CN101963179A - Tubing bolt, molding process and mold thereof - Google Patents
Tubing bolt, molding process and mold thereof Download PDFInfo
- Publication number
- CN101963179A CN101963179A CN 201010501917 CN201010501917A CN101963179A CN 101963179 A CN101963179 A CN 101963179A CN 201010501917 CN201010501917 CN 201010501917 CN 201010501917 A CN201010501917 A CN 201010501917A CN 101963179 A CN101963179 A CN 101963179A
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- screw rod
- thread
- boss
- oil pipe
- strip groove
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Abstract
The invention discloses a tubing bolt, a molding process and a mold thereof, which mainly solves the problems of low strength and complex machining process in the conventional tubing bolt. The tubing bolt is characterized in that: a boss (4) is arranged at the joint between a screw (2) and a screw cap (1); and a bar groove (5) which is molded at a time by cold heading is arranged on the outer wall of the screw (2) along the axial direction. The molding process of the tubing bolt comprises the following steps of: cold heading, thread rolling, and heat treatment. The adopted special thread molding mold comprises thread rolling dies (6), wherein two thread rolling dies (6) are provided and are respectively provided with corresponding smooth bar clamping surfaces (7). The tubing bolt has high strength, is not easy to fracture, and has a simple molding process and high production efficiency; and the special thread molding mold can meet a requirement on an improved processing process and has a simple structure.
Description
Technical field
The present invention relates to a kind of special bolt, especially oil pipe bolt and moulding process thereof and mould.
Background technique
At present, the oil pipe bolt is the special bolt that connects oil pipe on the motor, and its structure mainly is made up of nut and screw rod, and screw rod is a hollow-core construction, is provided with the radial direction through hole that runs through screw rod and communicate with the inside center hole at the outer wall of screw rod, on the outer wall of screw rod screw thread is arranged.In use, the oil pipe bolt fixedly also can make oil pass through from the radial direction through hole and the center hole of oil pipe bolt in the oil pipe, seal by screwing the oil pipe bolt between oil pipe bolt and the oil pipe, need certain pretightening force just can reach the effect of sealing to the oil pipe bolt, owing on the screw rod of oil pipe bolt center hole and radial direction through hole are arranged, be easy to produce stress herein and concentrate and rupture, intensity is low.This oil pipe bolt is divided into following step when processing: 1, cold-heading; 2, drill centers; 3, thread rolling; 4, bore radial direction through hole; 5 heat treatments.The processing technology complexity, manufacturing efficiency is low, and the flat die roll that is adopted when thread rolling is common flat die roll.
Summary of the invention
In order to overcome disadvantages of background technology, the invention provides a kind of oil pipe bolt and moulding process thereof, mainly solved the low and processing technology complicated problems of existing oil pipe bolt strength, a kind of thread forming mould of special use also is provided simultaneously.
Technological scheme of the present invention is: a kind of oil pipe bolt, comprise nut and screw rod, nut and screw rod are one, screw thread is arranged on the screw rod, joint with nut on the described screw rod is provided with boss, the outer wall upper edge of described screw rod is axially arranged with the one-time formed strip groove of cold-heading, and an end of strip groove runs through the termination of screw rod, and the other end of strip groove ends at boss.
Described strip groove is 2 and is symmetrically distributed along screw rod.
The present invention provides a kind of moulding process of above-mentioned oil pipe bolt simultaneously, mainly is divided into following steps:
The present invention provides a kind of shaping die of above-mentioned oil pipe bolt simultaneously, it mainly is the moulding that is used for screw thread, comprise flat die roll, described flat die roll is 2 and is respectively equipped with corresponding smooth bar shaped gripping surface that described bar shaped gripping surface is corresponding with the boss on the screw rod.
The present invention has following beneficial effect: owing to take such scheme, increased the area of being turned round the cross section of screw rod, improved the intensity of screw rod, in use easy-rupturing not.Also improve on processing technology simultaneously, simplified processing technology, operation is few, the work efficiency height.Designed the boss that is used for clamping on screw rod, the thread forming mould of design specialized is used for satisfying the demand of improved processing technology, and is simple in structure, the work efficiency height.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is A-A sectional views among Fig. 1.
Accompanying drawing 3 is structural representations of the shaping die of oil pipe bolt among the present invention.
1-nut among the figure, 2-screw rod, 3-screw thread, 4-boss, 5-strip groove, 6-flat die roll, 7-bar shaped gripping surface.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, this oil pipe bolt comprises nut 1 and screw rod 2, nut 1 and screw rod 2 are one, screw thread 3 is arranged on the screw rod 2, joint with nut 1 on the described screw rod 2 is provided with boss 4, the outer wall upper edge of described screw rod 2 is axially arranged with the one-time formed strip groove 5 of cold-heading, and an end of strip groove 5 runs through the termination of screw rod 2, and the other end of strip groove 5 ends at boss 4.Compare with background technique, increased the area of being turned round the cross section of screw rod 2, improved the intensity of screw rod 2, in use easy-rupturing not.
By shown in Figure 2, described strip groove 5 is 2 and is symmetrically distributed along screw rod 2.Cross-sectional sizes according to strip groove 5 also can be designed to a plurality of.
By shown in Figure 2, the cross section of described strip groove 5 is a half elliptic.The bottom surface rounding off of strip groove 5 avoids stress to concentrate.
