CN101961829A - Bolt molding process requiring chamfering and milling multiple grooves - Google Patents

Bolt molding process requiring chamfering and milling multiple grooves Download PDF

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Publication number
CN101961829A
CN101961829A CN 201010501895 CN201010501895A CN101961829A CN 101961829 A CN101961829 A CN 101961829A CN 201010501895 CN201010501895 CN 201010501895 CN 201010501895 A CN201010501895 A CN 201010501895A CN 101961829 A CN101961829 A CN 101961829A
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China
Prior art keywords
chamfering
screw rod
bolt
multiple grooves
groove
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CN 201010501895
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Chinese (zh)
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CN101961829B (en
Inventor
郑守田
郑小兰
赵志伟
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Zhejiang Mingtai Holding Development Co., Ltd.
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ZHEJIANG MINGTAI STANDARD PARTS CO Ltd
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Priority to CN2010105018959A priority Critical patent/CN101961829B/en
Publication of CN101961829A publication Critical patent/CN101961829A/en
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Publication of CN101961829B publication Critical patent/CN101961829B/en
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Abstract

The invention provides a bolt molding process requiring chamfering and milling multiple grooves, and mainly solves the problem of complicated manufacture process and low production efficiency of the conventional bolt requiring chamfering and milling multiple grooves. The bolt molding process requiring chamfering and milling multiple grooves comprises the following steps: (1) cold upsetting: manufacturing a nut (1), a screw rod (2), a chamfer (3) at the front end of the screw rod (2) and a groove in turn respectively, wherein the mould of the cold upsetting groove (4) is made of two materials with different hardness, the material stamping the groove part has hardness lower than the material stamping other positions, and has certain toughness; and (2) thread rolling: manufacturing threads (5) on the screw rod (2) by using a thread rolling machine. The bolt molding process requiring chamfering and milling multiple grooves has simple steps and high production efficiency.

Description

Need chamfering and mill the bolt moulding process of multiple-grooved
Technical field
The present invention relates to a kind of processing method of bolt, especially need chamfering and mill the bolt moulding process of multiple-grooved.
Background technology
At present, there is a kind of end of bolt to be provided with chamfering and the sidewall in the end has groove,, is mainly used in the ground connection of electric product, be convenient to screw in and be embedded in the underground metalwork as earth stud.Above-mentioned this bolt is adding man-hour mainly according to the following steps: 1, cold-heading processes nut and screw rod; 2, car chamfering goes out chamfering in the turning of the end of screw rod; 3, groove milling, cold-heading mould routinely is difficult to cold-heading and goes out groove, and the phenomenon of mould fracture can take place, and therefore adopts milling machine to mill out groove usually; 4, thread rolling is with the outer screw thread of thread rolling machine processing screw rod.The existing processing technology complexity that needs chamfering and mill the bolt of multiple-grooved, production efficiency is low.
Summary of the invention
In order to overcome existing processing technology complexity and the low deficiency of production efficiency that needs chamfering and mill the bolt of multiple-grooved, the invention provides a kind of bolt moulding process that needs chamfering and mill multiple-grooved, this processing step is simple, the production efficiency height.
Technical scheme of the present invention is: this bolt moulding process that needs chamfering and mill multiple-grooved is processed according to the following steps:
Figure 2010105018959100002DEST_PATH_IMAGE001
Cold-heading processes the chamfering and the groove of nut, screw rod, screw front end successively respectively, and cover adopts two kinds of materials that hardness is different in the mould of cold-heading groove, and the material hardness at other position of the relative punching press of material of stamped recess part is low and have a certain toughness;
Figure 659658DEST_PATH_IMAGE002
Thread rolling utilizes thread rolling machine to process screw thread on the screw rod.
The present invention has following beneficial effect: owing to take such scheme, simplified the production technology that needs chamfering and mill the bolt of multiple-grooved, compared with prior art, the production efficiency height.
Description of drawings
Accompanying drawing 1 is the structural representation of earth stud among the present invention.
Accompanying drawing 2 is that the A of Fig. 1 is to view.
1-nut among the figure, 2-screw rod, 3-chamfering, 4-groove, 5-screw thread.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
By shown in Figure 1, this bolt moulding process that needs chamfering and mill multiple-grooved is processed according to the following steps:
Figure 926692DEST_PATH_IMAGE001
Cold-heading, process the chamfering 3 and the groove 4 of nut 1, screw rod 2, screw rod 2 front ends successively respectively, cover adopts two kinds of materials that hardness is different in the mould of cold-heading groove 4, and the material hardness at other position of the relative punching press of material of stamped recess part is low and have a certain toughness; When cold-heading groove 4, mould just can not rupture, and has realized that cold-heading processing needs chamfering and mills the blank of the bolt of multiple-grooved; The mould internal upper part divide to adopt the higher carbide alloy (as CD650) of hardness, and relatively low and the carbide alloy (as YT15 or YT20) with certain toughness of hardness is adopted in the lower part of respective slot 4.
Figure 63275DEST_PATH_IMAGE002
Thread rolling utilizes thread rolling machine to process screw thread 5 on the screw rod 2.
The present invention has compared with prior art simplified the production technology that needs chamfering and mill the bolt of multiple-grooved, has improved production efficiency.

