CN102909529A - Manufacturing process of bearing bolt - Google Patents
Manufacturing process of bearing bolt Download PDFInfo
- Publication number
- CN102909529A CN102909529A CN2012103790281A CN201210379028A CN102909529A CN 102909529 A CN102909529 A CN 102909529A CN 2012103790281 A CN2012103790281 A CN 2012103790281A CN 201210379028 A CN201210379028 A CN 201210379028A CN 102909529 A CN102909529 A CN 102909529A
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- China
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- manufacturing process
- excircles
- cold forging
- bearing bolt
- blank
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Abstract
A manufacturing process of a bearing bolt comprises the following steps of excircle drawing, annealing, blank cold forging, cropping and grooving. Excircles are drawn by a cold-drawing machine, tolerances of the excircles are controlled within 0-0.01 mm in the excircle drawing step. The temperature is heated to 750-780 DEG C and kept for 4-5 h for the purpose of removing stress and reducing hardness in the annealing step. A blank is subjected to cold forging, the tolerances of the three excircles are controlled to be 0-0.08 and the coaxiality of the three excircles is controlled to be 0-0.08 in the blank cold forging step. The manufacturing process has the benefits that the production efficiency is improved by adjusting a machining process, the yield per shift is increased greatly, the product quality is improved, all the excircles meet the requirements at present, and materials are saved greatly.
Description
Technical field
The present invention relates to a kind of manufacturing process, particularly a kind of manufacturing process of the bearing bolt that connects for the processing automobile joint belongs to metal cold forging technical field.
Background technology
Bearing bolt in the market is the cold forging blank before this, and then centering guarantees the axiality 0.08 of 3 cylindricals with Double Tops pins fine finishining car circle, but its production efficiency is low, does not guarantee near thimble cylindrical tolerance on one side, the scrappage height.
Summary of the invention
Goal of the invention: the purpose of this invention is to provide a kind of bearing bolt manufacturing process that can guarantee three outer circles requirements.
Technical scheme: a kind of bearing bolt manufacturing process, described manufacturing process may further comprise the steps:
A) draw cylindrical: draw cylindrical with cold-drawn machine first, its allowance control is in 0-0.01mm;
B) annealing: 750-780 ℃ of temperature retention times of heating-up temperature are 4-5 hour, during its purpose in order to remove the stress drop soft;
C) the cold forging hair is bad: the cold forging blank, and 3 cylindrical allowance controls are at 0-0.08, and axiality is at 0-0.08;
D) tack;
E) grooving.
Beneficial effect: the present invention enhances productivity by adjusting processing technology, and original class output is 400, and class's output has reached 1000 now; Improved product quality, cylindrical 100% meets the requirements now; Save material 30%.
Description of drawings
Temperature and time curve map in Fig. 1 annealing operation of the present invention.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Process route: draw cylindrical → annealing → cold forging blank → tack → grooving
A kind of bearing bolt manufacturing process, described manufacturing process may further comprise the steps:
A) draw cylindrical: draw cylindrical with cold-drawn machine first, its allowance control is in 0-0.01mm;
B) annealing: 750-780 ℃ of temperature retention times of heating-up temperature are 4-5 hour, during its purpose in order to remove the stress drop soft;
C) the cold forging hair is bad: the cold forging blank, and 3 cylindrical allowance controls are at 0-0.08, and axiality is at 0-0.08;
D) tack: adopt CK6136 numerical control tack;
E) grooving: adopt CK6136 numerical control grooving.
Facts have proved the spacer manufacturing process after improving:
1. three cylindrical tolerance qualification rates reach 100%, and ensuring coaxiality is in 0.08
2. economical with materials 30%
In sum: the bearing bolt manufacturing process after more improving is so that product quality improves, dependable performance, and production efficiency significantly improves, and cost obviously descends, and can satisfy client's demand.
Claims (1)
1. bearing bolt manufacturing process, it is characterized in that: described manufacturing process may further comprise the steps:
A) draw cylindrical: draw cylindrical with cold-drawn machine first, its allowance control is in 0-0.01mm;
B) annealing: 750-780 ℃ of temperature retention times of heating-up temperature are 4-5 hour;
C) cold forging blank: the cold forging blank, 3 cylindrical allowance controls are at 0-0.08, and axiality is at 0-0.08;
D) tack: the hydraulic press with 200T pushes, dimensional tolerance 0-0.1mm, axiality 0-0.2mm;
E) grooving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103790281A CN102909529A (en) | 2012-10-09 | 2012-10-09 | Manufacturing process of bearing bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103790281A CN102909529A (en) | 2012-10-09 | 2012-10-09 | Manufacturing process of bearing bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102909529A true CN102909529A (en) | 2013-02-06 |
Family
ID=47608236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103790281A Pending CN102909529A (en) | 2012-10-09 | 2012-10-09 | Manufacturing process of bearing bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102909529A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148884A (en) * | 2014-05-28 | 2014-11-19 | 无锡兴澄华新钢材有限公司 | Irregular bar machining process |
| CN105969952A (en) * | 2016-07-06 | 2016-09-28 | 常熟市常力紧固件有限公司 | Annealing process for assembling bolt for automobile frame |
| CN106239053A (en) * | 2016-08-26 | 2016-12-21 | 无锡兴澄特种材料有限公司 | The method that type is pumped into by special-shaped rod one |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH057973A (en) * | 1991-02-25 | 1993-01-19 | Sumitomo Metal Ind Ltd | Manufacture of cold-forged product |
| JPH1053813A (en) * | 1996-08-09 | 1998-02-24 | O & K:Kk | Production of non-tempered high tensile strength bolt |
| US20070187003A1 (en) * | 2004-03-02 | 2007-08-16 | Honda Motor Co., Ltd. | High-strength bolt superior in delayed fracture and resistance and relaxation resistance |
| CN102319990A (en) * | 2011-09-30 | 2012-01-18 | 山推工程机械股份有限公司 | Manufacturing process of low-carbon high-strength bolt for track |
-
2012
- 2012-10-09 CN CN2012103790281A patent/CN102909529A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH057973A (en) * | 1991-02-25 | 1993-01-19 | Sumitomo Metal Ind Ltd | Manufacture of cold-forged product |
| JPH1053813A (en) * | 1996-08-09 | 1998-02-24 | O & K:Kk | Production of non-tempered high tensile strength bolt |
| US20070187003A1 (en) * | 2004-03-02 | 2007-08-16 | Honda Motor Co., Ltd. | High-strength bolt superior in delayed fracture and resistance and relaxation resistance |
| CN102319990A (en) * | 2011-09-30 | 2012-01-18 | 山推工程机械股份有限公司 | Manufacturing process of low-carbon high-strength bolt for track |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148884A (en) * | 2014-05-28 | 2014-11-19 | 无锡兴澄华新钢材有限公司 | Irregular bar machining process |
| CN104148884B (en) * | 2014-05-28 | 2016-08-24 | 无锡兴澄特种材料有限公司 | Special-shaped rod processing technique |
| CN105969952A (en) * | 2016-07-06 | 2016-09-28 | 常熟市常力紧固件有限公司 | Annealing process for assembling bolt for automobile frame |
| CN106239053A (en) * | 2016-08-26 | 2016-12-21 | 无锡兴澄特种材料有限公司 | The method that type is pumped into by special-shaped rod one |
| CN106239053B (en) * | 2016-08-26 | 2018-02-23 | 无锡兴澄特种材料有限公司 | The method that special-shaped rod one is pumped into type |
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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 |
Application publication date: 20130206 |