Because the oil pipe bolt arrangement among the present invention changes, by Fig. 1 in conjunction with shown in Figure 3, adding man-hour, processing technology routinely needs first thread rolling to mill out strip groove 5 at the outer wall of screw rod 2 then, the processing technology complexity, therefore manufacturing efficiency is low, the invention provides a kind of moulding process of above-mentioned oil pipe bolt, mainly is divided into following steps:
This technology is simple, and operation is few, the work efficiency height.
Structure and processing technology requirement at above-mentioned oil pipe bolt, the invention provides a kind of shaping die of above-mentioned oil pipe bolt, it mainly is the moulding that is used for screw thread 3, by Fig. 1 in conjunction with Fig. 2 and shown in Figure 3, this shaping die comprises flat die roll 6, described flat die roll 6 is 2 and is respectively equipped with corresponding smooth bar shaped gripping surface 7 that described bar shaped gripping surface 7 is corresponding with the boss 4 on the screw rod 2.Because the outer wall of screw rod 2 has strip groove 5, as adopt common flat die roll 6 to carry out thread rolling, screw rod 2 turns to strip groove 5 places and can block motionless, can not realize the moulding of screw thread 3, therefore having designed boss 4 on screw rod 2 is used for clamping, and this shaping die is simple in structure as the special screw thread shaping die of oil pipe bolt among the present invention, the work efficiency height.
Claims (5)
1. oil pipe bolt, comprise nut (1) and screw rod (2), nut (1) and screw rod (2) are one, screw thread (3) is arranged on the screw rod (2), it is characterized in that: described screw rod (2) is gone up and the joint of nut (1) is provided with boss (4), the outer wall upper edge of described screw rod (2) is axially arranged with the one-time formed strip groove of cold-heading (5), and an end of strip groove (5) runs through the termination of screw rod (2), and the other end of strip groove (5) ends at boss (4).
2. oil pipe bolt according to claim 1 is characterized in that: described strip groove (5) is 2 and is symmetrically distributed along screw rod (2).
3. oil pipe bolt according to claim 1 and 2 is characterized in that: the cross section of described strip groove (5) is a half elliptic.
4. the moulding process of an oil pipe bolt according to claim 1 mainly is divided into following steps:
5. shaping die according to claim 1 or 4 described oil pipe bolts, it is characterized in that: comprise flat die roll (6), described flat die roll (6) is 2 and is respectively equipped with corresponding smooth bar shaped gripping surface (7) that described bar shaped gripping surface (7) is corresponding with the boss (4) on the screw rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501917 CN101963179A (en) | 2010-10-10 | 2010-10-10 | Tubing bolt, molding process and mold thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501917 CN101963179A (en) | 2010-10-10 | 2010-10-10 | Tubing bolt, molding process and mold thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101963179A true CN101963179A (en) | 2011-02-02 |
Family
ID=43516192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010501917 Pending CN101963179A (en) | 2010-10-10 | 2010-10-10 | Tubing bolt, molding process and mold thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101963179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386453A (en) * | 2013-07-29 | 2013-11-13 | 富奥汽车零部件股份有限公司 | Manufacturing method of multislot eccentric workpiece and cold heading reducing die |
| CN109604937A (en) * | 2018-11-09 | 2019-04-12 | 宾科汽车紧固件（昆山）有限公司 | The processing technology of oil circuit bolt |
| CN109794731A (en) * | 2018-12-12 | 2019-05-24 | 浙江国盛汽车科技股份有限公司 | A kind of hollow bolt and its processing technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87202069U (en) * | 1987-02-16 | 1988-07-13 | 宁文凯 | Needle valve bolt |
| JPH094623A (en) * | 1995-06-16 | 1997-01-07 | Honda Motor Co Ltd | Grooved bolt |
| JPH0921411A (en) * | 1995-07-05 | 1997-01-21 | Miura Seibiyoushiyo:Kk | Bolt with flow passage |
| CN101487490A (en) * | 2009-03-03 | 2009-07-22 | 张昌华 | Bolt connection piece locked by suit bolt nut |
-
2010
- 2010-10-10 CN CN 201010501917 patent/CN101963179A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87202069U (en) * | 1987-02-16 | 1988-07-13 | 宁文凯 | Needle valve bolt |
| JPH094623A (en) * | 1995-06-16 | 1997-01-07 | Honda Motor Co Ltd | Grooved bolt |
| JPH0921411A (en) * | 1995-07-05 | 1997-01-21 | Miura Seibiyoushiyo:Kk | Bolt with flow passage |
| CN101487490A (en) * | 2009-03-03 | 2009-07-22 | 张昌华 | Bolt connection piece locked by suit bolt nut |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386453A (en) * | 2013-07-29 | 2013-11-13 | 富奥汽车零部件股份有限公司 | Manufacturing method of multislot eccentric workpiece and cold heading reducing die |
| CN109604937A (en) * | 2018-11-09 | 2019-04-12 | 宾科汽车紧固件（昆山）有限公司 | The processing technology of oil circuit bolt |
| CN109794731A (en) * | 2018-12-12 | 2019-05-24 | 浙江国盛汽车科技股份有限公司 | A kind of hollow bolt and its processing technology |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110202 |