CN202621795U - Wear-resisting scrap-accommodating straight grain thread rolling die with circular arc crests and guiding angles - Google Patents
Wear-resisting scrap-accommodating straight grain thread rolling die with circular arc crests and guiding angles Download PDFInfo
- Publication number
- CN202621795U CN202621795U CN 201220322288 CN201220322288U CN202621795U CN 202621795 U CN202621795 U CN 202621795U CN 201220322288 CN201220322288 CN 201220322288 CN 201220322288 U CN201220322288 U CN 201220322288U CN 202621795 U CN202621795 U CN 202621795U
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- thread rolling
- rolling die
- circular arc
- wear
- crest
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Abstract
The utility model relates to a wear-resisting scrap-accommodating straight grain thread rolling die with circular arc crests and guiding angles. The thread rolling die comprises a thread rolling die body (1), threads (4) are arranged on the outer surface of the thread rolling die body (1) along the direction perpendicular to the axial direction of a central hole (2), each of the threads (4) comprises a crest (5) and a root (6), the crest (5) is in a circular arc shape which is protruded upwards, a scrap accommodating slot (8) is arranged at the bottom of the root (6) a straight line where a plurality of the crests (5) are located and a straight line where a plurality of the roots (6) are located form the guiding angle alpha, and a coating (7) is arranged outside the threads (4). According to the wear-resisting scrap-accommodating straight grain thread rolling die with the circular arc crests and the guiding angles, the thread rolling die has the guiding angles so that rolled screws are high in strength, good in qualities and difficult to fracture; the thread rolling die is good in wear resistance and capable of prolonging the service life and reducing production costs; and the thread rolling die bears small friction forces, the scrap accommodating slot can collect redundant scraps produced during processing, and qualities of bolts are guaranteed.
Description
(1) technical field
The utility model relates to a kind of cylindrical die roll, relates in particular to a kind of wear-resisting appearance bits of crest circular arc straight burr cylindrical die roll that contains guide angle.
(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.At present the depth of threat of cylindrical die roll is consistent, and promptly crest is identical to the degree of depth of root of the tooth, and so the intensity of the screw rod that comes out of nip drum is not high, ruptures easily; The wearability of cylindrical die roll is bad in addition, and in the process of bolt, the long-term friction of bolt and wear-resisting cylindrical die roll damages easily, and service life is short, has increased production cost; The crest of cylindrical die roll is a flat-top, 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, influenced 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 and has guide angle, depth of threat to become gradually greatly, wearability is good, friction is stressed less and can collect the wear-resisting appearance bits of the crest circular arc that the contains guide angle straight burr cylindrical die roll of unnecessary scrap.
The purpose of the utility model is achieved in that
A kind of wear-resisting appearance bits of crest circular arc straight burr cylindrical die roll that contains guide angle 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 has two at least; Said each tooth line is straight burr; Said each tooth line arranges that along the axial direction perpendicular to centre bore said each tooth line is divided into crest and root of the tooth, and said crest is the circular arc that raises up; The bottom of said root of the tooth is provided with chip pocket; Have guide angle α between the straight line at said a plurality of crest and a plurality of root of the tooth place, the outside of said tooth line is provided with coating, and the material of said coating is a titanium.
The utility model contains the wear-resisting appearance bits of the crest circular arc straight burr cylindrical die roll of guide angle, 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 depth of threat that the utility model contains the wear-resisting appearance bits of the crest circular arc of guide angle straight burr cylindrical die roll becomes greatly gradually, and certain guide angle is arranged, and makes the intensity of the screw rod that nip drum comes out high, quality is good, is not easy to rupture; Scribble titanium layer in the tooth line outside, increased wearability, can prolong the service life of wear-resisting cylindrical die roll, also reduced production cost simultaneously; Crest 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 contains the vertical section structure sketch map of the wear-resisting appearance bits of the crest circular arc straight burr cylindrical die roll of guide angle for the utility model.
Fig. 2 contains the cross section cutaway view of the wear-resisting appearance bits of the crest circular arc straight burr cylindrical die roll of guide angle for the utility model.
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
Coating 7
Chip pocket 8.
(5) specific embodiment
Referring to Fig. 1～Fig. 3, the utility model contains the wear-resisting appearance bits of the crest circular arc straight burr cylindrical die roll of guide angle, 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 has two at least, and said tooth line 4 is straight burr; Said each tooth line 4 arranges that along the axial direction perpendicular to centre bore 2 said each 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 8; Have guide angle α between the straight line at said a plurality of crest 5 and a plurality of root of the tooth 6 places, the outside of said tooth line 4 is provided with coating 7, and the material of said coating 7 is a titanium.
The depth of threat that the utility model contains the wear-resisting appearance bits of the crest circular arc of guide angle straight burr cylindrical die roll becomes greatly gradually, and certain guide angle is arranged, and makes the intensity of the screw rod that nip drum comes out high, quality is good, is not easy to rupture; The outside at tooth line 4 scribbles titanium layer, has increased wearability, can prolong the service life of wear-resisting cylindrical die roll, has also reduced production cost simultaneously; Crest 5 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 8 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. the wear-resisting appearance bits of a crest circular arc straight burr cylindrical die roll that contains guide angle 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, and the outer surface of said cylindrical die roll body (1) is provided with tooth line (4), and said tooth line (4) has two at least; Said each tooth line (4) is straight burr; Said each tooth line (4) arranges that along the axial direction perpendicular to centre bore (2) said each 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 (8); Have guide angle α between the straight line at said a plurality of crest (5) and a plurality of root of the tooth (6) place, the outside of said tooth line (4) is provided with coating (7), and the material of said coating (7) is a titanium.
2. a kind of wear-resisting appearance bits of crest circular arc straight burr cylindrical die roll that contains guide angle according to claim 1, 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 201220322288 CN202621795U (en) | 2012-06-22 | 2012-06-22 | Wear-resisting scrap-accommodating straight grain thread rolling die with circular arc crests and guiding angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322288 CN202621795U (en) | 2012-06-22 | 2012-06-22 | Wear-resisting scrap-accommodating straight grain thread rolling die with circular arc crests and guiding angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621795U true CN202621795U (en) | 2012-12-26 |
Family
ID=47375038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322288 Expired - Fee Related CN202621795U (en) | 2012-06-22 | 2012-06-22 | Wear-resisting scrap-accommodating straight grain thread rolling die with circular arc crests and guiding angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621795U (en) |
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2012
- 2012-06-22 CN CN 201220322288 patent/CN202621795U/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 |