CN103464843A - Extrusion screw tap for internal thread machining - Google Patents
Extrusion screw tap for internal thread machining Download PDFInfo
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- CN103464843A CN103464843A CN 201310411355 CN201310411355A CN103464843A CN 103464843 A CN103464843 A CN 103464843A CN 201310411355 CN201310411355 CN 201310411355 CN 201310411355 A CN201310411355 A CN 201310411355A CN 103464843 A CN103464843 A CN 103464843A
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- China
- Prior art keywords
- internal thread
- thread machining
- forming tap
- screw tap
- thread forming
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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.)
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Abstract
The invention discloses an extrusion screw tap for internal thread machining. The extrusion screw tap for the internal thread machining comprises a handle portion, an intermediate transition connecting portion and a working portion which are arranged in sequence; thread cutting teeth are externally arranged on the working portion; a hard chromium coating layer is externally arranged on the thread cutting teeth; a tungsten carbide coating layer is externally arranged on the hard chromium coating layer; the thickness of the tungsten carbide coating layer is larger than that of the hard chromium coating layer. Accordingly, the extrusion screw tap for the internal thread machining is simple and reasonable in structure, good in abrasion-resistant and durable performance and good in using effect.
Description
Technical field
The present invention relates to the hardware & tools technical field, particularly relate to a kind of internal thread machining thread forming tap.
Background technology
Thread forming tap is to utilize the metal plastic deformation principle and a kind of Novel threaded cutter of machining internal thread, thread forming tap extruding internal thread is ELEMENTARY INTRODUCTION TO NON technique, be specially adapted to that intensity is lower, plasticity copper alloy and aluminium alloy preferably, also can be used for the material tapping that hardness is low, plasticity is large such as stainless steel and mild steel.The wear-resisting durability of existing thread forming tap is bad, and serviceability is undesirable.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of internal thread machining thread forming tap, simple and reasonable, has wear-resisting durability preferably, and result of use is good.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of internal thread machining thread forming tap is provided, comprise: the shank set gradually, middle transition connecting portion and operate portions, the outer setting of described operate portions has the screw chasing tooth, the outer setting of described screw chasing tooth has the hard chrome coating, the outer setting of described hard chrome coating has tungsten carbide coating, and the thickness of described tungsten carbide coating is greater than the thickness of described hard chrome coating.
In a preferred embodiment of the present invention, the front end of described operate portions is provided with cutting cone.
In a preferred embodiment of the present invention, the external diameter of described operate portions is greater than the external diameter of shank.
In a preferred embodiment of the present invention, described thread forming tap adopts carbide alloy to make.
The invention has the beneficial effects as follows: internal thread machining thread forming tap of the present invention, simple and reasonable, there is wear-resisting durability preferably, result of use is good.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of internal thread machining of the present invention with thread forming tap one preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1, shank, 2, the middle transition connecting portion, 3, operate portions, 4, the screw chasing tooth.
The specific embodiment
Below will the technical scheme in the embodiment of the present invention be clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under the creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the embodiment of the present invention comprises:
A kind of internal thread machining thread forming tap, comprise: the shank 1 set gradually, middle transition connecting portion 2 and operate portions 3, the outer setting of described operate portions 3 has screw chasing tooth 4, the outer setting of described screw chasing tooth 4 has the hard chrome coating, the outer setting of described hard chrome coating has tungsten carbide coating, the thickness of described tungsten carbide coating is greater than the thickness of described hard chrome coating, and the combination of described hard chrome coating and tungsten carbide coating has effectively improved hardness and the anti-wear performance of screw chasing tooth 4.
The front end of described operate portions 3 is provided with cutting cone.
The external diameter of described operate portions 3 is greater than the external diameter of shank 1.
Described thread forming tap adopts carbide alloy to make, and is applicable to the processing rigid metal.
Internal thread machining thread forming tap of the present invention, simple and reasonable, there is wear-resisting durability preferably, result of use is good.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in scope of patent protection of the present invention.
Claims (4)
1. an internal thread machining thread forming tap, it is characterized in that, comprise: the shank set gradually, middle transition connecting portion and operate portions, the outer setting of described operate portions has the screw chasing tooth, the outer setting of described screw chasing tooth has the hard chrome coating, the outer setting of described hard chrome coating has tungsten carbide coating, and the thickness of described tungsten carbide coating is greater than the thickness of described hard chrome coating.
2. internal thread machining thread forming tap according to claim 1, is characterized in that, the front end of described operate portions is provided with cutting cone.
3. internal thread machining thread forming tap according to claim 1, is characterized in that, the external diameter of described operate portions is greater than the external diameter of shank.
4. internal thread machining thread forming tap according to claim 1, is characterized in that, described thread forming tap adopts carbide alloy to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310411355 CN103464843A (en) | 2013-09-11 | 2013-09-11 | Extrusion screw tap for internal thread machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310411355 CN103464843A (en) | 2013-09-11 | 2013-09-11 | Extrusion screw tap for internal thread machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103464843A true CN103464843A (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310411355 Pending CN103464843A (en) | 2013-09-11 | 2013-09-11 | Extrusion screw tap for internal thread machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103464843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842025A (en) * | 2014-04-11 | 2015-08-19 | 圆兴(厦门)精密工具有限公司 | Hot melting drilling tapping thread forming tap |
-
2013
- 2013-09-11 CN CN 201310411355 patent/CN103464843A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842025A (en) * | 2014-04-11 | 2015-08-19 | 圆兴(厦门)精密工具有限公司 | Hot melting drilling tapping thread forming tap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |