CN204277007U - A kind of drill bit of machining titanium alloy - Google Patents
A kind of drill bit of machining titanium alloy Download PDFInfo
- Publication number
- CN204277007U CN204277007U CN201420620726.0U CN201420620726U CN204277007U CN 204277007 U CN204277007 U CN 204277007U CN 201420620726 U CN201420620726 U CN 201420620726U CN 204277007 U CN204277007 U CN 204277007U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- titanium alloy
- cutting edge
- sharp angle
- sword
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- 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
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Abstract
The utility model belongs to field of machining, relates to the drilling technique of difficult-to-machine material, it provides a kind of drill bit of machining titanium alloy.It comprises drillstock and drill body, drill bit part on described drill body forms the different cutting sharp angle of three angles by three groups of cutting edges, the cutting edge of first and second group is main cutting edge, it is arc transition sword between it, in drilling, be conducive to centering, stablize, 3rd group of cutting edge is the transition wiper edges of little sharp angle, and its sharp angle is less than the eccentric distance that there is 0.15---0.30mm at 30 ° ， Transverse sword centers and drill body center.The drill bit that the utility model relates to having for during titanium alloy Drilling operation stability of feeling relieved preferably, the sticky cutter phenomenon in drilling can be avoided, boring can be reduced after aperture shrinkage phenomenon.
Description
Technical field
The utility model belongs to field of machining, relates to the drilling technique of difficult-to-machine material, it provides a kind of drill bit of machining titanium alloy.
Background technology
Boring is one of modal hole machined technique of field of machining, drill bit is the most frequently used drilling tool, because boring is semi-enclosed cutting, for drilling titanium alloy material, in boring procedure, cutting temperature is very high, and the springback capacity after boring is large, drilling cuttings is long and thin, easy bonding and should not getting rid of, bit wear speed is fast, often causes drill bit to be bitten, twist off.
As a kind of difficult-to-machine material, present general enterprises all adopts carbide drill to hole, but for batch production individual, little private owner and its cost of charp tool of larger-diameter Drilling operation higher, therefore still generally high speed steel twist drill bit is adopted, therefore must carry out some to standard fluted drill to improve, to adapt to the feature of titanium alloy boring.
Summary of the invention
The purpose of this utility model is just to provide a kind of drill bit of machining titanium alloy, by the design to bit drills nose part, can overcome the problems such as the bit wear occurred in boring procedure is fast, the rear springback capacity of boring is large, drill bit is bitten, twist off.
The utility model is achieved by the following technical measures: it comprises drillstock and drill body, the stability that the drill bit part of described drill body comprises main cutting edge 1, main cutting edge 2 and wiper edges 3, forms arc transition sword 4 between main cutting edge 1 and main cutting edge 2, Circular Nose Cutting Edge is conducive to when holing, article two, main cutting edge 1 forms the first heavy sharp angle, article two, main cutting edge 2 forms the second heavy sharp angle, article two, wiper edges 3 forms triple sharp angle, triple sharp angle is less and subtract narrow ligament, sticky cutter phenomenon can be avoided, the anterior angle of main cutting edge 2 is less, can improve the intensity of cutting edge.The misalignment drill body center certain distance 6 of Transverse sword, can the amount of expansion of enlarged hole.
First heavy sharp angle of drill bit described in the utility model is 105 °.
Second heavy sharp angle of drill bit described in the utility model is 135 °.
Triple sharp angle of drill bit described in the utility model is 25 °.
The arc radius of the transition arc sword 4 of drill bit described in the utility model is 1/5 of bit diameter.
The distance at drill bit Transverse sword misalignment drill body center described in the utility model is 0.15mm-0.30mm.
The anterior angle of the main cutting edge 2 of drill bit described in the utility model is 8 °, and the width of rake face is 0.5mm-1.0mm.
Drill bit described in the utility model, the first less sharp angle and arc transition sword are processed with stable, certralizing ability to drilling, the little sharp angle of wiper edges, narrow ligament can avoid sticky cutter phenomenon, and the less anterior angle of cutting edge can increase the intensity of cutting edge, are applicable to the drilling processing of titanium alloy material.
Accompanying drawing explanation
Fig. 1 is the front view of the drill bit of machining titanium alloy provided by the utility model.
Fig. 2 is the top view of the drill bit of machining titanium alloy provided by the utility model.
In figure: 1 is the first cutting edge, 2 is the second cutting edge, and 3 is wiper edges, and 4 is transition arc sword, and 5 is the rake face of the second cutting edge, and 6 is the distance at Transverse sword misalignment drill body center.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage cheer and bright, below by detailed description of the invention, and by reference to the accompanying drawings and embodiment, the utility model is described in further detail.
Drill bit generally includes drillstock, drill body, apex point three part, because improvements of the present utility model only relate to apex point, and does not relate to other parts of drill bit, and therefore the utility model is only described in detail apex point.
Refer to Fig. 1, Fig. 2, the utility model discloses a kind of drill bit, comprise apex point, wherein apex point has main cutting edge 1, main cutting edge 2, arc transition sword 4, wiper edges 3.
The sharp angle that main cutting edge 1 is formed is less than normal is conducive to centering, and be 105 ° in the present embodiment, the sharp angle that main cutting edge 2 is formed is larger, be 135 ° in the present embodiment, the anterior angle at this sword place is less, is conducive to the intensity increasing cutting edge, is 8 ° in the present embodiment, and the width of rake face is 1.0mm, the sharp angle that wiper edges is formed is less, is 25 ° in the present embodiment, bores core Chu Transverse sword misalignment drill body center, can increase the amount of expansion in hole, bias is in the present embodiment 0.2mm.
The foregoing is only the utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in technical scope of the present utility model; the apparent change done and substitute, all should be encompassed within protection domain of the present utility model.
Claims (6)
1. the drill bit of a machining titanium alloy, comprise drillstock and drill body, it is characterized in that the drill bit part on described drill body forms three heavy cut sharp angles by two groups of main cutting edges and one group of wiper edges, arc transition sword between two groups of main cutting edges, the anterior angle of second group of main cutting edge is less, Zuan Jian Transverse sword misalignment drill body center.
2. the drill bit of machining titanium alloy according to claim 1, is characterized in: the first heavy sharp angle is 105 °.
3. the drill bit of machining titanium alloy according to claim 1, is characterized in: the second heavy sharp angle is 135 °.
4. the drill bit of machining titanium alloy according to claim 1, is characterized in: triple sharp angle is 25 °.
5. the drill bit of machining titanium alloy according to claim 1, is characterized in: the anterior angle of main cutting edge 2 is 8 °, and the width of rake face is 0.5mm-1.0mm.
6. the drill bit of machining titanium alloy according to claim 1, is characterized in that the distance at: Zuan Jian Transverse sword off-centring drill body center is 0.15mm-0.30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420620726.0U CN204277007U (en) | 2014-10-26 | 2014-10-26 | A kind of drill bit of machining titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420620726.0U CN204277007U (en) | 2014-10-26 | 2014-10-26 | A kind of drill bit of machining titanium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204277007U true CN204277007U (en) | 2015-04-22 |
Family
ID=52860203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420620726.0U Expired - Fee Related CN204277007U (en) | 2014-10-26 | 2014-10-26 | A kind of drill bit of machining titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204277007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020406A (en) * | 2016-02-02 | 2017-08-08 | 李仕清 | Composite screw groove fluted drill |
-
2014
- 2014-10-26 CN CN201420620726.0U patent/CN204277007U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020406A (en) * | 2016-02-02 | 2017-08-08 | 李仕清 | Composite screw groove fluted drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |