CN205129101U - High guidance quality screw tap - Google Patents
High guidance quality screw tap Download PDFInfo
- Publication number
- CN205129101U CN205129101U CN201520767291.7U CN201520767291U CN205129101U CN 205129101 U CN205129101 U CN 205129101U CN 201520767291 U CN201520767291 U CN 201520767291U CN 205129101 U CN205129101 U CN 205129101U
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- CN
- China
- Prior art keywords
- screw tap
- tap
- cone
- guidance quality
- wire cone
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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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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The utility model provides a high guidance quality screw tap, includes tap holder and screw tap physically, be provided with the screw tap neck between the screw tap body and tap holder, the diameter of screw tap neck is less than the path of the screw tap body, the front end of the screw tap body is provided with the guide post, and the diameter of guide post is less than the path of the screw tap body, and the guide post is equipped with conical transition with screw tap body coupling department, the front end of guide post is provided with the inner cone, the outer end of tap holder is provided with a clamping part, and the tip of the outer end of tap holder still is provided with the back awl, the periphery of the screw tap body evenly is provided with 3 -5 root chip pocket. This kind of high guidance quality screw tap had both possessed fine guidance quality, can make things convenient for clamping, coping again, can also prevent to harm the screw thread.
Description
Technical field
The utility model relates to a kind of cutter, particularly relates to a kind of screw tap of thread mill drilling.
Background technology
Screw tap is a kind of cutter of machining internal thread, is also the main instrument of machining internal thread.Spiral tap and straight sword screw tap can be divided into according to shape, set tap and machine tap can be divided into according to environment for use, can metric system be divided into according to specification, screw tap made in U.S.A and made in Great Britain.Straight slot screw tap handling ease, precision is lower slightly, and output is larger.Be generally used for engine lathe, the screw thread process use of drilling machine and tapping machine, cutting speed is slower.Spiral fluted tap is used for numerical control machining center processing blind hole use, and process velocity is very fast, and precision is high, and chip removal is better, centering good.
Generally there is the leader of a taper front end of screw tap, the bottom outlet of this tapered guiding portion processed screw of bootable screw tap subtend in the screw tap course of work, bottom outlet due to processed screw is cylindrical hole, in actual tapping process, particularly during hand tapping, the guide effect of tapered guiding portion is bad, often there is the phenomenon that screw tap is crooked, cause tapping difficulty, screw not just, screw tap discontinuity even damages screw tap.
Utility model content
For existing existing above-mentioned deficiency, technical problem to be solved in the utility model is to provide a kind of high guidance quality screw tap, and this screw tap is the good guidance quality of tool both, again can easy to setup, reconditioning, can also prevent from damaging screw thread.
In order to solve the problems of the technologies described above, the high guidance quality screw tap of one of the present utility model, comprises tap holder and wire cone, is provided with screw tap neck between described wire cone and tap holder, and the diameter of screw tap neck is less than the path of wire cone; The front end of described wire cone is provided with lead, and the diameter of lead is less than the path of wire cone, and lead and wire cone junction are provided with tapering transition section; The front end of lead is provided with inner cone; The outer end of described tap holder is provided with a clamping part, and the end of the outer end of tap holder is also provided with rear cone; The periphery of described wire cone is evenly provided with 3-5 root chip pocket.
After adopting said structure, because the front end of wire cone is provided with lead, and lead and wire cone junction are provided with tapering transition section, the front end of lead is provided with inner cone, therefore this screw tap positioning and guiding in tapping process is fine to plus effect, facilitates screw tap to shoot the bottom outlet of processed screw with correct direction.Again owing to being provided with screw tap neck between wire cone and tap holder, the diameter of screw tap neck is less than the path of wire cone, so when tapping depth is comparatively dark, after wire cone enters screw completely, screw tap neck enters screw and can not damage by double thread.The outer end of tap holder is provided with a clamping part, facilitates the clamping of screw tap; The end of the outer end of tap holder is provided with rear cone, facilitates the guide-localization of screw tap clamping; Rear cone and inner cone conveniently can also carry out suitable reconditioning to screw tap; The periphery of wire cone is evenly provided with 3-5 root chip pocket, and chip can be prevented the damage of machining screw.This screw tap is the good guidance quality of tool both, again can easy to setup, reconditioning, can also prevent from damaging screw thread.
Preferred embodiment of the present utility model, the diameter of described screw tap neck is the 90%-95% of the path of wire cone.This scope had both ensured that screw tap neck did not contact screw thread in tapping process, ensured that again screw tap has certain rigidity.
Preferred embodiment of the present utility model, the diameter of described lead is the 90%-95% of the path of wire cone.This scope had both ensured that the guiding of lead was to plus effect, ensured that again lead exits smoothly after tapping completes.
Preferred embodiment of the present utility model, on described wire cone, the anterior angle α of cutting edge is 5 ° to 15 °.This front angular region cutting resistance is little, and edge strength is high.
Preferred embodiment of the present utility model, on described wire cone, the anterior angle α of cutting edge is 6 ° to 8 °.Be suitable for the processing of the materials such as nonferrous metal and alloy, cast iron, heat-resisting alloy.
Preferred embodiment of the present utility model, on described wire cone, the anterior angle α of cutting edge is 12 ° to 14 °.Be suitable for the processing of carbon steel and the material such as steel alloy, steel forgings.
Preferred embodiment of the present utility model, on described wire cone, the relief angle β of cutting edge is 3 ° to 5 °.Facilitate screw tap to exit and do not damage screw thread.
Preferred embodiment of the present utility model, the section of described clamping part is square.Screw tap is facilitated to clamp.
Preferred embodiment of the present utility model, described chip pocket is 3-4 root.More convenient appearance bits and chip removal.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of detailed description of the invention of a kind of high guidance quality screw tap of the utility model.
Fig. 2 is the A-A sectional view in structure shown in Fig. 1.
In figure: 1. tap holder, 2. wire cone, 3. screw tap neck, 4. lead, 5. tapering transition section, 6. inner cone, 7. clamping part, 8. rear cone, 9. chip pocket.
Detailed description of the invention
Below with reference to drawings and Examples, the utility model is described in detail.
As shown in Figure 1, a kind of high guidance quality screw tap, comprise tap holder 1 and wire cone 2, screw tap neck 3 is provided with between described wire cone 2 and tap holder 1, the diameter of screw tap neck 3 is 90% of the path of wire cone 2, the diametric requirements of screw tap neck 3 is less than the path of wire cone 2, and the preferable range of the diameter of screw tap neck 3 is the 90%-95% of the path of wire cone 2.The front end of described wire cone 2 is provided with lead 4, and the diameter of lead 4 is 95% of the path of wire cone 2, and the diametric requirements of lead 4 is less than the path of wire cone 2, and the preferable range of the diameter of lead 4 is the 90%-95% of the path of wire cone 2.Lead 4 and wire cone 2 junction are provided with tapering transition section 5; The front end of lead 4 is provided with inner cone 6.The outer end of described tap holder 1 is provided with a clamping part 7, and the section of clamping part 7 is square; The end of the outer end of tap holder 1 is also provided with rear cone 8.The periphery of described wire cone 2 is evenly provided with 4 chip pockets 9, also can arrange 3 or 5 chip pockets 9.
As shown in Figure 2, on wire cone 2, the anterior angle α of cutting edge is 6 ° to 8 °, and in cone 2, the anterior angle α of cutting edge also can be 5 ° of other angles to 15 ° of scopes; On wire cone 2, the anterior angle α of cutting edge is 12 ° to 14 °, is suitable for the processing of carbon steel and the material such as steel alloy, steel forgings.On wire cone 2, the relief angle β of cutting edge is 3 ° to 5 °.
This high guidance quality screw tap is provided with lead 4 due to the front end of wire cone 2, and lead 4 and wire cone 2 junction are provided with tapering transition section 5, the front end of lead 4 is provided with inner cone 6, therefore this screw tap positioning and guiding in tapping process is fine to plus effect, facilitates screw tap to shoot the bottom outlet of processed screw with correct direction; And the diameter of lead 4 is 95% of the path of wire cone 2, both ensured that the guiding of lead 4 was to plus effect, ensured again that lead 4 exited smoothly after tapping completes.Again owing to being provided with screw tap neck 3 between wire cone 2 and tap holder 1, the diameter of screw tap neck 3 is 90% of the path of wire cone 2, so when tapping depth is comparatively dark, after wire cone 2 enters screw completely, screw tap neck 3 enters screw and can not damage by double thread, ensures that again screw tap has certain rigidity.The outer end of tap holder 1 is provided with a clamping part 7, and the section of clamping part 7 is square, facilitates the clamping of screw tap; The end of the outer end of tap holder 1 is also provided with rear cone 8, facilitates the guide-localization of screw tap clamping; Rear cone 8 and inner cone 6 conveniently can also carry out suitable reconditioning to screw tap; The periphery of wire cone 2 is evenly provided with 4 chip pockets 9, chip can be prevented the damage of machining screw, also facilitate chip removal; On wire cone 2, the anterior angle α of cutting edge is 6 ° to 8 °, is suitable for the processing of the materials such as nonferrous metal and alloy, cast iron, heat-resisting alloy.This screw tap is the good guidance quality of tool both, again can easy to setup, reconditioning, can also prevent from damaging screw thread, be suitable for the processing of the materials such as nonferrous metal and alloy, cast iron, heat-resisting alloy.
Should be noted that, the explanation of above-described embodiment the application of unrestricted the utility model, only exemplary illustration principle of the present utility model and effect, but not for limiting protection domain of the present utility model.Rights protection scope of the present utility model, should be as disclosed in the claims.
Claims (9)
1. a high guidance quality screw tap, comprises tap holder (1) and wire cone (2), it is characterized in that: be provided with screw tap neck (3) between described wire cone (2) and tap holder (1), and the diameter of screw tap neck (3) is less than the path of wire cone (2); The front end of described wire cone (2) is provided with lead (4), and the diameter of lead (4) is less than the path of wire cone (2), and lead (4) and wire cone (2) junction are provided with tapering transition section (5); The front end of lead (4) is provided with inner cone (6); The outer end of described tap holder (1) is provided with a clamping part (7), and the end of the outer end of tap holder (1) is also provided with rear cone (8); The periphery of described wire cone (2) is evenly provided with 3-5 root chip pocket (9).
2. high guidance quality screw tap according to claim 1, is characterized in that: the diameter of described screw tap neck (3) is the 90%-95% of the path of wire cone (2).
3. high guidance quality screw tap according to claim 1, is characterized in that: the diameter of described lead (4) is the 90%-95% of the path of wire cone (2).
4. high guidance quality screw tap according to claim 1, is characterized in that: the anterior angle α of the upper cutting edge of described wire cone (2) is 5 ° to 15 °.
5. high guidance quality screw tap according to claim 4, is characterized in that: the anterior angle α of the upper cutting edge of described wire cone (2) is 6 ° to 8 °.
6. high guidance quality screw tap according to claim 4, is characterized in that: the anterior angle α of the upper cutting edge of described wire cone (2) is 12 ° to 14 °.
7. high guidance quality screw tap according to claim 1, is characterized in that: the relief angle β of the upper cutting edge of described wire cone (2) is 3 ° to 5 °.
8. high guidance quality screw tap according to claim 1, is characterized in that: the section of described clamping part (6) is square.
9. high guidance quality screw tap according to claim 1, is characterized in that: described chip pocket (9) is 3-4 root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520767291.7U CN205129101U (en) | 2015-09-30 | 2015-09-30 | High guidance quality screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520767291.7U CN205129101U (en) | 2015-09-30 | 2015-09-30 | High guidance quality screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205129101U true CN205129101U (en) | 2016-04-06 |
Family
ID=55614926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520767291.7U Expired - Fee Related CN205129101U (en) | 2015-09-30 | 2015-09-30 | High guidance quality screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205129101U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999904A (en) * | 2017-12-13 | 2018-05-08 | 贵州新安航空机械有限责任公司 | A kind of small-bore trapezoidal thread thread forming tap |
| CN110202221A (en) * | 2019-05-29 | 2019-09-06 | 西安法士特汽车传动有限公司 | A kind of apex screw tap and its application |
-
2015
- 2015-09-30 CN CN201520767291.7U patent/CN205129101U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999904A (en) * | 2017-12-13 | 2018-05-08 | 贵州新安航空机械有限责任公司 | A kind of small-bore trapezoidal thread thread forming tap |
| CN110202221A (en) * | 2019-05-29 | 2019-09-06 | 西安法士特汽车传动有限公司 | A kind of apex screw tap and its application |
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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: 20160406 Termination date: 20210930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |