CN201728442U - Reverse spiral tap - Google Patents
Reverse spiral tap Download PDFInfo
- Publication number
- CN201728442U CN201728442U CN2010202067802U CN201020206780U CN201728442U CN 201728442 U CN201728442 U CN 201728442U CN 2010202067802 U CN2010202067802 U CN 2010202067802U CN 201020206780 U CN201020206780 U CN 201020206780U CN 201728442 U CN201728442 U CN 201728442U
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- screw thread
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- utility
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Abstract
The utility model belongs to the technology of a cutting tool and particularly relates to a reverse spiral tap. The reverse spiral tap comprises a rod body. The rod body comprises a clamping part, a tooth part and a handle part. The clamping part is arranged at one end of the rod body. The tooth part is arranged at the other end of the rod body corresponding to the clamping part. The tooth part is provided with a screw thread. The handle part is arranged between the clamping part and the tooth part. The tooth part also comprises a spiral groove. The direction of the spiral groove is opposite to the direction of the screw thread. In the utility model, the direction of the spiral groove is opposite to the direction of the screw thread, and when the tapping operation is carried out, chips are toward the front row, and thus, the reverse spiral tap can effectively convey out the chips generated in the tapping operation and can sufficiently discharge the chips. The utility model has the advantages of long service life, convenient cleaning, operation time saving, improvement of working efficiency and capability of improving quality of the produced screw thread.
Description
Technical field
The utility model belongs to the cutting element technology, particularly contrary spiral tap.
Background technology
Screw tap is a kind of cutter of machining internal thread, has thread groove vertically.Screw tap is divided into the straight trough screw tap according to its shape, spiral fluted tap and spiral pointed tap.Spiral fluted tap is used for the numerical control machining center drilling blind hole more, and it is very fast to have a process velocity, advantage of high precision.For screw tap is effectively moved, carry out the tapping operation, when cutting a hole, must effectively the chip that produces in working angles be removed.Chip is held back maybe and chip effectively can not be removed, and is the quality reduction of power consumption increase, screw cutting and a main cause of tool wear.The screw thread of existing spiral fluted tap and helicla flute are equidirectional, when it carries out the tapping operation, because of chip is discharged backwards, chip removal is abundant inadequately, cause the damage of screw tap easily, influence service life, also caused existing screw tap to be unsuitable for the deficiency of the aspects such as high speed tapping operation of through hole.And clear up inconvenience after the existing screw tap chip removal, need the expensive time clear up inefficiency.
Summary of the invention
The purpose of this utility model is to provide a kind of chip removal abundant at the deficiencies in the prior art, and cleaning is convenient, the contrary spiral tap of high efficiency and long service life.
The utility model is realized by following technology: contrary spiral tap, it comprises a body of rod, the body of rod includes clamping part, tooth portion and shank, clamping part is arranged at an end of the body of rod, tooth portion is arranged on the body of rod in the other end of clamping part correspondence, and tooth portion is provided with screw thread, and shank is arranged between clamping part and the tooth portion, tooth portion also comprises helicla flute, and the spiral fluted direction is opposite with the direction of screw thread.
Screw thread is a left-hand thread, and helicla flute is the right-hand screw groove.
Screw thread is a right-hand thread, and helicla flute is the left-hand screw groove.
The front end of tooth portion is a wedging portion, and the length of wedging portion is the length of 7 ~ 10 screw threads.
The length of wedging portion is the length of 8 ~ 9 screw threads.
The length of wedging portion is the length of 8 screw threads.
The beneficial effects of the utility model are: contrary spiral tap of the present utility model, it comprises a body of rod, the body of rod includes clamping part, tooth portion and shank, clamping part is arranged at an end of the body of rod, tooth portion is arranged on the body of rod in the other end of clamping part correspondence, and tooth portion is provided with screw thread, and shank is arranged between clamping part and the tooth portion, tooth portion also comprises helicla flute, and the spiral fluted direction is opposite with the direction of screw thread.Spiral fluted direction of the present utility model is opposite with the direction of screw thread, and when carrying out the tapping operation, chip is discharged forward, therefore, can effectively the chip that produces in the tapping operation be transferred out, and chip removal is abundant, long service life of the present utility model; And cleaning is convenient, saves the activity duration, increases work efficiency, and can improve the quality of the screw thread of made.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model.
