chisel edge（9）, wherein, the helical angle of the drill bit cutting portion（2）For 30 ± 1 °, the drill point angle of drill bit cutting portion（4）For 88 ° ~ 92 °, drill bit unbearabling thickness（8）For Varying-thickness.The utility model is especially supplied to processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole, and hole depth is more than 10 with aperture ratio:1, hole tolerance ensures in+0.05mm to 0mm.Compared with conventional drill, the drill bit structure is simple, structural parameters are reasonable, machining quality is good, aperture precision is high, and carbon fibre composite peels off the defects such as layering, outlet layering, interlaminar delamination, tear and flash without entrance, honeycomb sandwich layer honeycomb core not unsticking, do not tear, aluminium alloy hole wall surface fairing, surface quality is not less than 3.2 μm.
Description
Technical field
The invention belongs to cutting tool technical field, it is related to a kind of processing carbon fiber sandwich material deep with aluminium alloy laminated plate
The drill bit in hole.
Background technology
The composite largely used at present is generally by carbon fibre composite（CFRP）Lamination is constituted together with aluminium alloy
Material, this light, corrosion resistant characteristic can roll into one the high intensity of metal and composite weight.In the manufacture of these parts
During, connector aperture processed is typically the final link of structural member assembling, and due to pilot hole enormous amount, drilling turns into composite wood
Expect a workload most heavy machining operation in part manufacturing process.
Carbon fiber sandwich material-aluminium alloy lamination drilling, in boring procedure, except the drilling defects of common metal material
（Aperture size error, deviation from circular from, position error etc.）Outside, the also distinctive defect of carbon fibre composite, main performance
Layering, outlet layering, interlaminar delamination, tear and flash etc. are peeled off for entrance, wherein layering is topmost drilling defects, once
Generation will be unable to repair, and cause the loss that can not be retrieved.
In laminated material drilling, it is more than 10 for depth aperture ratio:1 deep hole, substantially increases difficulty of processing again, effect
Rate is low, cost is high, and conventional borehole cutter and processing technology can not meet this High-precision Deep Hole processed of Field of Aviation Manufacturing
Demand.
In existing patent：
1. authorize the U of Publication No. CN 202845870 " one kind processing carbon fibre reinforced composite and titanium alloy laminated plate
Drill bit ", address only the drill bit of carbon fiber and titanium alloy laminated plate, not with regard to carbon fiber sandwich material-aluminium alloy laminated material,
Aperture ratio is more than 10:1 deep hole is studied.
2. the U of Publication No. CN 202336613 " one kind processing carbon fibre composite solid carbide drill " are authorized,
The patent address only the hole machined of carbon fibre composite, not to regard to carbon fiber sandwich material-aluminium alloy laminated material, aperture
Than more than 10:1 deep hole and machining accuracy is studied.
At present temporarily without in processing carbon fiber sandwich material-aluminium alloy laminated material field, aperture ratio is more than 10:1, processing essence
The research for the drilling tool spent in the range of+0.05mm to 0mm.
The content of the invention
Present invention solves the technical problem that being to overcome existing process technology not enough, a kind of processing carbon fiber sandwich is especially provided
The drill bit of material and aluminium alloy laminated plate deep hole.The drill bit structure is simple, and rationally, machining quality is good, aperture for structural parameters
Tolerance ensures that in+0.05mm to 0mm carbon fibre composite peels off layering, outlet layering, interlaminar delamination, tear without entrance
With the defect such as flash, honeycomb sandwich layer honeycomb core not unsticking, do not tear, aluminium alloy hole wall surface fairing, surface quality is not less than 3.2
μm。
The technical scheme is that：
A kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole, including apex point portion, chip removal portion and handle
Portion, described chip removal portion is provided with the chip area extended from apex point portion to shank（1）, described apex point portion is provided with rake face（3）, after
Knife face（5）And chisel edge（9）, described apex point portion is provided with rake face（3）, rear knife face（5）With small chisel edge（7）, rake face with
Knife face is crossed to form main cutting edge afterwards（7）；The helical angle of the drill bit cutting portion（2）For 30 ± 1 °, the drill point angle of drill bit cutting portion（4）
For 88 ° ~ 92 °.
Described chisel edge（9）It is 0.1 ± 0.05mm for size.
Described unbearabling thickness（8）For Varying-thickness.
Described chip removal portion is additionally provided with front cutting edge（6）.
Described relief angle（10）For 17 ± 1 °, the second relief angle（11）For 30 ± 1 °.
A kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole of the present invention, is pressed from both sides to carbon fiber
Core material has unique processing characteristics with aluminium alloy laminated plate, and small chisel edge and less drift angle can reduce axial force, secondary
The design of cutting edge reduces carbon fibre composite entrance and peels off layering, outlet layering, interlaminar delamination, tear and flash phenomenon,
And ensure honeycomb sandwich layer honeycomb core not unsticking, do not tear, it is ensured that the surface roughness and aluminium of carbon fiber composite layer are closed
The machining accuracy of layer gold, improves the surface quality in hole.
