CN103506529A - Scrap-containing straight-thread thread rolling die having guide angle - Google Patents
Scrap-containing straight-thread thread rolling die having guide angle Download PDFInfo
- Publication number
- CN103506529A CN103506529A CN201210209876.8A CN201210209876A CN103506529A CN 103506529 A CN103506529 A CN 103506529A CN 201210209876 A CN201210209876 A CN 201210209876A CN 103506529 A CN103506529 A CN 103506529A
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- China
- Prior art keywords
- thread
- guide angle
- scrap
- cylindrical die
- die roll
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Abstract
The invention relates to a scrap-containing straight-thread thread rolling die having a guide angle. The scrap-containing straight-thread 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) and are at least two in number, each thread (4) is arranged in the direction perpendicular to the axial direction of a central hole (2), each thread (4) is evenly divided into crests (5) and thread roots (6), the bottom of each thread root (6) is provided with a scrap containing groove (7), and the guide angle alpha is formed between the straight line where the crests (5) are located and the straight line where thread roots (6) are located. According to the scrap-containing straight-thread thread rolling die having the guide angle, the thread depths are increased gradually, the certain guide angle is formed, so that a threaded rod rolled through the scrap-containing straight-thread thread rolling die is high in intensity, good in quality and not prone to fracture; the scrap containing grooves formed in the bottoms of the thread roots can collect residual scraps produced in a machining process, and the quality of a bolt is guaranteed.
Description
Technical field
The present invention relates to a kind of cylindrical die roll, relate in particular to a kind of appearance bits straight burr cylindrical die roll that contains guide angle.
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 process high-strength bolt.The depth of threat of cylindrical die roll is consistent at present, and crest is identical to the degree of depth of root of the tooth, and so the intensity of nip drum screw rod is out not high, easily fracture; In the process of bolt, on cylindrical die roll, can produce unnecessary scrap, affected to a certain extent the processing effect of bolt, the bolt poor quality who produces.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of appearance that contains guide angle bits straight burr cylindrical die roll that has guide angle, depth of threat to become gradually large and can collect unnecessary scrap is provided.
The object of the present invention is achieved like this:
A kind of appearance bits straight burr cylindrical die roll that contains guide angle, 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, the outer surface of described cylindrical die roll body is provided with tooth line, described tooth line has two at least, described each tooth line is straight burr, described each tooth line is arranged along the axial direction perpendicular to centre bore, described each tooth line is divided into crest and root of the tooth, the bottom of described root of the tooth is provided with chip pocket, between described a plurality of crests and the straight line at a plurality of roots of the tooth place, has guide angle α.
The appearance bits straight burr cylindrical die roll that the present invention contains guide angle, the material of described cylindrical die roll body adopts medium carbon steel.
Compared with prior art, the invention has the beneficial effects as follows:
The depth of threat of appearance that the present invention contains guide angle bits straight burr cylindrical die roll becomes greatly gradually, has certain guide angle, makes the intensity of nip drum screw rod out high, quality good, is not easy to rupture; The bottom of root of the tooth is provided with scrap groove, can be collected in the unnecessary scrap producing in the process of processing, has guaranteed the quality of bolt.
Accompanying drawing explanation
Fig. 1 is the vertical section structure schematic diagram of the present invention's appearance bits straight burr cylindrical die roll of containing guide angle.
Fig. 2 is the cross section cutaway view of the present invention's appearance bits straight burr cylindrical die roll of containing guide angle.
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 appearance bits straight burr cylindrical die roll that the present invention contains guide angle, 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 has two at least, described tooth line 4 is straight burr, described each tooth line 4 is arranged along the axial direction perpendicular to centre bore 2, described each tooth line 4 is divided into crest 5 and root of the tooth 6, the bottom of described root of the tooth 6 is provided with chip pocket 7, between the straight line at described a plurality of crest 5 and a plurality of root of the tooth 6 places, there is guide angle α.
The depth of threat of appearance that the present invention contains guide angle bits straight burr cylindrical die roll becomes greatly gradually, has certain guide angle, makes the intensity of nip drum screw rod out high, quality good, is not easy to rupture; In the bottom of root of the tooth 6, be provided with chip pocket 7, can be collected in the unnecessary scrap producing in bolt process, guaranteed the quality of bolt.
Claims (2)
1. an appearance that contains guide angle is considered straight burr cylindrical die roll to be worth doing, 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) has two at least, described each tooth line (4) is straight burr, described each tooth line (4) is arranged along the axial direction perpendicular to centre bore (2), described each tooth line (4) is divided into crest (5) and root of the tooth (6), it is characterized in that: the bottom of described root of the tooth (6) is provided with chip pocket (7), between the straight line at described a plurality of crest (5) and a plurality of root of the tooth (6) place, there is guide angle α.
2. a kind of appearance bits straight burr cylindrical die roll that contains guide angle according to claim 1, 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 |
|---|---|---|---|
| CN201210209876.8A CN103506529A (en) | 2012-06-25 | 2012-06-25 | Scrap-containing straight-thread thread rolling die having guide angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210209876.8A CN103506529A (en) | 2012-06-25 | 2012-06-25 | Scrap-containing straight-thread thread rolling die having guide angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103506529A true CN103506529A (en) | 2014-01-15 |
Family
ID=49890256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210209876.8A Pending CN103506529A (en) | 2012-06-25 | 2012-06-25 | Scrap-containing straight-thread thread rolling die having guide angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103506529A (en) |
-
2012
- 2012-06-25 CN CN201210209876.8A patent/CN103506529A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |