CN103350177A - Bearing twice-broaching process - Google Patents
Bearing twice-broaching process Download PDFInfo
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- CN103350177A CN103350177A CN2013102839524A CN201310283952A CN103350177A CN 103350177 A CN103350177 A CN 103350177A CN 2013102839524 A CN2013102839524 A CN 2013102839524A CN 201310283952 A CN201310283952 A CN 201310283952A CN 103350177 A CN103350177 A CN 103350177A
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- reaming
- bearing
- twice
- broaching
- forging temperature
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Abstract
The invention discloses a bearing twice-broaching process which sequentially comprises the following steps: medium frequency heating, discharging, upsetting, forming, bottom cutting, coarse broaching, fine broaching and restricking. The initial forging temperature during forging is 1000-1100 DEG C, and the final forging temperature is 800-850 DEG C. According to the bearing twice-broaching process, the geometric dimensional precision of a forge piece is further improved, the difference in wall thickness is removed, the allowance and the tolerance of the forge piece are reduced, and the material utilization ratio is improved. After the twice-broaching, crystalline grain of the forge piece is compact, the fiber flow direction is better, the anti-fatigue service life of the bearing is prolonged, the machining range of the forge piece is expanded, damage of the large-size product to equipment is reduced, the service life of the equipment is prolonged, the service life of a mold is greatly prolonged, and the failure rate of the equipment is greatly reduced.
Description
Technical field
The present invention relates to the mold machining technology field, be specifically related to twice chambering process of a kind of bearing.
Background technology
Existing bearing chambering process mainly may further comprise the steps successively: heating in medium frequency, blanking, jumping-up, moulding, cut the end, reaming, whole footpath.The deficiency of its existence is: the geometric accuracy of forging remains further to be improved, because Wall-Thickness Difference, the allowance of forging and the impact of tolerance, so that stock utilization is not high; Forging crystal grain is fine and close not, and fiber flow direction is not good, so the anti-fatigue life of bearing is limited; The range of work of product is little; The large scale product is high to the injury of equipment, and the service life of equipment and mold is low, and the process equipment fault rate is higher.
Summary of the invention
The object of the present invention is to provide twice chambering process of a kind of bearing, do not need significantly to increase equipment cost, can guarantee product quality, control fault rate, reduce the more mold exchange frequency, under the prerequisite of enhancing productivity, realize the expansion of the product range of work and overcome the deficiency that prior art exists.
To achieve these goals, the technical scheme of the present invention's proposition is:
Twice chambering process of a kind of bearing, may further comprise the steps successively: heating in medium frequency, blanking, jumping-up, moulding, cut the end, thick reaming, smart reaming, whole footpath, initial forging temperature during blanking is 1000～1100 ℃, forging temperature during thick reaming is 900～950 ℃, forging temperature during the essence reaming is 850～900 ℃, and the final forging temperature during whole footpath is 800～850 ℃.
As twice chambering process of the further improved bearing of the present invention, the bore rate of change of described thick reaming is 5～10 times of bore rate of change of smart reaming.
Twice chambering process of bearing provided by the present invention further improves the geometric accuracy of forging, eliminates Wall-Thickness Difference, reduces allowance and the tolerance of forging, improves stock utilization; Forging crystal grain after twice reaming is fine and close, and fiber flow direction is better, has improved the anti-fatigue life of bearing; Enlarged the range of work of product; Reduce the large scale product to the injury of equipment, in the service life of extension device, increase substantially die life; Significantly reduce the fault rate of equipment.
The specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment the present invention is done to describe in further detail, this embodiment only is used for explaining the present invention, does not consist of the restriction to protection domain of the present invention.
Embodiment one
Heating in medium frequency, blanking, jumping-up, moulding, cut the end, thick reaming, smart reaming, whole footpath, initial forging temperature during blanking is 1000～1100 ℃, forging temperature during thick reaming is 900～950 ℃, and the forging temperature during smart reaming is 850～900 ℃, and the final forging temperature during whole footpath is 800～850 ℃.The bearing middleware that with internal diameter is 35 millimeters expands its internal diameter to 40 millimeters by thick reaming, again by smart reaming with its internal diameter expansion to 41 millimeters.
Embodiment two
Heating in medium frequency, blanking, jumping-up, moulding, cut the end, thick reaming, smart reaming, whole footpath, initial forging temperature during blanking is 1000～1100 ℃, forging temperature during thick reaming is 900～950 ℃, and the forging temperature during smart reaming is 850～900 ℃, and the final forging temperature during whole footpath is 800～850 ℃.The bearing middleware that with internal diameter is 35 millimeters expands its internal diameter to 45 millimeters by thick reaming, again by smart reaming with its internal diameter expansion to 46 millimeters.
Embodiment three
Heating in medium frequency, blanking, jumping-up, moulding, cut the end, thick reaming, smart reaming, whole footpath, initial forging temperature during blanking is 1000～1100 ℃, forging temperature during thick reaming is 900～950 ℃, and the forging temperature during smart reaming is 850～900 ℃, and the final forging temperature during whole footpath is 800～850 ℃.The bearing middleware that with internal diameter is 35 millimeters expands its internal diameter to 42 millimeters by thick reaming, again by smart reaming with its internal diameter expansion to 43 millimeters.
