CN101963179A - Tubing bolt, molding process and mold thereof - Google Patents

Tubing bolt, molding process and mold thereof Download PDF

Info

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
Authority
CN
China
Prior art keywords
screw rod
thread
boss
oil pipe
bolt
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.)
Pending
Application number
CN 201010501917
Other languages
Chinese (zh)
Inventor
吴金其
郑小兰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG MINGTAI STANDARD PARTS CO Ltd
Original Assignee
ZHEJIANG MINGTAI STANDARD PARTS CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHEJIANG MINGTAI STANDARD PARTS CO Ltd filed Critical ZHEJIANG MINGTAI STANDARD PARTS CO Ltd
Priority to CN 201010501917 priority Critical patent/CN101963179A/en
Publication of CN101963179A publication Critical patent/CN101963179A/en
Pending legal-status Critical Current

Links

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

Oil pipe bolt and moulding process thereof and mould
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:
Cold-heading, the strip groove on the disposable outer wall that processes boss on nut, screw rod, the screw rod and screw rod;
The screw thread on the thread-rolling machine processing screw rod is adopted in thread rolling, and thread-rolling machine is provided with flat die roll, the boss on the described flat die roll clamping screw rod, and described boss is as the thread rolling rolling surface;
Heat treatment.
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:
Cold-heading, the strip groove 5 on the disposable outer wall that processes boss 4 on nut 1, screw rod 2, the screw rod 2 and screw rod 2;
The screw thread 3 on the thread-rolling machine processing screw rod 2 is adopted in thread rolling, and thread-rolling machine is provided with flat die roll 6, the boss 4 on described flat die roll 6 clamping screw rods 2, and described boss 4 is as the thread rolling rolling surface;
Heat treatment.
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:
Cold-heading, the strip groove (5) on the disposable outer wall that processes boss (4) on nut (1), screw rod (2), the screw rod (2) and screw rod (2);
The screw thread (3) on the thread-rolling machine processing screw rod (2) is adopted in thread rolling, and thread-rolling machine is provided with flat die roll (6), the boss (4) on described flat die roll (6) clamping screw rod (2), and described boss (4) is as the thread rolling rolling surface;
Heat treatment.
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).
CN 201010501917 2010-10-10 2010-10-10 Tubing bolt, molding process and mold thereof Pending CN101963179A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN106862475B (en) The cold upsetting production technique of interior hexagonal studs blank
CN102303090B (en) Device and method for compounding and forming central flange pipe joint from pipe blank in single-step and multi-directional way
CN101947567A (en) Processing technique and processing device of flat-head hexagon bolt for cold extrusion shaping cart
CN104226711A (en) Extrusion die with multiple corners and forming method thereof
CN203356523U (en) Manufacturing device for flange nut through cold heading
CN101963179A (en) Tubing bolt, molding process and mold thereof
CN106475502A (en) A kind of jag draws the manufacture method of cap blank
CN104209444A (en) Oil pipe joint cold heading device and production technology thereof
CN104399862A (en) Technology for producing R-shaped spherical metal joint
CN103240359B (en) Near-net forming method of high-strength internal hexagon bored bolt
CN202606763U (en) Cold heading forming die for tire bolts
CN205032617U (en) Cold -heading device of riveting nut is turned over to four corners flange orientation
CN103447770A (en) Method for manufacturing pipe clamp, pipe clamp and pipeline
CN101712108A (en) Method for manufacturing conical riser of direction column of motorcycle by adopting cold extrusion process
CN201815555U (en) Machining equipment for flat-head hexagon bolt of cold-extrusion forming vehicle
CN103252409B (en) Near-net forming die for high-strength internal hexagonal through-hole bolt
CN104963927A (en) Flanging and riveting self-locking nut and machining method thereof
CN202239461U (en) Die for coldly moulding brake pump piston
CN107377839A (en) The forming method of long sleeve
CN201802727U (en) Oil pipe bolt and machining mold thereof
CN203356946U (en) Manufacturing device of petroleum overall heavy weight drill pipe
CN102601240A (en) Dowel screw forming die
CN107413875B (en) Pipe extrusion forming die and forming method thereof
CN202087759U (en) Special die component for cold heading of wedge bolt
CN104550287A (en) Cold extrusion moulding device for tapered pipe

Legal Events

Date Code Title Description
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