CN208662614U - A kind of drill bit for machining titanium alloy big L/D ratio deep hole - Google Patents
A kind of drill bit for machining titanium alloy big L/D ratio deep hole Download PDFInfo
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- CN208662614U CN208662614U CN201820862872.2U CN201820862872U CN208662614U CN 208662614 U CN208662614 U CN 208662614U CN 201820862872 U CN201820862872 U CN 201820862872U CN 208662614 U CN208662614 U CN 208662614U
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- ligament
- cutting
- apex point
- drill bit
- titanium alloy
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Abstract
The utility model relates to a kind of drill bits for machining titanium alloy big L/D ratio deep hole, it includes clamping end and cutting end, apex point is provided at the top of cutting end, the apex point is S type chisel edge apex point, there are four cut ligament for one end setting of the cutting end close to top, cutting ligament forms circle-shaped cutting ligament close to the front end portion of apex point, guarantee to obtain " c-type " chip the utility model has the advantage of used apex point, reduce cutting force, mitigate processing hardening, drill bit uses four ligament design schemes, improves processing stationarity, avoids breaking.
Description
Technical field
The utility model relates to a kind of drill bits for machining titanium alloy big L/D ratio deep hole.
Background technique
Titanium alloy is a kind of higher material of intensity, and when processing is very easy to phenomena such as generating processing hardening, viscous knife, separately
Outside, be originally problem in deep hole machining industry, the deep hole machining of titanium alloy be exactly it is extremely difficult, currently, diameter titanium alloy
Deep hole machining, global Tool Industry have all been difficult to very good solution method.
Summary of the invention
The purpose of this utility model is to provide a kind of drill bits for machining titanium alloy big L/D ratio deep hole.
To achieve the above object, the utility model uses following technical scheme:
A kind of drill bit for machining titanium alloy big L/D ratio deep hole, including clamping end and cutting end, the top of cutting end
It is provided with apex point, the apex point is S type chisel edge apex point, and there are four cut ligament, cutting for one end setting of the cutting end close to top
Ligament forms circle-shaped cutting ligament close to the front end portion of apex point.
The utility model can be improved by following scheme:
Cutting end chip space is formed between adjacent cutting ligament, between cutting end chip space and apex point junction are provided with equidistantly
Every the apex point portion chip space of distribution.
It is provided with behind cutting ligament and is equipped with back-off below.
The core diameter of the cutting end is 1.2 millimeters, and the depth of the back-off is 0.2 millimeter, and the circumferential width of back-off is 2
Millimeter.
Cutting ligament is burnishing-in ligament, and the width of burnishing-in ligament is 0.24 millimeter.
One side chamfering of burnishing-in ligament and form burnishing-in sword.
A negative chamfered edge is formed with along cutting ligament on apex point anterior angle rake face.
The width of the negative chamfered edge is between 0.05 millimeter to 0.07 millimeter, and the angle of negative chamfered edge is -2 degree.
Before drill bit uses coating, rear double passivation technologies and be made.
Utility model has the advantages that 1, used apex point guarantees to obtain " c-type " chip, reduce cutting force, mitigates and add
Work hardening.2, drill bit uses four ligament design schemes, improves processing stationarity, avoids breaking.3, drill bit is using only front end
Dividing has cutting ligament, reduces frictional force when cutting, reduces breaking probability.4, apex point portion chip space uses " waiting spaces " design side
Case, it is ensured that chip discharge is smooth, avoids breaking.5, for drill bit using before coating, it is coarse to improve tool surface for rear double passivation technologies
Degree improves coating adhesion, reduces frictional force when cutting, reduces breaking probability, improves cutter life.
Detailed description of the invention
Fig. 1 is the side structure schematic view of milling cutter in embodiment.
Fig. 2 is the structural schematic diagram of the milling cutter in embodiment under one end visual angle of milling cutter.
Fig. 3 is the structural schematic diagram of the apex point of the milling cutter in embodiment under one end visual angle of milling cutter.
Fig. 4 is the magnifying state figure of I in Fig. 2.
Fig. 5 is the magnifying state figure of II in Fig. 3.
Specific embodiment
As shown in attached drawing 1 to attachment 5, a kind of drill bit for machining titanium alloy big L/D ratio deep hole includes 1 He of clamping end
Cutting end 2.
The top of cutting end 2 is provided with apex point 3, and the apex point 3 is S type chisel edge apex point 3, is set using S type chisel edge apex point 3
Such drill bit is counted, guarantees to obtain " c-type " chip, reduces cutting force, mitigate processing hardening.
