CN204486906U - The hole push broach of D shape - Google Patents
The hole push broach of D shape Download PDFInfo
- Publication number
- CN204486906U CN204486906U CN201420848518.6U CN201420848518U CN204486906U CN 204486906 U CN204486906 U CN 204486906U CN 201420848518 U CN201420848518 U CN 201420848518U CN 204486906 U CN204486906 U CN 204486906U
- Authority
- CN
- China
- Prior art keywords
- push broach
- pilot
- shape hole
- tapering
- teeth
- 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
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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The utility model discloses a kind of D shape hole push broach, comprise push broach body, described push broach body is provided with successively transition tapering, front pilot, cutting portion, rear pilot and butt handle, the cross section of described push broach body is D shape and comprises arc-shaped side and straight flange, the external diameter being positioned at the arc-shaped side of the push broach body of described front pilot, cutting portion and rear pilot is equal, and the straight flange of described cutting portion is provided with the cutting teeth near described front pilot and the finishing teeth near described rear pilot.D shape hole push broach of the present utility model, be set to equal by the arc-shaped side external diameter of the push broach body by front pilot, cutting portion and rear pilot, and cutting teeth and finishing teeth are set on the straight flange of cutting portion, so, the flat sidewall in push broach processing D shape hole, D shape hole of the present utility model can be utilized, and there is the advantage that machining accuracy is high, working (machining) efficiency is high.
Description
Technical field
The utility model belongs to broaching tool technical field, is specifically related to a kind of D shape hole push broach.
Background technology
In prior art, the processing method in D shape hole generally has the methods such as NC milling, punch process and linear cutter, although these processing methods can meet the processing request in D shape hole to a certain extent, but, there is working (machining) efficiency low, the defects such as machining accuracy is not enough, and after D shape hole machined completes, adopt existing mode to be all difficult to realize to the fine finishining of D shape hole flat sidewall.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of D shape hole push broach, can the flat sidewall in machining D shape hole, has the advantage that working (machining) efficiency is high and precision is high.
For achieving the above object, the utility model provides following technical scheme:
A kind of D shape hole push broach, comprise push broach body, described push broach body is provided with successively transition tapering, front pilot, cutting portion, rear pilot and butt handle, the cross section of described push broach body is D shape and comprises arc-shaped side and straight flange, the external diameter being positioned at the arc-shaped side of the push broach body of described front pilot, cutting portion and rear pilot is equal, and the straight flange of described cutting portion is provided with the cutting teeth near described front pilot and the finishing teeth near described rear pilot.
Further, on described cutting teeth, compartment of terrain is provided with chip dividing groove, and the chip dividing groove that adjacent two described cutting teeths are arranged is interlaced arrangement.
Further, described transition tapering comprises front transition tapering and rear transition tapering, and the tapering in described front transition tapering is greater than the tapering in described rear transition tapering.
Further, the anterior angle of described cutting teeth and finishing teeth is 15 ° ± 1 °, and relief angle is 3 ° ± 30 ＇.
Further, the margin width of described cutting teeth is 0.05-0.15mm, and the margin width of described finishing teeth is 0.3-0.6mm.
The beneficial effects of the utility model are:
D shape hole push broach of the present utility model, be set to equal by the arc-shaped side external diameter of the push broach body by front pilot, cutting portion and rear pilot, and cutting teeth and finishing teeth are set on the straight flange of cutting portion, so, the flat sidewall in push broach processing D shape hole, D shape hole of the present utility model can be utilized, and there is the advantage that machining accuracy is high, working (machining) efficiency is high.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is the structural representation of D shape hole push broach embodiment of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is the structural representation of cutting teeth chip pocket;
Fig. 5 is the structural representation of finishing teeth chip pocket.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, be the structural representation of D shape hole push broach embodiment of the present utility model.The D shape hole push broach of the present embodiment, comprise push broach body, push broach body is provided with successively transition tapering 1, front pilot 2, cutting portion 3, rear pilot 4 and butt handle 5, the cross section of push broach body is D shape and comprises arc-shaped side 6 and straight flange 7, the external diameter being positioned at the arc-shaped side 6 of the push broach body of front pilot 2, cutting portion 3 and rear pilot 4 is equal, and the straight flange 7 of cutting portion 3 is provided with the cutting teeth 8 near front pilot 2 and the finishing teeth 9 near rear pilot 4.On the cutting teeth 8 of the present embodiment, compartment of terrain is provided with chip dividing groove 10, and the chip dividing groove 10 that adjacent two cutting teeths 8 are arranged is in interlaced arrangement.The transition tapering 1 of the present embodiment comprises front transition tapering 11 and rear transition tapering 12, and the tapering in front transition tapering 11 is greater than the tapering in rear transition tapering 12.
The cutting teeth of the present embodiment and the anterior angle γ of finishing teeth
0be 15 ° ± 1 °, relief angle α
0be 3 ° ± 30 ＇.The margin width b of cutting teeth
α 1for 0.05-0.15mm, the margin width b of finishing teeth
α 2for 0.3-0.6mm.In the present embodiment, the rise per tooth between adjacent two cutting teeths is equal.
The D shape hole push broach of the present embodiment, be set to equal by the arc-shaped side external diameter of the push broach body by front pilot, cutting portion and rear pilot, and cutting teeth and finishing teeth are set on the straight flange of cutting portion, so, the flat sidewall in push broach processing D shape hole, D shape hole of the present utility model can be utilized, and there is the advantage that machining accuracy is high, working (machining) efficiency is high.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (5)
1. a D shape hole push broach, comprise push broach body, described push broach body is provided with successively transition tapering, front pilot, cutting portion, rear pilot and butt handle, it is characterized in that: the cross section of described push broach body is D shape and comprises arc-shaped side and straight flange, the external diameter being positioned at the arc-shaped side of the push broach body of described front pilot, cutting portion and rear pilot is equal, and the straight flange of described cutting portion is provided with the cutting teeth near described front pilot and the finishing teeth near described rear pilot.
2. D shape hole push broach according to claim 1, is characterized in that: on described cutting teeth, compartment of terrain is provided with chip dividing groove, and the chip dividing groove that adjacent two described cutting teeths are arranged is interlaced arrangement.
3. D shape hole push broach according to claim 1, is characterized in that: described transition tapering comprises front transition tapering and rear transition tapering, and the tapering in described front transition tapering is greater than the tapering in described rear transition tapering.
4. the D shape hole push broach according to any one of claim 1-3, is characterized in that: the anterior angle of described cutting teeth and finishing teeth is 15 ° ± 1 °, and relief angle is 3 ° ± 30 ＇.
5. D shape hole push broach according to claim 4, is characterized in that: the margin width of described cutting teeth is 0.05-0.15mm, and the margin width of described finishing teeth is 0.3-0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420848518.6U CN204486906U (en) | 2014-12-29 | 2014-12-29 | The hole push broach of D shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420848518.6U CN204486906U (en) | 2014-12-29 | 2014-12-29 | The hole push broach of D shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204486906U true CN204486906U (en) | 2015-07-22 |
Family
ID=53566201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420848518.6U Expired - Fee Related CN204486906U (en) | 2014-12-29 | 2014-12-29 | The hole push broach of D shape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204486906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624134A (en) * | 2016-11-17 | 2017-05-10 | 四川成发航空科技股份有限公司 | Designing and manufacturing method for teeth of involute spline broach |
-
2014
- 2014-12-29 CN CN201420848518.6U patent/CN204486906U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624134A (en) * | 2016-11-17 | 2017-05-10 | 四川成发航空科技股份有限公司 | Designing and manufacturing method for teeth of involute spline broach |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20181229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |