CN205732574U - A kind of cold rolled tube female thread mould - Google Patents
A kind of cold rolled tube female thread mould Download PDFInfo
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- CN205732574U CN205732574U CN201620453767.4U CN201620453767U CN205732574U CN 205732574 U CN205732574 U CN 205732574U CN 201620453767 U CN201620453767 U CN 201620453767U CN 205732574 U CN205732574 U CN 205732574U
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Abstract
This utility model relates to a kind of cold rolled tube female thread mould, belongs to metal tube rolling technical field.A kind of cold rolled tube female thread mould, described cold rolled tube female thread mould is rhabodoid, includes the section of clamp-oning, rolling section and extruding zone that one is connected successively；The outer surface of described rolling section and described extruding zone is provided with thread-like groove, and the degree of depth of described thread-like groove is gradually deepened to described extruding zone by described rolling section；Described cold rolled tube female thread mould is on the direction of the described section of clamp-oning to described extruding zone, and the diameter of a circle that the outline of cross section is formed tapers into.This cold rolled tube female thread mould is applicable to the female thread of cold-rolling practice processing metal tube, and pitch is homogeneous, the strength of materials is high, can roll the metal tube of relatively thin and thicker tube wall.
Description
Technical field
This utility model relates to metal tube rolling technical field, is specifically related to a kind of cold rolled tube female thread mould.
Background technology
Traditional thread metal generally uses the structure of cold-drawing process machining internal thread, such as: the Chinese invention patent of Application No. CN200510013531.5 discloses the production method of a kind of cold-drawn steel tube with internal thread.
There is following defect in cold-drawing process institute production and processing technology, in Cold Drawing Process, the female thread spacing of metal tube can produce fine difference, and the homogeneity of female thread is the best；And owing to having the action of " pulling out " and produced pulling force thereof in Cold Drawing Process, the metal tube that therefore cold-drawing process is not suitable for tube wall is thicker or relatively thin is processed；It addition, the thread metal intensity that cold-drawing process is produced is the best.
Cold-rolling practice provides probability as the means of machining internal thread for solving the problems referred to above, and uses cold-rolling practice machining internal thread structure to need corresponding female thread mould to coordinate processing.
Utility model content
The purpose of this utility model, is to solve the problems referred to above, it is provided that a kind of cold rolled tube female thread mould.
The technical scheme that this utility model solves the problems referred to above is as follows:
A kind of cold rolled tube female thread mould, described cold rolled tube female thread mould is rhabodoid, includes the section of clamp-oning, rolling section and extruding zone that one is connected successively；The outer surface of described rolling section and described extruding zone is provided with thread-like groove, and the degree of depth of described thread-like groove is gradually deepened to described extruding zone by described rolling section；Described cold rolled tube female thread mould is on the direction of the described section of clamp-oning to described extruding zone, and the diameter of a circle that the outline of cross section is formed tapers into.
Cold-drawing technology is that metal tube is carried out stretched operation, cold-rolling process is then that metal tube is carried out squash type operation, the flow direction of metal is different in cold-drawing technology and in cold-rolling process, during cold-drawing technology, thread can occur tiny deviation when stretching under the effect of mould, affect the precision of metal tube female thread, and inner wall of metal tube is pressed against described mould by cold-rolled process, this problem would not be there is, the precision of cold-rolling process processing thread metal out is more preferable, it is applicable to the fields such as firearm chamber pipe, improves the precision of shooting.
The degree of depth of described thread-like groove is gradually deepened to described extruding zone by described rolling section so that the thread of female thread gradually forms in cold-rolled process stage by stage, improves homogeneity and the stability of material of female thread；Described cold rolled tube female thread mould is on the direction of the described section of clamp-oning to described extruding zone, the diameter of a circle that the outline of cross section is formed tapers into, metal tube is more prone to when cold rolling traveling forward, also complies with cold-rolling process rolling and metal tube is calendered or even the most thinning trend.
Preferred as technique scheme, it is curve that the diameter of a circle that the outline of described cross section is formed tapers into two long limits of the axial cross section so that described cold rolled tube female thread mould, i.e. from the described section of clamp-oning to described extruding zone, the speed that the diameter of a circle that the outline of cross section is formed diminishes is gradually reduced.
Curvilinear long limit is for the material behavior of complexed metal pipe so that it is be easier to rolling.
Metal material itself has certain elastic force, and the amount of rolling is the most, and the power required for rolling is the biggest, and curvilinear long limit is that the flowing of metal provides additional space and promotes the inclined-plane of its flow forward in the rolling direction, and rolling is got up more laborsaving.
Preferred as technique scheme, two described long limits near described in the part of the section of clamp-oning be curve, the part near described extruding zone is straight line.
Preferred as technique scheme, described curve is a parabolical part.
The present inventor, through overtesting, finds that the trend of parabolic curvature change is more suitable for the rolling of metal material, more mates with the characteristic of metal material, therefore uses a parabolical part as the shape of curve at this.
At the outermost portion of extruding zone, the wall thickness of metal tube and internal-and external diameter have tended to sizing, it is only necessary to the mould complexed metal pipe of straight line.
Preferred as technique scheme, described in the section of clamp-oning one end of described rolling section is provided with installation portion.
Preferred as technique scheme, described installation portion for being provided with externally threaded rhabodoid, the diameter of the cross section of described installation portion be less than described in the diameter of cross section of the section of clamp-oning.
Installation portion is used for connecting and fix described female thread mould.
Preferred as technique scheme, described in the outer surface of the section of clamp-oning be shiny surface.
Preferred as technique scheme, described extruding zone includes rolling solid section near the screw thread deepened section of described rolling section and the screw thread away from described rolling section, and in described screw thread deepened section, the degree of depth of thread-like groove gradually deepens no longer to deepen until rolling solid section to described screw thread.
In sum, this utility model has the advantages that
A kind of cold rolled tube female thread mould the most described in the utility model is applicable to the female thread of cold-rolling practice processing metal tube；
The thread metal pitch stable uniform that a kind of cold rolled tube female thread mould the most described in the utility model is produced, the strength of materials is high, it is possible to roll the metal tube of relatively thin and thicker tube wall；
A kind of cold rolled tube female thread mould complexed metal properties of materials the most described in the utility model, is provided with the long limit of curve so that cold-rolled process is easier to, and feeding of metal tube is more laborsaving.
Accompanying drawing explanation
Fig. 1 is a kind of cold rolled tube female thread mould structure schematic diagram described in embodiment 1；
Fig. 2 is a kind of cold rolled tube female thread mould structure schematic diagram described in embodiment 2；
Fig. 3 is a kind of cold rolled tube female thread mould structure schematic diagram described in embodiment 3；
Fig. 4 is Steel Pipe Cold and described female thread mould fit structure schematic diagram；
In figure, the 1-section of clamp-oning, 2-rolling section, 3-extruding zone, 31-screw thread deepened section, 32-screw thread roll solid section, 4-installation portion, 5-cold tube rolling.
Detailed description of the invention
Technical scheme in this utility model embodiment will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained under not doing creative work premise, broadly fall into the scope of this utility model protection.
With embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment 1: a kind of cold rolled tube female thread mould, described cold rolled tube female thread mould is rhabodoid, includes the section of clamp-oning 1, rolling section 2 and extruding zone 3 that one is connected successively；The outer surface of the described section of clamp-oning 1 is shiny surface, and the outer surface of described rolling section 2 and described extruding zone 3 is provided with thread-like groove, and the degree of depth of described thread-like groove is gradually deepened to described extruding zone 3 by described rolling section 2；Described cold rolled tube female thread mould is on the direction of the described section of clamp-oning 1 to described extruding zone 3, and the diameter of a circle that the outline of cross section is formed tapers into；The described section of clamp-oning 1 is provided with installation portion 4 away from one end of described rolling section 2, described installation portion 4 for being provided with externally threaded rhabodoid, the diameter of the cross section of described installation portion 4 be less than described in the diameter of cross section of the section of clamp-oning 1.
Cold tube rolling 5 clamp-oned by the section of clamp-oning 1, roll conjunction mutually with thread-like groove at rolling section 2 and extruding zone 3, and is fed forward by extruding zone.
Embodiment 2: a kind of cold rolled tube female thread mould, described cold rolled tube female thread mould is rhabodoid, includes the section of clamp-oning 1, rolling section 2 and extruding zone 3 that one is connected successively；The outer surface of the described section of clamp-oning 1 is shiny surface, and the outer surface of described rolling section 2 and described extruding zone 3 is provided with thread-like groove, and the degree of depth of described thread-like groove is gradually deepened to described extruding zone 3 by described rolling section 2；Described cold rolled tube female thread mould is on the direction of the described section of clamp-oning 1 to described extruding zone 3, and the diameter of a circle that the outline of cross section is formed tapers into；The described section of clamp-oning 1 is provided with installation portion 4 away from one end of described rolling section 2, described installation portion 4 for being provided with externally threaded rhabodoid, the diameter of the cross section of described installation portion 4 be less than described in the diameter of cross section of the section of clamp-oning 1.
It is a parabolical part that the diameter of a circle that the outline of described cross section is formed tapers into two long limits of the axial cross section so that described cold rolled tube female thread mould, i.e. it is gradually reduced to described extruding zone 3, the speed that the diameter of a circle that the outline of cross section is formed diminishes from the described section of clamp-oning 1.
Cold tube rolling 5 clamp-oned by the section of clamp-oning 1, roll conjunction mutually with thread-like groove at rolling section 2 and extruding zone 3, and is fed forward by extruding zone.
Embodiment 3: a kind of cold rolled tube female thread mould, described cold rolled tube female thread mould is rhabodoid, includes the section of clamp-oning 1, rolling section 2 and extruding zone 3 that one is connected successively；The outer surface of the described section of clamp-oning 1 is shiny surface, and the outer surface of described rolling section 2 and described extruding zone 3 is provided with thread-like groove, and the degree of depth of described thread-like groove is gradually deepened to described extruding zone 3 by described rolling section 2；Described cold rolled tube female thread mould is on the direction of the described section of clamp-oning 1 to described extruding zone 3, and the diameter of a circle that the outline of cross section is formed tapers into；The described section of clamp-oning 1 is provided with installation portion 4 away from one end of described rolling section 2, described installation portion 4 for being provided with externally threaded rhabodoid, the diameter of the cross section of described installation portion 4 be less than described in the diameter of cross section of the section of clamp-oning 1.
It is curve that the diameter of a circle that the outline of described cross section is formed tapers into two long limits of the axial cross section so that described cold rolled tube female thread mould, i.e. from the described section of clamp-oning 1 to described extruding zone 3, the speed that the diameter of a circle that the outline of cross section is formed diminishes is gradually reduced, described in two described long limits are close, a part for the section of clamp-oning 1 is curve, and the part near described extruding zone 3 is straight line.
Described extruding zone 3 includes rolling solid section 32 near the screw thread deepened section 31 of described rolling section 2 and the screw thread away from described rolling section 2, and in described screw thread deepened section 31, the degree of depth of thread-like groove gradually deepens no longer to deepen until rolling solid section 32 to described screw thread.
Cold tube rolling 5 clamp-oned by the section of clamp-oning 1, roll conjunction mutually with thread-like groove at rolling section 2 and extruding zone 3, and is fed forward by extruding zone.
Claims (8)
1. a cold rolled tube female thread mould, it is characterised in that: described cold rolled tube female thread mould is rhabodoid, includes the section of clamp-oning (1), rolling section (2) and extruding zone (3) that one is connected successively；The outer surface of described rolling section (2) and described extruding zone (3) is provided with thread-like groove, and the degree of depth of described thread-like groove is gradually deepened to described extruding zone (3) by described rolling section (2)；Described cold rolled tube female thread mould is on the direction of the described section of clamp-oning (1) to described extruding zone (3), and the diameter of a circle that the outline of cross section is formed tapers into.
A kind of cold rolled tube female thread mould the most according to claim 1, it is characterized in that: it is curve that the diameter of a circle that the outline of described cross section is formed tapers into two long limits of the axial cross section so that described cold rolled tube female thread mould, i.e. from the described section of clamp-oning (1) to described extruding zone (3), the speed that the diameter of a circle that the outline of cross section is formed diminishes is gradually reduced.
A kind of cold rolled tube female thread mould the most according to claim 2, it is characterised in that: described in two described long limits are close, a part for the section of clamp-oning (1) is curve, and the part near described extruding zone (3) is straight line.
4. according to a kind of cold rolled tube female thread mould described in Claims 2 or 3, it is characterised in that: described curve is a parabolical part.
A kind of cold rolled tube female thread mould the most according to claim 1, it is characterised in that the section of clamp-oning described in: (1) is provided with installation portion (4) away from one end of described rolling section (2).
A kind of cold rolled tube female thread mould the most according to claim 5, it is characterised in that: described installation portion (4) for being provided with externally threaded rhabodoid, the diameter of the cross section of described installation portion (4) be less than described in the diameter of cross section of the section of clamp-oning (1).
A kind of cold rolled tube female thread mould the most according to claim 1, it is characterised in that the outer surface of the section of clamp-oning described in: (1) is shiny surface.
A kind of cold rolled tube female thread mould the most according to claim 1, it is characterized in that: described extruding zone (3) includes rolling solid section (32) near the screw thread deepened section (31) of described rolling section (2) and the screw thread away from described rolling section (2), and the degree of depth of the upper thread-like groove of described screw thread deepened section (31) gradually deepens no longer to deepen until rolling solid section (32) to described screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620453767.4U CN205732574U (en) | 2016-05-18 | 2016-05-18 | A kind of cold rolled tube female thread mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620453767.4U CN205732574U (en) | 2016-05-18 | 2016-05-18 | A kind of cold rolled tube female thread mould |
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| Publication Number | Publication Date |
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| CN205732574U true CN205732574U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620453767.4U Active CN205732574U (en) | 2016-05-18 | 2016-05-18 | A kind of cold rolled tube female thread mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880288A (en) * | 2016-05-18 | 2016-08-24 | 常州市环华机械有限公司 | Internal thread mold for cold-rolled pipe |
-
2016
- 2016-05-18 CN CN201620453767.4U patent/CN205732574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880288A (en) * | 2016-05-18 | 2016-08-24 | 常州市环华机械有限公司 | Internal thread mold for cold-rolled pipe |
| CN105880288B (en) * | 2016-05-18 | 2017-11-24 | 常州市环华机械有限公司 | A kind of cold rolled tube internal thread mould |
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