CN103506535A - Crest arc oblique line thread rolling wheel with guiding angles - Google Patents
Crest arc oblique line thread rolling wheel with guiding angles Download PDFInfo
- Publication number
- CN103506535A CN103506535A CN201210238255.2A CN201210238255A CN103506535A CN 103506535 A CN103506535 A CN 103506535A CN 201210238255 A CN201210238255 A CN 201210238255A CN 103506535 A CN103506535 A CN 103506535A
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- China
- Prior art keywords
- crest
- tooth
- rolling wheel
- thread rolling
- cylindrical die
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Abstract
The invention relates to a crest arc oblique line thread rolling wheel with guiding angles. The crest arc oblique line thread rolling wheel comprises a thread rolling wheel body (1). Tooth lines (4) are arranged on the outer surface of the thread rolling wheel body (1). The number of the tooth lines (4) is at least two. Each tooth line (4) is arranged in the axial direction perpendicular to a center hole (2). Each tooth line (4) is divided into a crest (5) and a tooth root (6). Each crest (5) is in an upward protruding arc shape. The guiding angles alpha exist between straight lines where the crests (5) and the tooth roots (6) are placed. According to the crest arc oblique line thread rolling wheel with the guiding angles, tooth depth is gradually increased, the certain guiding angles are achieved, pressed-rolled screw rods are high in intensity, good in quality and not easy to break, the crests are designed to be in the arc shape, friction force is small during a production process, and the service life of the thread rolling wheel is prolonged.
Description
(1) technical field
The present invention relates to a kind of cylindrical die roll, relate in particular to a kind of crest circular arc twill 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 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; The crest of cylindrical die roll is flat-top at present, rubs in process of production stressed larger, and easily impaired, then cylindrical die roll just can not have been used, and has shortened service life.
(3) summary of the invention
The object of the invention is to overcome above-mentioned deficiency, providing a kind of has guide angle, depth of threat to become gradually large and the stressed less crest circular arc twill cylindrical die roll that contains guide angle that rubs.
The object of the present invention is achieved like this:
A kind of crest circular arc twill 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 twill, 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, described crest is the circular arc raising up, and between described a plurality of crests and the straight line at a plurality of roots of the tooth place, has guide angle α.
The crest circular arc twill 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 the crest circular arc twill cylindrical die roll that the present invention contains guide angle becomes greatly gradually, has certain guide angle, makes the intensity of nip drum screw rod out high, quality good, is not easy fracture; Crest adopts circular arc design, rubs in process of production stressed less, has extended the service life of cylindrical die roll.
(4) accompanying drawing explanation
Fig. 1 is the vertical section structure schematic diagram of the present invention's crest circular arc twill cylindrical die roll of containing guide angle.
Fig. 2 is the cross section cutaway view of the present invention's crest circular arc twill 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.
(5) specific embodiment
Referring to Fig. 1～Fig. 3, the crest circular arc twill 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 twill, 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 circular arc of described crest 5 for raising up, 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 the crest circular arc twill cylindrical die roll that the present invention contains guide angle becomes greatly gradually, has certain guide angle, makes the intensity of nip drum screw rod out high, quality good, is not easy fracture; Crest 4 adopts circular arc design, rubs in process of production stressed less, has extended the service life of cylindrical die roll.
Claims (2)
1. a crest circular arc twill cylindrical die roll that contains guide angle, 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 twill, 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 circular arc of described crest (5) for raising up, 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 crest circular arc twill 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 |
|---|---|---|---|
| CN201210238255.2A CN103506535A (en) | 2012-06-30 | 2012-06-30 | Crest arc oblique line thread rolling wheel with guiding angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210238255.2A CN103506535A (en) | 2012-06-30 | 2012-06-30 | Crest arc oblique line thread rolling wheel with guiding angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103506535A true CN103506535A (en) | 2014-01-15 |
Family
ID=49890262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210238255.2A Pending CN103506535A (en) | 2012-06-30 | 2012-06-30 | Crest arc oblique line thread rolling wheel with guiding angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103506535A (en) |
-
2012
- 2012-06-30 CN CN201210238255.2A patent/CN103506535A/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 |