CN102615239A - Processing process of wheel hub screw bolt for automobile - Google Patents
Processing process of wheel hub screw bolt for automobile Download PDFInfo
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- CN102615239A CN102615239A CN2012101132507A CN201210113250A CN102615239A CN 102615239 A CN102615239 A CN 102615239A CN 2012101132507 A CN2012101132507 A CN 2012101132507A CN 201210113250 A CN201210113250 A CN 201210113250A CN 102615239 A CN102615239 A CN 102615239A
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Abstract
The invention provides a processing process of a wheel hub screw bolt for an automobile. The processing process sequentially comprises the following operations of cold heading, thread rolling, heat treatment and surface treatment, wherein the cold heading is characterized in that a knurling forming mold (4) is arranged on a multi-station automatic cold forging machine, and a wheel hub screw bolt blank with reduced teeth at the knurling parts is formed through forging. The processing process has the advantages that the outer diameter of the knurling parts of the wheel hub screw bolt and the appearance of the teeth can be ensured to meet the production and assembly requirements, the production efficiency is high, and the processing cost is low.
Description
Technical field
The present invention relates to the machine components processing technique field, be specifically related to a kind of automobile and use the boss bolt processing technology.
Background technology
Automobile is a kind of common high-strength bolt on the automobile with boss bolt, comprises bolt head, screw portion and is positioned at both middle knurled portions, and about 6 of average each wheels of its use amount, market demand is very big.Orthodox car with the manufacturing procedure of boss bolt is: cold-heading → gear rolling → thread rolling → heat treatment → surface treatment.According to the handling characteristics of automobile with boss bolt, very high to the external diameter and the tooth outline requirement of its surface knurling part, do not allow to produce helical teeth and tooth footpath deviation and surpass 0.1mm; And common process process using gear rolling, the adjustment difficulty is big, rolled by last process before the footpath size to influence the tooth external diameter wayward, and be easy to generate oblique tooth, finally influence the matching requirements of bolt.
Summary of the invention
Technical problem to be solved by this invention provides a kind of automobile and uses the boss bolt processing technology, and this processing technology can guarantee boss bolt knurled portion external diameter and tooth outline accords with production and matching requirements, production efficiency is high, processing cost is low.
The technical scheme that the present invention adopted is:
A kind of automobile is used the boss bolt processing technology, and this technology is for carry out following operation in order: cold-heading, thread rolling, heat treatment, surface treatment.Cold-heading is meant installs the annular knurl mould on the multistation automatic cold former, forging and pressing form the boss bolt blank that knurled portion has the tooth that contracts.Promptly processing makes the formation screw thread to screw portion in thread rolling; Heat treatment is generally carried out in the refinery stove; Improving performance of products, surface treatment is promptly carried out some zinc coatings, is coated with the processing of nickel etc. the surface according to user demand, and is same in thread rolling, heat treatment, surface-treated concrete operations and the prior art.
Said annular knurl mould inside is a cavity; Cavity wall is provided with the tooth shaping mould that contracts; The cross sectional shape of tooth shaping mould of contracting equals automobile is promptly processed the knurled portion of the boss bolt finished product that the back forms with boss bolt cross sectional shape; The contract knurled portion matched in clearance of the boss bolt finished product that tooth shaping mould and processing back form, the width of the tooth shaping mould that contracts equal automobile is promptly processed the boss bolt finished product of back formation with the boss bolt knurled portion the width of knurled portion.
Said annular knurl mould is processed by the high rigidity carbide alloy, is preferably wolfram steel.
Compared with prior art; The present invention has following remarkable advantage and beneficial effect: automobile of the present invention with the cold forging process of boss bolt processing technology except the general profile that forms boss bolt; Also adopt in-molded method to form the tooth that contracts at the knurled portion cold forging; Guaranteed the appearance and size requirement of tooth portion, tooth portion appearance and size product percent of pass has improved 3-5 ‰ than prior art; Adopt the automatic cold header time processing, shortened its manufacturing procedure, reduced intermediate link, effectively improved production efficiency, reduced processing cost; The tooth shaping mould that contracts adopts the high rigidity carbide alloy, can reach its service life 1,000,000 times, and this has also reduced processing cost indirectly.
Description of drawings
Shown in Figure 1 is that automobile is the structural representation of boss bolt finished product with boss bolt;
Shown in Figure 2 is the structural representation of prior art automobile with the boss bolt blank of cold-heading formation in the processing technology of boss bolt;
Shown in Figure 3 is the structural representation of automobile of the present invention with the boss bolt blank of cold-heading formation in the processing technology of boss bolt;
Shown in Figure 4 is the cutaway view of automobile of the present invention with annular knurl mould in the processing technology of boss bolt;
Shown in Figure 5 is the left view of automobile of the present invention with annular knurl mould in the processing technology of boss bolt.
Wherein: 1, bolt head; 2, screw portion; 3, knurled portion; 4, annular knurl mould; 5, cavity; 6, the tooth shaping mould that contracts.
The specific embodiment
Below in conjunction with embodiment the present invention is made further specific descriptions, but be not limited to this.
The automobile that the present invention relates to comprises bolt head 1, screw portion 2 with boss bolt and is positioned at the knurled portion 3 in the middle of both, and knurled portion 3 is provided with the tooth that contracts, and screw portion 2 is provided with screw thread, and is as shown in Figure 1.
In the prior art: automobile with the boss bolt manufacturing procedure is: cold-heading → gear rolling → thread rolling → heat treatment → surface treatment; The boss bolt blank that forms after the cold-heading is as shown in Figure 2, promptly compares with the boss bolt finished product: do not contract tooth, screw portion 2 of knurled portion 3 do not have screw thread.
Among the present invention: automobile with the boss bolt manufacturing procedure is: cold-heading → thread rolling → heat treatment → surface treatment, and the boss bolt blank that forms after the cold-heading is as shown in Figure 3, and promptly compare with the boss bolt finished product: screw portion 2 does not have screw thread.
Cold-heading is carried out on the multistation automatic cold former, and multistation automatic cold former such as model are the automatic cold former of JBF19B, and efficient is high, precision is high, and general rotating speed is 180 rev/mins～210 rev/mins.Annular knurl mould 4 is installed on the multistation automatic cold former.Said annular knurl mould 4 inside are a cavity 5; Cavity 5 walls are provided with the tooth shaping mould 6 that contracts; The cross sectional shape of tooth shaping mould 6 of contracting equals the cross sectional shape of automobile with boss bolt knurled portion 3; Contract tooth shaping mould 6 and automobile with boss bolt knurled portion 3 matched in clearance, and the width of the tooth shaping mould 6 that contracts equals the width of automobile with boss bolt knurled portion 3.Said annular knurl mould 4 is processed by the high rigidity carbide alloy, adopts wolfram steel generally speaking.
The above embodiment of the present invention is can not be used to limit the present invention to explanation of the present invention, and implication suitable with claims of the present invention and any change in the scope all should be thought to be included in the scope of claims.
Claims (4)
1. an automobile is used the boss bolt processing technology; It is characterized in that carrying out in order following operation: cold-heading, thread rolling, heat treatment, surface treatment; Wherein cold-heading is meant annular knurl mould (4) is installed on the multistation automatic cold former, and forging and pressing form the boss bolt blank that knurled portion has the tooth that contracts.
2. automobile according to claim 1 is used the boss bolt processing technology; It is characterized in that: said annular knurl mould (4) inside is a cavity (5); Cavity (5) wall is provided with the tooth shaping mould (6) that contracts; The cross sectional shape of tooth shaping mould (6) of contracting equals the cross sectional shape of automobile with boss bolt knurled portion (3), and contract tooth shaping mould (6) and automobile are with boss bolt knurled portion (3) matched in clearance, and the width of the tooth shaping mould (6) that contracts equals the width of automobile with boss bolt knurled portion (3).
3. automobile according to claim 1 is used the boss bolt processing technology, it is characterized in that: said annular knurl mould (4) is processed by the high rigidity carbide alloy.
4. automobile according to claim 3 is used the boss bolt processing technology, it is characterized in that: said annular knurl mould (4) is processed by wolfram steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101132507A CN102615239A (en) | 2012-04-17 | 2012-04-17 | Processing process of wheel hub screw bolt for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101132507A CN102615239A (en) | 2012-04-17 | 2012-04-17 | Processing process of wheel hub screw bolt for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102615239A true CN102615239A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101132507A Pending CN102615239A (en) | 2012-04-17 | 2012-04-17 | Processing process of wheel hub screw bolt for automobile |
Country Status (1)
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| CN (1) | CN102615239A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001851A (en) * | 2014-05-21 | 2014-08-27 | 西安交通大学 | Radial forging method for forming short lead screw of inverted planetary roller screw pair |
| CN104117624A (en) * | 2014-05-07 | 2014-10-29 | 深圳航空标准件有限公司 | Cold heading manufacturing method for connection bolt of ignition switch and die |
| CN105252228A (en) * | 2015-11-27 | 2016-01-20 | 宁波敏达机电有限公司 | Bolt processing process capable of sensing cold heading feeding |
| CN108311855A (en) * | 2018-03-08 | 2018-07-24 | 深圳市佰瑞兴实业有限公司 | A kind of manufacturing method of colored tooth riveting screw |
| CN111014563A (en) * | 2019-12-27 | 2020-04-17 | 上海鸿基金属制品有限公司 | Lower knurling process of extrusion molding screw product head and main die structure |
| CN111408901A (en) * | 2020-03-26 | 2020-07-14 | 鹏驰五金制品（昆山）有限公司 | Trimming-free production process for automobile hub bolt |
| CN111941015A (en) * | 2020-08-24 | 2020-11-17 | 温州鹏升汽车部件有限公司 | Trimming-free production process for automobile hub bolt |
Citations (7)
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| FR2321351A1 (en) * | 1975-07-30 | 1977-03-18 | Quichaud Daniel | Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions |
| CN2558481Y (en) * | 2002-06-26 | 2003-07-02 | 王占国 | Multi-station automatic bolt cold-heading machine |
| CN201064813Y (en) * | 2007-06-15 | 2008-05-28 | 上海上标汽车紧固件有限公司 | Special-purpose riveting pressing bolt forming die |
| RU2350424C1 (en) * | 2007-10-16 | 2009-03-27 | Открытое акционерное общество "Белебеевский завод "Автонормаль" | Production method of headed bolt allowing internal polyhedron and flange, on cold-upsetting automation |
| CN101537472A (en) * | 2009-04-10 | 2009-09-23 | 日泰（上海）汽车标准件有限公司 | Bolt processing technic featuring one-step molding |
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
| CN201855909U (en) * | 2010-06-25 | 2011-06-08 | 富奥汽车零部件股份有限公司 | Female die for molding head part of external plum blossom flange type bolt |
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2012
- 2012-04-17 CN CN2012101132507A patent/CN102615239A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2321351A1 (en) * | 1975-07-30 | 1977-03-18 | Quichaud Daniel | Precision forged bolts of steel or titanium alloys - where accurately turned blanks are hot forged to exact dimensions |
| CN2558481Y (en) * | 2002-06-26 | 2003-07-02 | 王占国 | Multi-station automatic bolt cold-heading machine |
| CN201064813Y (en) * | 2007-06-15 | 2008-05-28 | 上海上标汽车紧固件有限公司 | Special-purpose riveting pressing bolt forming die |
| RU2350424C1 (en) * | 2007-10-16 | 2009-03-27 | Открытое акционерное общество "Белебеевский завод "Автонормаль" | Production method of headed bolt allowing internal polyhedron and flange, on cold-upsetting automation |
| CN101537472A (en) * | 2009-04-10 | 2009-09-23 | 日泰（上海）汽车标准件有限公司 | Bolt processing technic featuring one-step molding |
| CN101890618A (en) * | 2010-06-17 | 2010-11-24 | 鹏驰五金制品有限公司 | Processing method of high-strength bolts |
| CN201855909U (en) * | 2010-06-25 | 2011-06-08 | 富奥汽车零部件股份有限公司 | Female die for molding head part of external plum blossom flange type bolt |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117624A (en) * | 2014-05-07 | 2014-10-29 | 深圳航空标准件有限公司 | Cold heading manufacturing method for connection bolt of ignition switch and die |
| CN104117624B (en) * | 2014-05-07 | 2017-04-19 | 卓越紧固系统（上海）有限公司 | Cold heading manufacturing method for connection bolt of ignition switch and die |
| CN104001851A (en) * | 2014-05-21 | 2014-08-27 | 西安交通大学 | Radial forging method for forming short lead screw of inverted planetary roller screw pair |
| CN104001851B (en) * | 2014-05-21 | 2015-11-25 | 西安交通大学 | The method of the short leading screw of a kind of radial forging shaping inverse type planetary roller screw pair |
| CN105252228A (en) * | 2015-11-27 | 2016-01-20 | 宁波敏达机电有限公司 | Bolt processing process capable of sensing cold heading feeding |
| CN108311855A (en) * | 2018-03-08 | 2018-07-24 | 深圳市佰瑞兴实业有限公司 | A kind of manufacturing method of colored tooth riveting screw |
| CN111014563A (en) * | 2019-12-27 | 2020-04-17 | 上海鸿基金属制品有限公司 | Lower knurling process of extrusion molding screw product head and main die structure |
| CN111408901A (en) * | 2020-03-26 | 2020-07-14 | 鹏驰五金制品（昆山）有限公司 | Trimming-free production process for automobile hub bolt |
| CN111941015A (en) * | 2020-08-24 | 2020-11-17 | 温州鹏升汽车部件有限公司 | Trimming-free production process for automobile hub bolt |
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Application publication date: 20120801 |