There are four cutting ligaments 21 for one end setting of the cutting end 2 close to top, cut ligament 21 close to the front end of apex point 3
Divide and form circle-shaped cutting ligament 21, thus processes stationarity to improve, avoid breaking.
Cutting end chip space 22 is formed between adjacent cutting ligament 21, cutting end chip space 22 and 3 junction of apex point are arranged
The apex point portion chip space for thering is equidistant interval to be distributed.Apex point portion chip space uses " waiting spaces " design scheme, it is ensured that chip discharge is suitable
Freely, breaking is avoided.
It is provided with behind cutting ligament 21 and is equipped with back-off 23 below.In the specific embodiment shown, institute
The core diameter D for stating cutting end 2 is 1.2 millimeters, and the depth H of the back-off 23 is 0.2 millimeter, and the circumferential width L1 of back-off 23 is 2
Millimeter.
Cutting ligament 21 is burnishing-in ligament, and the width L2 of burnishing-in ligament is 0.24 millimeter.One side chamfering of burnishing-in ligament and
Form burnishing-in sword.
A negative chamfered edge 31 is formed with along cutting ligament 21 on 3 anterior angle rake face of apex point.The width L3 of the negative chamfered edge 31 is
Between 0.05 millimeter to 0.07 millimeter, the angle a of negative chamfered edge 31 is -2 degree.
Claims (8)
1. a kind of drill bit for machining titanium alloy big L/D ratio deep hole, including clamping end and cutting end, set at the top of cutting end
It is equipped with apex point, which is characterized in that the apex point is S type chisel edge apex point, and there are four cuttings for one end setting of the cutting end close to top
Ligament, cutting ligament form circle-shaped cutting ligament close to the front end portion of apex point.
2. a kind of drill bit for machining titanium alloy big L/D ratio deep hole according to claim 1, which is characterized in that adjacent
It cuts and forms cutting end chip space between ligament, cutting end chip space and apex point junction are provided with the apex point of equidistant interval distribution
Portion's chip space.
3. a kind of drill bit for machining titanium alloy big L/D ratio deep hole according to claim 2, which is characterized in that cutting
It is provided with behind ligament and is equipped with back-off below.
4. a kind of drill bit for machining titanium alloy big L/D ratio deep hole according to claim 3, which is characterized in that described
The core diameter of cutting end is 1.2 millimeters, and the depth of the back-off is 0.2 millimeter, and the circumferential width of back-off is 2 millimeters.
5. a kind of drill bit for machining titanium alloy big L/D ratio deep hole according to claim 4, which is characterized in that cutting
Ligament is burnishing-in ligament, and the width of burnishing-in ligament is 0.24 millimeter.
6. a kind of drill bit for machining titanium alloy big L/D ratio deep hole according to claim 4, which is characterized in that burnishing-in
One side chamfering of ligament and form burnishing-in sword.
7. deep for machining titanium alloy big L/D ratio to one kind described in claim 6 any claim according to claim 1
The drill bit in hole, which is characterized in that be formed with a negative chamfered edge along cutting ligament on apex point anterior angle rake face.
8. a kind of drill bit for machining titanium alloy big L/D ratio deep hole according to claim 7, which is characterized in that described
The width of negative chamfered edge is between 0.05 millimeter to 0.07 millimeter, and the angle of negative chamfered edge is -2 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820862872.2U CN208662614U (en) | 2018-06-05 | 2018-06-05 | A kind of drill bit for machining titanium alloy big L/D ratio deep hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820862872.2U CN208662614U (en) | 2018-06-05 | 2018-06-05 | A kind of drill bit for machining titanium alloy big L/D ratio deep hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208662614U true CN208662614U (en) | 2019-03-29 |
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ID=65825092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820862872.2U Active CN208662614U (en) | 2018-06-05 | 2018-06-05 | A kind of drill bit for machining titanium alloy big L/D ratio deep hole |
Country Status (1)
| Country | Link |
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| CN (1) | CN208662614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705761A (en) * | 2021-01-14 | 2021-04-27 | 阿斯图精密工具(上海)有限公司 | Universal drill bit for machining steel parts |
-
2018
- 2018-06-05 CN CN201820862872.2U patent/CN208662614U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705761A (en) * | 2021-01-14 | 2021-04-27 | 阿斯图精密工具(上海)有限公司 | Universal drill bit for machining steel parts |
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