Adopt the bearing geometric accuracy of embodiment one to three processing higher, and eliminated Wall-Thickness Difference, reduced allowance and the tolerance of forging, improved stock utilization; Forging crystal grain after twice reaming is fine and close, and fiber flow direction is better, has improved the anti-fatigue life of bearing; Enlarged the range of work of product, the bore rate of change that a reaming is difficult to realize can be realized by twice reaming; And twice chambering process reduces the large scale product to the injury of equipment, increases substantially die life in service life of extension device, reduced the fault rate of equipment.
Claims (2)
1. twice chambering process of a bearing, it is characterized in that: may further comprise the steps successively: heating in medium frequency, blanking, jumping-up, moulding, cut the end, thick reaming, smart reaming, whole footpath, initial forging temperature during blanking is 1000～1100 ℃, forging temperature during thick reaming is 900～950 ℃, forging temperature during the essence reaming is 850～900 ℃, and the final forging temperature during whole footpath is 800～850 ℃.
2. twice chambering process of bearing according to claim 1 is characterized in that: the bore rate of change of described thick reaming is 5～10 times of bore rate of change of smart reaming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102839524A CN103350177A (en) | 2013-07-08 | 2013-07-08 | Bearing twice-broaching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102839524A CN103350177A (en) | 2013-07-08 | 2013-07-08 | Bearing twice-broaching process |
Publications (1)
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| CN103350177A true CN103350177A (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013102839524A Pending CN103350177A (en) | 2013-07-08 | 2013-07-08 | Bearing twice-broaching process |
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| CN (1) | CN103350177A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639672A (en) * | 2013-12-27 | 2014-03-19 | 希西维轴承（盱眙）有限公司 | Forging technology of saddle groove bearing |
| CN104690556A (en) * | 2014-12-19 | 2015-06-10 | 东莞市辉科自动化科技有限公司 | Full-automatic bearing production line adopting forging manipulators |
| CN104759568A (en) * | 2015-04-20 | 2015-07-08 | 湖州以创精工机械有限公司 | Method for forging blank by means of 700-ton hydraulic machine |
| CN106064221A (en) * | 2016-06-20 | 2016-11-02 | 安徽省瑞杰锻造有限责任公司 | A kind of Forging Technology of GCr15 roller shell |
| CN110788576A (en) * | 2019-11-27 | 2020-02-14 | 芜湖市畅玖轴承有限公司 | Forging process of bearing ring |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10193016A (en) * | 1996-12-27 | 1998-07-28 | Ntn Corp | Manufacture of bearing ring |
| JP2008196662A (en) * | 2007-02-15 | 2008-08-28 | Ntn Corp | Outer ring manufacturing method |
| CN101722261A (en) * | 2008-10-31 | 2010-06-09 | 鞍钢重型机械有限责任公司 | Free forging method of ultra-large annular component |
| CN102022433A (en) * | 2009-09-22 | 2011-04-20 | 上海腾辉锻造有限公司 | Method for manufacturing chromium bronze thrust bearing pads |
| CN102489656A (en) * | 2011-12-02 | 2012-06-13 | 合肥市远大轴承锻造有限公司 | Bearing forging production process by blanking long bar at 900 DEG C and continuously heating to 1050 DEG C at intermediate frequency |
| CN102528406A (en) * | 2012-03-13 | 2012-07-04 | 江国辉 | Method for processing automobile synchronizer gear ring blank |
| CN102861857A (en) * | 2012-09-14 | 2013-01-09 | 合肥市远大轴承锻造有限公司 | Rolling bearing forging process |
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2013
- 2013-07-08 CN CN2013102839524A patent/CN103350177A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10193016A (en) * | 1996-12-27 | 1998-07-28 | Ntn Corp | Manufacture of bearing ring |
| JP2008196662A (en) * | 2007-02-15 | 2008-08-28 | Ntn Corp | Outer ring manufacturing method |
| CN101722261A (en) * | 2008-10-31 | 2010-06-09 | 鞍钢重型机械有限责任公司 | Free forging method of ultra-large annular component |
| CN102022433A (en) * | 2009-09-22 | 2011-04-20 | 上海腾辉锻造有限公司 | Method for manufacturing chromium bronze thrust bearing pads |
| CN102489656A (en) * | 2011-12-02 | 2012-06-13 | 合肥市远大轴承锻造有限公司 | Bearing forging production process by blanking long bar at 900 DEG C and continuously heating to 1050 DEG C at intermediate frequency |
| CN102528406A (en) * | 2012-03-13 | 2012-07-04 | 江国辉 | Method for processing automobile synchronizer gear ring blank |
| CN102861857A (en) * | 2012-09-14 | 2013-01-09 | 合肥市远大轴承锻造有限公司 | Rolling bearing forging process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639672A (en) * | 2013-12-27 | 2014-03-19 | 希西维轴承（盱眙）有限公司 | Forging technology of saddle groove bearing |
| CN104690556A (en) * | 2014-12-19 | 2015-06-10 | 东莞市辉科自动化科技有限公司 | Full-automatic bearing production line adopting forging manipulators |
| CN104759568A (en) * | 2015-04-20 | 2015-07-08 | 湖州以创精工机械有限公司 | Method for forging blank by means of 700-ton hydraulic machine |
| CN106064221A (en) * | 2016-06-20 | 2016-11-02 | 安徽省瑞杰锻造有限责任公司 | A kind of Forging Technology of GCr15 roller shell |
| CN110788576A (en) * | 2019-11-27 | 2020-02-14 | 芜湖市畅玖轴承有限公司 | Forging process of bearing ring |
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Application publication date: 20131016 |