Fig. 2 is the structural representation of embodiment 2 of the present utility model.
Reference numeral:
1---clamping part 2---tooth portion 3---shank
21---screw thread 22---helicla flute 23---wedging portions.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Contrary spiral tap, it comprises a body of rod, the body of rod includes clamping part 1, tooth portion 2 and shank 3, clamping part 1 is arranged at an end of the body of rod, and tooth portion 2 is arranged at the other end of the body of rod, and tooth portion 2 is provided with screw thread 21, screw thread 21 is a left-hand thread, shank 3 is arranged between clamping part 1 and the tooth portion 2, and tooth portion 2 also comprises helicla flute 22, and helicla flute 22 is the right-hand screw groove.The direction of right-hand screw groove is opposite with the direction of left-hand thread, and when carrying out the tapping operation, chip is discharged forward, therefore, can effectively the chip that produces in the tapping operation be transferred out, and chip removal is abundant, long service life of the present utility model; And cleaning is convenient, saves the activity duration, increases work efficiency, and can improve the quality of the screw thread of made.
The front end of present embodiment tooth portion 2 is a wedging portion 23, and the length of wedging portion 23 is the length of 7 ~ 10 screw threads 21.The cutting torsion that such design can make the screw thread of wedging portion 23 be born when carrying out the tapping operation reduces, and prolongs service life of the present utility model.According to the demand of tapping operation, select the length of wedging portion 23.
The difference of present embodiment and embodiment 1 is: the screw thread 21 of present embodiment is right-hand thread, and helicla flute 22 is the left-hand screw groove.Present embodiment designs according to different product demands, and its operation principle is identical with embodiment 1.
Above embodiment, it is better embodiment of the present utility model, be not to limit the utility model practical range,, all should comprise in the utility model patent claim so the equivalence that all structures according to the utility model claim, feature and principle are done changes or modifies.
Claims (6)
1. contrary spiral tap, it comprises a body of rod, the body of rod includes clamping part (1), tooth portion (2) and shank (3), clamping part (1) is arranged at an end of the body of rod, tooth portion (2) is arranged at the other end of the body of rod, and tooth portion (2) is provided with screw thread (21), and shank (3) is arranged between clamping part (1) and the tooth portion (2), it is characterized in that: tooth portion (2) also comprises helicla flute (22), and the direction of helicla flute (22) is opposite with the direction of screw thread (21).
2. contrary spiral tap according to claim 1, it is characterized in that: screw thread (21) is a left-hand thread, and helicla flute (22) is the right-hand screw groove.
3. contrary spiral tap according to claim 1, it is characterized in that: screw thread (21) is a right-hand thread, and helicla flute (22) is the left-hand screw groove.
4. according to any described contrary spiral tap of claim 1-3, it is characterized in that: the front end of tooth portion (2) is wedging portion (23), and the length of wedging portion (23) is the length of 7 ~ 10 screw threads (21).
5. contrary spiral tap according to claim 4, it is characterized in that: the length of wedging portion (23) is the length of 8 ~ 9 screw threads (21).
6. contrary spiral tap according to claim 5, it is characterized in that: the length of wedging portion (23) is the length of 8 screw threads (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202067802U CN201728442U (en) | 2010-05-28 | 2010-05-28 | Reverse spiral tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202067802U CN201728442U (en) | 2010-05-28 | 2010-05-28 | Reverse spiral tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201728442U true CN201728442U (en) | 2011-02-02 |
Family
ID=43519600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202067802U Expired - Fee Related CN201728442U (en) | 2010-05-28 | 2010-05-28 | Reverse spiral tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201728442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372690A (en) * | 2012-04-16 | 2013-10-30 | 圆兴(厦门)精密工具有限公司 | Spiral-oil-groove extrusion screw tap |
-
2010
- 2010-05-28 CN CN2010202067802U patent/CN201728442U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372690A (en) * | 2012-04-16 | 2013-10-30 | 圆兴(厦门)精密工具有限公司 | Spiral-oil-groove extrusion screw tap |
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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: 20110202 Termination date: 20170528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |