CN202621796U - Straight grain thread rolling wheel capable of accommodating scraps and provided with circular arc crests - Google Patents
Straight grain thread rolling wheel capable of accommodating scraps and provided with circular arc crests Download PDFInfo
- Publication number
- CN202621796U CN202621796U CN 201220322387 CN201220322387U CN202621796U CN 202621796 U CN202621796 U CN 202621796U CN 201220322387 CN201220322387 CN 201220322387 CN 201220322387 U CN201220322387 U CN 201220322387U CN 202621796 U CN202621796 U CN 202621796U
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- CN
- China
- Prior art keywords
- rolling wheel
- circular arc
- thread rolling
- 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 wheel which is capable of accommodating scraps and is provided with circular arc crests. The straight grain thread rolling wheel comprises a thread rolling wheel body (1) and a central hole (2), wherein a key groove (3) is formed in the edge of the central hole (2); the cross section of the thread rolling wheel body (1) is in an annular shape; tooth grains (4) are arranged on the outer surface of the thread rolling wheel body (1), are straight grains, are arranged along the direction which is perpendicular to the axial direction of the central hole (2) and are divided into crests (5) and tooth roots (6); the crests (5) which are bulged upwards are in a circular arc shape; and scrap accommodating grooves (7) are formed in the bottoms of the tooth roots (6). According to the straight grain thread rolling wheel, the crests are in a circular arc shape, so that the friction force in the production process is small, and the service life of the thread rolling wheel is prolonged; and the scrap accommodating grooves are formed in the bottoms of the tooth roots, so that residual waste scraps generated in the machining process can be collected, and the quality of bolts is ensured.
Description
(1) technical field
The utility model relates to a kind of cylindrical die roll, relates in particular to a kind of crest circular arc and holds bits straight burr 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; In the process of bolt, on cylindrical die roll, can produce unnecessary scrap in addition, influence the processing effect of bolt to a certain extent, the bolt poor quality who is produced.
(3) summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, provides a kind of stressed less and crest circular arc that can collect unnecessary scrap that rubs to hold bits straight burr cylindrical die roll.
The purpose of the utility model is achieved in that
A kind of crest circular arc holds bits straight burr 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, and the outer surface of said cylindrical die roll body is provided with the tooth line, and said tooth line is a straight burr; 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, and the bottom of said root of the tooth is provided with chip pocket.
The utility model crest circular arc holds bits straight burr cylindrical die roll, and 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 that the utility model crest circular arc holds bits straight burr 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; The bottom of root of the tooth is provided with the scrap groove, can be collected in the unnecessary scrap that produces in the process of processing, has guaranteed the quality of bolt.
(4) description of drawings
Fig. 1 is the vertical section structure sketch map that the utility model crest circular arc holds bits straight burr cylindrical die roll.
Fig. 2 is the cross section cutaway view that the utility model crest circular arc holds bits straight burr 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 crest circular arc holds bits straight burr 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; Said tooth line 4 is a straight burr, and said tooth line 4 arranges that 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 bottom of said root of the tooth 6 is provided with chip pocket 7.
The crest 5 that the utility model crest circular arc holds bits straight burr 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; Be provided with chip pocket 7 in the bottom of root of the tooth 6, can be collected in the unnecessary scrap that produces in the bolt process, guaranteed the quality of bolt.
Claims (2)
1. a crest circular arc holds bits straight burr cylindrical die roll; Comprise cylindrical die roll body (1) and centre bore (2), said centre bore (2) edge is provided with keyway (3), 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); Said tooth line (4) is a straight burr, and said tooth line (4) arranges that 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, the bottom of said root of the tooth (6) is provided with chip pocket (7).
2. a kind of crest circular arc according to claim 1 holds bits straight burr cylindrical die roll, and it 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 201220322387 CN202621796U (en) | 2012-06-22 | 2012-06-22 | Straight grain thread rolling wheel capable of accommodating scraps and provided with circular arc crests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322387 CN202621796U (en) | 2012-06-22 | 2012-06-22 | Straight grain thread rolling wheel capable of accommodating scraps and provided with circular arc crests |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621796U true CN202621796U (en) | 2012-12-26 |
Family
ID=47375039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322387 Expired - Fee Related CN202621796U (en) | 2012-06-22 | 2012-06-22 | Straight grain thread rolling wheel capable of accommodating scraps and provided with circular arc crests |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621796U (en) |
-
2012
- 2012-06-22 CN CN 201220322387 patent/CN202621796U/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: 20130622 |