It is more than 10 in hole depth and aperture ratio:1, hole tolerance+0.05mm are in 0mm.Compared with conventional drill, the drill bit knot
Structure is simple, and rationally, machining quality is good, and hole tolerance ensures in+0.05mm to 0mm for structural parameters.The hole surface of processing
Quality is not less than 3.2 μm.
Brief description of the drawings
Fig. 1 is the apex point portion front view of the embodiment of the present invention 1.
Fig. 2 is the blade partial sectional view of the embodiment of the present invention 1.
Fig. 3 is the apex point portion partial sectional view of the embodiment of the present invention 1.
Fig. 4 is the top view in the apex point portion of the embodiment of the present invention 1.
Embodiment
The present invention by the following examples, the invention will be further described, but the scope of the invention and not only limit under
State embodiment.
Embodiment 1：
Drill bit includes apex point portion, chip removal portion and shank, and described chip removal portion is provided with the chip removal extended from apex point portion to shank
Groove（1）And front cutting edge（6）, described apex point portion is provided with rake face（3）, rear knife face（5）And chisel edge（9）, wherein, the drill bit
The helical angle of blade（2）For 30 ± 1 °, the drill point angle of drill bit cutting portion（4）For 88 ° ~ 92 °.Apex point portion is provided with rake face（3）, rear knife
Face（5）With small chisel edge（7）, rake face and rear knife face are crossed to form main cutting edge（7）, chisel edge（9）For size be 0.1 ±
0.05mm, unbearabling thickness（8）For Varying-thickness, it is characterised in that there is front cutting edge（6）, described relief angle（10）For 17 ± 1 °,
Second relief angle（11）For 30 ± 1 °.
Small chisel edge and less drift angle can reduce axial force, and the design of front cutting edge reduces carbon fibre composite and entered
Mouthful peel off layering, outlet layering, interlaminar delamination, tear and flash phenomenon, and ensure honeycomb sandwich layer honeycomb core not unsticking, do not tear
Split, it is ensured that the surface roughness of carbon fiber composite layer, and aluminium alloy layer machining accuracy, improve hole surface quality.
Drill bit of the present invention is particularly suitable with processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole, hole depth with
Aperture ratio is more than 10:1, hole tolerance+0.05mm are in 0mm.Compared with conventional drill, the drill bit structure is simple, structural parameters
Rationally, machining quality is good, and hole tolerance ensures in+0.05mm to 0mm.The hole surface quality of processing is not less than 3.2 μm.
Carbon fibre composite peels off the defects, honeycomb sandwich layer honeycomb such as layering, outlet layering, interlaminar delamination, tear and flash without entrance
Core not unsticking, do not tear, aluminium alloy layer machining accuracy is high.
Claims (5)
1. a kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole, including apex point portion, chip removal portion and shank,
Described chip removal portion is provided with the chip area extended from apex point portion to shank（1）, described apex point portion is provided with rake face（3）, rear knife
Face（5）And chisel edge（9）, the rake face and rear knife face are crossed to form main cutting edge（7）；The helical angle of the drill bit cutting portion（2）
For 30 ± 1 °, the drill point angle of drill bit cutting portion（4）For 88 ° ~ 92 °.
2. a kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole according to claim 1, described
Chisel edge（9）It is 0.1 ± 0.05mm for size.
3. a kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole according to claim 1, it is special
Levy and be, the unbearabling thickness of the drill bit（8）For Varying-thickness.
4. a kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole according to claim 1, it is special
Levy and be, chip removal portion is provided with front cutting edge（6）.
5. a kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole according to claim 1, master cuts
Cut the relief angle of sword（10）For 17 ± 1 °, the second relief angle（11）For 30 ± 1 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237534.7U CN206597945U (en) | 2016-11-18 | 2016-11-18 | A kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237534.7U CN206597945U (en) | 2016-11-18 | 2016-11-18 | A kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206597945U true CN206597945U (en) | 2017-10-31 |
Family
ID=60149704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621237534.7U Active CN206597945U (en) | 2016-11-18 | 2016-11-18 | A kind of drill bit for processing carbon fiber sandwich material and aluminium alloy laminated plate deep hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206597945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604663A (en) * | 2019-01-09 | 2019-04-12 | 成都飞机工业（集团）有限责任公司 | A kind of carbon fiber sandwich-high-precision hole forming method of aluminium alloy layer laminate materials |
-
2016
- 2016-11-18 CN CN201621237534.7U patent/CN206597945U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604663A (en) * | 2019-01-09 | 2019-04-12 | 成都飞机工业（集团）有限责任公司 | A kind of carbon fiber sandwich-high-precision hole forming method of aluminium alloy layer laminate materials |
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