CN202726215U - Once centering screw centering screw tap - Google Patents
Once centering screw centering screw tap Download PDFInfo
- Publication number
- CN202726215U CN202726215U CN2012202610408U CN201220261040U CN202726215U CN 202726215 U CN202726215 U CN 202726215U CN 2012202610408 U CN2012202610408 U CN 2012202610408U CN 201220261040 U CN201220261040 U CN 201220261040U CN 202726215 U CN202726215 U CN 202726215U
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- Prior art keywords
- tap
- centering
- screw
- screw tap
- once
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- Expired - Fee Related
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Abstract
The utility model relates to a once centering screw centering screw tap. The once centering screw centering screw tap is provided with a head tap, a second tap and a third tap from left to right in sequence. The centering screw tap is capable of centering a screw successfully once. A cylinder having both a centering function and a guiding function is ground between the head tap and the second tap. A through hole is arranged in a shaft axis inside the screw tap. A cutting edge is arranged on the through hole. The centering screw tap can apply to bolts with diameters under 12 millimeters. According to the once centering screw centering screw tap, the cylinder having both a centering function and a guiding function is arranged at the upper end of the screw tap, and therefore the screw tap can drill a screw thread accurately, damage of the screw tap can be avoided, centering can be achieved once, production efficiency and production quality are high. The once centering screw centering screw tap has the advantages of being simple in structure, convenient to manufacture, low in cost and high in work efficiency.
Description
Technical field
The utility model relates to a kind of screw tap, the centering screw tap of a specifically a kind of tapping.
Background technology
As everyone knows, screw tap is the conventional tool of processing column shape and conical internal thread, also applicable to tapping on lathe, but the internal thread for some minor threads, screw tap almost is unique process tool, set tap is arranged in the market, nut tap etc., but whenever attack a screw and must change screw tap No. two to three times, the efficient of processing is low like this, and operation is trouble also, in tapping, because plug tap and third hand tap do not have targeting part, the normal appearance breaks screw tap or screw attacked the phenomenons such as askew, even the size of tapping is not accurate.
Summary of the invention
In order to address the above problem, the utility model provides the centering screw tap of a kind of concrete centering and guide effect, can a tapping for little screw.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
The utility model is a kind of centering screw tap of a tapping, screw tap comprises nose cone, plug tap and the third hand tap that sets gradually from left to right, a tapping of centering screw tap, between nose cone and described plug tap, grind one section cylinder with centering and guide effect, at screw tap internal axis line one through hole is set, is provided with cutting edge at through hole.
Further improvement of the utility model is: the Screw of centering screw tap below diameter 12 millimeters (M12) uses.
The beneficial effects of the utility model are: the front end of screw tap has one section cylinder and does centering and guiding, and this screw tap has can be not askew tap, not fragile screw tap, and a tapping, production efficiency is high, and quality is good, guarantees machining accuracy.
The utility model is simple in structure, and is easy to make, with low cost, and high efficiency guarantees machining accuracy.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is A-A profile of the present utility model.
Wherein: 1-nose cone, 2-plug tap, 3-third hand tap, 4-cylinder, 5-through hole, 6-cutting edge.
The specific embodiment
In order to deepen that understanding of the present utility model is described in further detail the utility model below in conjunction with drawings and Examples, this embodiment only is used for explaining the utility model, protection domain of the present utility model is not consisted of to limit.
Shown in Fig. 1-2, the utility model is a kind of centering screw tap of a tapping, described screw tap comprises nose cone 1, plug tap 2 and the third hand tap 3 that sets gradually from left to right, a tapping of described centering screw tap, between described nose cone 1 and described plug tap 2, grind one section cylinder 4 with centering and guide effect, at described screw tap internal axis line one through hole 5 is set, is provided with cutting edge 6 at described through hole 5, the Screw of described centering screw tap below diameter 12 millimeters (M12) uses.The front end of screw tap has one section cylinder and does centering and guiding, and this screw tap has can be not askew tap, not fragile screw tap, and a tapping, production efficiency is high, and quality is good, will once get through in processing, does not need the twice working procedure, has guaranteed precision.
The utility model is simple in structure, and is easy to make, with low cost, high efficiency.
Claims (2)
1. centering screw tap of tapping once, described screw tap includes nose cone (1), plug tap (2) and the third hand tap (3) that from left to right sets gradually, it is characterized in that: a tapping of described centering screw tap, arranging one between, described nose cone (1) upper at described nose cone (1) and the described plug tap (2) has and feels relieved and the cylinder (4) of guide effect, at described screw tap internal axis line one through hole (5) is set, is provided with cutting edge (6) at described through hole (4).
2. the centering screw tap of a described a kind of tapping according to claim 1, it is characterized in that: described centering screw tap uses at the Screw of diameter below 12 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202610408U CN202726215U (en) | 2012-06-05 | 2012-06-05 | Once centering screw centering screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202610408U CN202726215U (en) | 2012-06-05 | 2012-06-05 | Once centering screw centering screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202726215U true CN202726215U (en) | 2013-02-13 |
Family
ID=47651964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202610408U Expired - Fee Related CN202726215U (en) | 2012-06-05 | 2012-06-05 | Once centering screw centering screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202726215U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717157A (en) * | 2012-06-05 | 2012-10-10 | 江苏天工工具有限公司 | Centering screw tap for one-time tapping |
| CN107335873A (en) * | 2017-07-19 | 2017-11-10 | 四川川昊精工机械有限公司 | A kind of screw tap high in machining efficiency |
-
2012
- 2012-06-05 CN CN2012202610408U patent/CN202726215U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717157A (en) * | 2012-06-05 | 2012-10-10 | 江苏天工工具有限公司 | Centering screw tap for one-time tapping |
| CN107335873A (en) * | 2017-07-19 | 2017-11-10 | 四川川昊精工机械有限公司 | A kind of screw tap high in machining efficiency |
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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: 20130213 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |