CN202621785U - Straight grain thread rolling die with circular arc crests - Google Patents
Straight grain thread rolling die with circular arc crests Download PDFInfo
- Publication number
- CN202621785U CN202621785U CN 201220238621 CN201220238621U CN202621785U CN 202621785 U CN202621785 U CN 202621785U CN 201220238621 CN201220238621 CN 201220238621 CN 201220238621 U CN201220238621 U CN 201220238621U CN 202621785 U CN202621785 U CN 202621785U
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- CN
- China
- Prior art keywords
- circular arc
- thread rolling
- rolling die
- cylindrical die
- die roll
- Prior art date
- 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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Abstract
The utility model relates to a straight grain thread rolling die with circular arc crests. The straight grain thread rolling die comprises a thread rolling die body (1) and a central hole (2), a key groove (3) is arranged at the edge of the central hole (2), the section of the thread rolling die body (1) is in a circular ring shape, threads (4) which are straight grains are arranged on the outer surface of the thread rolling die body (1) along the direction perpendicular to the axial direction of the central hole (2), each of the threads (4) comprises a crest (5) and a root (6), and the crest (5) is in a circular arc shape which is protruded upwards. According to the straight grain thread rolling die with the circular arc crests, the crests are designed to be in a circular arc shape so that friction forces are small during the production process, and the service life of the thread rolling die is prolonged.
Description
(1) technical field
The utility model relates to a kind of cylindrical die roll, relates in particular to a kind of straight burr crest circular arc cylindrical die roll.
(2) background technology
Cylindrical die roll is on screw-rolling machine, to utilize the method for metal plastic deformation to roll out a kind of instrument of screw thread, is applicable to the processing high-strength bolt.The crest of cylindrical die roll is a flat-top at present, and it is stressed bigger to rub in process of production, impaired easily, and cylindrical die roll just can not use then, has shortened service life.
(3) summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of stressed less straight burr crest circular arc cylindrical die roll that rubs is provided.
The purpose of the utility model is achieved in that
A kind of straight burr crest circular arc cylindrical die roll comprises cylindrical die roll body and centre bore, and said centre bore edge is provided with keyway; The cross section of said cylindrical die roll body is annular; The outer surface of said cylindrical die roll body is provided with the tooth line, and said tooth line is a straight burr, and said tooth line is arranged along the axial direction perpendicular to centre bore; Said tooth line is divided into crest and root of the tooth, and said crest is the circular arc that raises up.
The utility model straight burr crest circular arc cylindrical die roll, the material of said cylindrical die roll body adopts medium carbon steel.
Compared with prior art, the beneficial effect of the utility model is:
The crest of the utility model straight burr crest circular arc cylindrical die roll adopts the circular arc design, and it is stressed less to rub in process of production, has prolonged the service life of cylindrical die roll.
(4) description of drawings
Fig. 1 is the vertical section structure sketch map of the utility model straight burr crest circular arc cylindrical die roll.
Fig. 2 is the cross section cutaway view of the utility model straight burr crest circular arc cylindrical die roll.
Fig. 3 is the structural representation of screw thread.
Wherein:
Cylindrical die roll body 1
Centre bore 2
Keyway 3
Tooth line 4
Crest 5
Root of the tooth 6.
(5) specific embodiment
Referring to Fig. 1～Fig. 3, the utility model straight burr crest circular arc cylindrical die roll comprises cylindrical die roll body 1 and centre bore 2; Said centre bore 2 edges are provided with keyway 3, and the material of said cylindrical die roll body 1 adopts medium carbon steel, and the cross section of said cylindrical die roll body 1 is annular; The outer surface of said cylindrical die roll body 1 is provided with tooth line 4, and said tooth line 4 is a straight burr, and said tooth line 4 is arranged along the axial direction perpendicular to centre bore 2; Said tooth line 4 is divided into crest 5 and root of the tooth 6, the circular arc of said crest 5 for raising up.
The crest 5 of the utility model straight burr crest circular arc cylindrical die roll adopts the circular arc design, and it is stressed less to rub in process of production, has prolonged the service life of cylindrical die roll.
Claims (2)
1. a straight burr crest circular arc cylindrical die roll comprises cylindrical die roll body (1) and centre bore (2), and said centre bore (2) edge is provided with keyway (3); The cross section of said cylindrical die roll body (1) is annular; The outer surface of said cylindrical die roll body (1) is provided with tooth line (4), and said tooth line (4) is a straight burr, and said tooth line (4) is arranged along the axial direction perpendicular to centre bore (2); Said tooth line (4) is divided into crest (5) and root of the tooth (6), it is characterized in that: the circular arc of said crest (5) for raising up.
2. a kind of straight burr crest circular arc cylindrical die roll according to claim 1 is characterized in that: the material of said cylindrical die roll body (1) adopts medium carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238621 CN202621785U (en) | 2012-05-16 | 2012-05-16 | Straight grain thread rolling die with circular arc crests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238621 CN202621785U (en) | 2012-05-16 | 2012-05-16 | Straight grain thread rolling die with circular arc crests |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621785U true CN202621785U (en) | 2012-12-26 |
Family
ID=47375028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220238621 Expired - Fee Related CN202621785U (en) | 2012-05-16 | 2012-05-16 | Straight grain thread rolling die with circular arc crests |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621785U (en) |
-
2012
- 2012-05-16 CN CN 201220238621 patent/CN202621785U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130516 |