CN202683878U - Rounded crest chip-containing diagonal-thread cylindrical die roll - Google Patents
Rounded crest chip-containing diagonal-thread cylindrical die roll Download PDFInfo
- Publication number
- CN202683878U CN202683878U CN 201220309108 CN201220309108U CN202683878U CN 202683878 U CN202683878 U CN 202683878U CN 201220309108 CN201220309108 CN 201220309108 CN 201220309108 U CN201220309108 U CN 201220309108U CN 202683878 U CN202683878 U CN 202683878U
- Authority
- CN
- China
- Prior art keywords
- cylindrical die
- die roll
- tooth
- chip
- crest
- 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 rounded crest chip-containing diagonal-line cylindrical die roll. The cylindrical die roll comprises a cylindrical die roll body (1) and a central hole (2), wherein a key groove (3) is arranged at the edge of the central hole (2), the section of the cylindrical die roll body (1) is in a circular ring shape, tooth threads (4) are arranged on the outer surface of the cylindrical die roll body (1), tooth threads (4) are diagonal threads and are arranged along the axial direction which is perpendicular to the central hole (2), each of the tooth threads (4) can be divided into crests (5) and tooth bases (6), crests (5) are in arc shapes which protrude upwards, and chip-containing grooves (7) are arranged at the bottoms of tooth bases (6). According to the rounded crest chip-containing diagonal-line cylindrical die roll, the arc-shaped design is adopted, the friction stress is low during production, the service life of the cylindrical die roll is prolonged, waste chip grooves are arranged at the bottoms of tooth bases, redundant waste chips produced during processing can be collected, and the quality of bolts can be guaranteed.
Description
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 twill cylindrical die roll.
Background technology
Cylindrical die roll is to utilize the method for metal plastic deformation to roll out a kind of instrument of screw thread at screw-rolling machine, is applicable to process high-strength bolt.The crest of cylindrical die roll is flat-top at present, and it is stressed larger to rub in process of production, impaired easily, and then cylindrical die roll just can not use, and has shortened service life; In the process of bolt, can produce unnecessary scrap at cylindrical die roll in addition, affect to a certain extent the processing effect of bolt, the bolt poor quality who produces.
Summary of the invention
The purpose of this 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 twill cylindrical die roll.
The purpose of this utility model is achieved in that
A kind of crest circular arc holds bits twill cylindrical die roll, comprise cylindrical die roll body and centre bore, described centre bore edge is provided with keyway, the cross section of described cylindrical die roll body is annular, and the outer surface of described cylindrical die roll body is provided with the tooth line, and described tooth line is twill, described tooth line is arranged along the axial direction perpendicular to centre bore, described tooth line is divided into crest and root of the tooth, and described crest is the circular arc that raises up, and the bottom of described root of the tooth is provided with chip pocket.
The utility model crest circular arc holds bits twill cylindrical die roll, and the material of described cylindrical die roll body adopts medium carbon steel.
Compared with prior art, the beneficial effects of the utility model are:
The crest that the utility model crest circular arc holds bits twill 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.
Description of drawings
Fig. 1 is the vertical section structure schematic diagram that the utility model crest circular arc holds bits twill cylindrical die roll.
Fig. 2 is the cross section cutaway view that the utility model crest circular arc holds bits twill 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
The specific embodiment
Referring to Fig. 1～Fig. 3, the utility model crest circular arc holds bits twill cylindrical die roll, comprise cylindrical die roll body 1 and centre bore 2, described centre bore 2 edges are provided with keyway 3, the material of described cylindrical die roll body 1 adopts medium carbon steel, the cross section of described cylindrical die roll body 1 is annular, the outer surface of described cylindrical die roll body 1 is provided with tooth line 4, described tooth line 4 is twill, described tooth line 4 is arranged along the axial direction perpendicular to centre bore 2, described tooth line 4 is divided into crest 5 and root of the tooth 6, the circular arc of described crest 5 for raising up, and the bottom of described root of the tooth 6 is provided with chip pocket 7.
The crest 5 that the utility model crest circular arc holds bits twill 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 twill cylindrical die roll, comprise cylindrical die roll body (1) and centre bore (2), described centre bore (2) edge is provided with keyway (3), the cross section of described cylindrical die roll body (1) is annular, the outer surface of described cylindrical die roll body (1) is provided with tooth line (4), described tooth line (4) is twill, described tooth line (4) is arranged along the axial direction perpendicular to centre bore (2), described tooth line (4) is divided into crest (5) and root of the tooth (6), it is characterized in that: the circular arc of described crest (5) for raising up, the bottom of described root of the tooth (6) is provided with chip pocket (7).
2. a kind of crest circular arc according to claim 1 holds bits twill cylindrical die roll, and it is characterized in that: the material of described cylindrical die roll body (1) adopts medium carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309108 CN202683878U (en) | 2012-06-29 | 2012-06-29 | Rounded crest chip-containing diagonal-thread cylindrical die roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309108 CN202683878U (en) | 2012-06-29 | 2012-06-29 | Rounded crest chip-containing diagonal-thread cylindrical die roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202683878U true CN202683878U (en) | 2013-01-23 |
Family
ID=47539550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220309108 Expired - Fee Related CN202683878U (en) | 2012-06-29 | 2012-06-29 | Rounded crest chip-containing diagonal-thread cylindrical die roll |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202683878U (en) |
-
2012
- 2012-06-29 CN CN 201220309108 patent/CN202683878U/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: 20130123 Termination date: 20130629 |