Claims (1)

1. a bolt moulding process that needs chamfering and mill multiple-grooved, processing according to the following steps:
Figure 397268DEST_PATH_IMAGE001
Cold-heading, process the chamfering (3) and the groove (4) of nut (1), screw rod (2), screw rod (2) front end successively respectively, cover adopts two kinds of materials that hardness is different in the mould of cold-heading groove (4), and the material hardness at other position of the relative punching press of material of stamped recess part is low and have a certain toughness;
Figure 730160DEST_PATH_IMAGE002
Thread rolling utilizes thread rolling machine to process screw thread (5) on the screw rod (2).
CN2010105018959A 2010-10-10 2010-10-10 Bolt molding process requiring chamfering and milling multiple grooves Active CN101961829B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105018959A CN101961829B (en) 2010-10-10 2010-10-10 Bolt molding process requiring chamfering and milling multiple grooves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105018959A CN101961829B (en) 2010-10-10 2010-10-10 Bolt molding process requiring chamfering and milling multiple grooves

Publications (2)

Publication Number Publication Date
CN101961829A true CN101961829A (en) 2011-02-02
CN101961829B CN101961829B (en) 2012-05-16

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102240775A (en) * 2011-05-09 2011-11-16 江苏华灿电讯股份有限公司 Feeder fixture nozzle-lathed bolt molding process
CN102275065A (en) * 2011-06-15 2011-12-14 宁波达峰机械有限公司 Cold extruding forming process for automobile fastening decollation bolt
CN102310311A (en) * 2011-06-15 2012-01-11 宁波达峰机械有限公司 Bolt point-cutting cold heading molding process used for fastening automobile
CN103962809A (en) * 2014-05-21 2014-08-06 贵州航锐航空精密零部件制造有限公司 Manufacturing method for 17-4PH screw
CN103978347A (en) * 2014-05-26 2014-08-13 张家港市锦力标准件制造有限公司 Production process of bolt of battledore
CN104209701A (en) * 2014-08-15 2014-12-17 宾科汽车紧固件（昆山）有限公司 Production process for automobile sensor cup body
CN106541061A (en) * 2016-12-28 2017-03-29 日泰（上海）汽车标准件有限公司 A kind of die bolt with fluting screw thread and processing technique
CN108213315A (en) * 2018-01-04 2018-06-29 泰州市海陵区新科金属制品厂 A kind of processing technology of the shaft core of display bracket
CN108608166A (en) * 2016-12-12 2018-10-02 中国航空工业标准件制造有限责任公司 There is the stud processing method of keyway on a kind of screw thread
CN109332564A (en) * 2018-09-27 2019-02-15 舟山市7412工厂 The processing method that pressing-riveting bolt rubs frid service life with the hands can be extended
CN109773101A (en) * 2018-12-19 2019-05-21 常熟市常力紧固件有限公司 A kind of moulding process of scrapings slot bolt
CN111037240A (en) * 2020-01-09 2020-04-21 深圳航空标准件有限公司 Manufacturing process of grounding bolt of automobile and grounding bolt thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB617905A (en) * 1945-04-21 1949-02-14 Waterbury Farrel Foundry Co Improvements in or relating to screw blanks
JPH10211540A (en) * 1997-01-29 1998-08-11 Nikko Seira Seisakusho:Kk Manufacture of hexagonal headed bolt
CN1367052A (en) * 2000-08-17 2002-09-04 内克赞斯公司 Equipment for making ring waveform metal pipe
CN201555164U (en) * 2009-12-17 2010-08-18 华映视讯（吴江）有限公司 Wire fastener structure and backlight module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB617905A (en) * 1945-04-21 1949-02-14 Waterbury Farrel Foundry Co Improvements in or relating to screw blanks
JPH10211540A (en) * 1997-01-29 1998-08-11 Nikko Seira Seisakusho:Kk Manufacture of hexagonal headed bolt
CN1367052A (en) * 2000-08-17 2002-09-04 内克赞斯公司 Equipment for making ring waveform metal pipe
CN201555164U (en) * 2009-12-17 2010-08-18 华映视讯（吴江）有限公司 Wire fastener structure and backlight module

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102240775A (en) * 2011-05-09 2011-11-16 江苏华灿电讯股份有限公司 Feeder fixture nozzle-lathed bolt molding process
CN102275065A (en) * 2011-06-15 2011-12-14 宁波达峰机械有限公司 Cold extruding forming process for automobile fastening decollation bolt
CN102310311A (en) * 2011-06-15 2012-01-11 宁波达峰机械有限公司 Bolt point-cutting cold heading molding process used for fastening automobile
CN103962809A (en) * 2014-05-21 2014-08-06 贵州航锐航空精密零部件制造有限公司 Manufacturing method for 17-4PH screw
CN103978347A (en) * 2014-05-26 2014-08-13 张家港市锦力标准件制造有限公司 Production process of bolt of battledore
CN104209701A (en) * 2014-08-15 2014-12-17 宾科汽车紧固件（昆山）有限公司 Production process for automobile sensor cup body
CN108608166A (en) * 2016-12-12 2018-10-02 中国航空工业标准件制造有限责任公司 There is the stud processing method of keyway on a kind of screw thread
CN106541061A (en) * 2016-12-28 2017-03-29 日泰（上海）汽车标准件有限公司 A kind of die bolt with fluting screw thread and processing technique
CN108213315A (en) * 2018-01-04 2018-06-29 泰州市海陵区新科金属制品厂 A kind of processing technology of the shaft core of display bracket
CN109332564A (en) * 2018-09-27 2019-02-15 舟山市7412工厂 The processing method that pressing-riveting bolt rubs frid service life with the hands can be extended
CN109773101A (en) * 2018-12-19 2019-05-21 常熟市常力紧固件有限公司 A kind of moulding process of scrapings slot bolt
CN111037240A (en) * 2020-01-09 2020-04-21 深圳航空标准件有限公司 Manufacturing process of grounding bolt of automobile and grounding bolt thereof

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Address after: 325000 Binhai No. 8 Road 519, Wenzhou Economic and Technological Development Zone, Zhejiang Province

Patentee after: Zhejiang Mingtai Holding Development Co., Ltd.

Address before: 325025 No. 110 Merchants Road, Haicheng Industrial City, Longwan District, Wenzhou City, Zhejiang Province

Patentee before: Zhejiang Mingtai Standard Parts Co., Ltd.