CN1752224A - Method for heat treatment coning of bearing - Google Patents
Method for heat treatment coning of bearing Download PDFInfo
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- CN1752224A CN1752224A CN 200510046437 CN200510046437A CN1752224A CN 1752224 A CN1752224 A CN 1752224A CN 200510046437 CN200510046437 CN 200510046437 CN 200510046437 A CN200510046437 A CN 200510046437A CN 1752224 A CN1752224 A CN 1752224A
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- bearing
- coning
- bearing ring
- heat treatment
- shaping screw
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Abstract
A heat treating method of bearing for shaping it includes such steps as quenching the bearing, measuring the ellipticity of its internal circle, putting a shaping screw on the short axis of the bearing ring, measuring the length of its short axis, regulating the shaping screw until the length of short axis is increased by one time, tempering, and removing said shaping screw.
Description
Technical field
The invention belongs to heat treating trimming and Grinding Technology field.
Background technology
Bearing ring is behind heat-treatment quenching, owing to be subjected to the influence of several factors, its shape will change, and wherein to produce oval sex change be inevitably for endoporus, outside surface, and people adopt control outside surface way to solve the sex change problem usually at present.Because the complicacy of sex change, endoporus is oval inconsistent with the outside surface ellipse, makes endoporus ovality deflection be greater than outside surface.Owing to be subjected to the influence of factors such as lathe precision and forging geometrical shape, the endoporus and the outside surface of Vehicle Processing rear bearing lasso will produce ellipse, and the major axis of endoporus and outside surface is inconsistent, promptly not in a plane, therefore behind heat-treatment quenching, the endoporus of bearing ring and outside surface transverse also are inconsistent.Bearing industry all adopts the way of the back Control Shaft bearing ring outside surface ellipse that quenches to solve the problem of distortion at present, so just makes bearing ring endoporus ovality greater than outside surface.Therefore at present the endoporus scrap rate is higher, the thin bearing ring of wall thickness between 10-30mm particularly, as NN3020 series axis bearing outer-ring scrap rate up to about 10%.And, make working (machining) efficiency reduce about 1/3rd because the internal control ellipse has a strong impact on working (machining) efficiency.
Concerning bearing grinding, if outside surface adopts M1083 grinding machine lasso, endoporus adopts M250 or M2120, and then the efficient of outside surface grinding lasso is 5 times of inner hole grinding lasso; If the outside surface ellipse is amm, then need the stock removal of 5a/4mm just can give up ellipse,, then need the stock removal of 2amm just can give up ellipse if the endoporus ellipse is amm, and the process amount of feed of endoporus improvement ellipse is necessary less, and the influence mill is processed endoporus efficient.
Summary of the invention
Purpose of the present invention just provides and a kind ofly is converted to the control endoporus by the control outside surface, makes the ovality of endoporus be less than the ovality of external diameter usually, thereby reduces the method for heat treatment coning of bearing of bearing mill tooling cost.
Technical solution of the present invention is, a kind of method for heat treatment coning of bearing, and processing step is:
A. quench the back with internal diameter measuring instrument 2 measuring shaft bearing rings 1 endoporus ovality, surpass the ovality standard, ovality numerical value is marked on the bearing ring 1;
B. with shaping screw 4, withstand on the middle part of bearing ring 1 ellipse short shaft;
C. use external measuring instrument 6 measuring shaft bearing rings 1 outside surface minor axis place; Adjust shaping screw 4, measuring shaft bearing ring 1 outside surface minor axis place increases to original 2 times up to this null ellipse degree again;
D. put bearing ring after the shaping 1 and shaping screw 4 into tempering stove together;
E. after the tempering, pull down shaping screw 4.
Internal diameter measuring instrument is D924.
Internal diameter measuring instrument is D925.
Shaping screw 4 and iron staff 5 are withstood on the middle part of bearing ring 1 ellipse short shaft.
External measuring instrument 6 is G905 and D901.
The bolt of shaping screw 4 is M25, and length is 40-50mm; Nut is M25, and length is 30-40mm.
Iron staff 5 is M30, and length is 20-50mm.
Beneficial effect and benefit that the present invention reached be, reduces the inner hole grinding amount, increases substantially grinding efficiency, and about 1/2nd the amount that increases endoporus mill amount is ground to outside surface, reduces the outside surface grinding efficiency by a small margin, and heat treating trimming is measured endoporus accuracy height.Because bearing ring endoporus ovality reduces, and bearing ring endoporus scrap rate is reduced greatly, inner hole grinding efficient has improved 1/3rd, though transfer to external diameter oval by endoporus, the outside surface grinding efficiency is higher than endoporus more than 5 times.Therefore total efficiency is with better results, and expectation can reduce mill tooling cost about 10%.
Description of drawings
Fig. 1 is a hole pattern in the measurement of the present invention.
Fig. 2 is shaping figure of the present invention.
Wherein, 1. bearing ring, 2. internal diameter measuring instrument, 3. dial gauge, 4. shaping screw, 5. iron staff, 6. external measuring instrument.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
With the NN3020K/P4 bearing outer ring is example explanation shaping process.
A. with internal diameter measuring instrument D924 measuring shaft bearing ring 1 endoporus ovality, its ovality is 0.45mm after quenching;
B. just shaping screw 4 and iron staff 5 withstand on the middle part of bearing ring 1 ellipse short shaft;
C. use external measuring instrument G905 and D901 measuring shaft bearing ring 1 outside surface minor axis place, with 3 pairs zero of dial gauges; Adjust shaping screw 4, measuring shaft bearing ring 1 outside surface minor axis place makes its minor axis dimension increase 0.90mm again;
D. put bearing ring after the shaping 1 and shaping screw 4 into tempering stove together;
E. after the tempering, pull down shaping screw 4 iron staffs 5.
The bolt of shaping screw 4 is M25, and length is 40mm; Nut is M25, and length is 30mm.
Iron staff 5 is M30, and length is 30mm.
Claims (8)
1. method for heat treatment coning of bearing is characterized in that processing step is:
A. quench the back with internal diameter measuring instrument (2) measuring shaft bearing ring (1) endoporus ovality, surpass the ovality standard, ovality numerical value is marked on the bearing ring (1);
B. with shaping screw (4), withstand on the middle part of bearing ring (1) ellipse short shaft;
C. use external measuring instrument (6) measuring shaft bearing ring (1) outside surface minor axis place; Adjust shaping screw (4), measuring shaft bearing ring (1) outside surface minor axis place increases to original 2 times up to this null ellipse degree again;
D. put bearing ring after the shaping (1) and shaping screw (4) into tempering stove together;
E. after the tempering, pull down shaping screw (4).
2. a kind of method for heat treatment coning of bearing according to claim 1 is characterized in that internal diameter measuring instrument is D924.
3. a kind of method for heat treatment coning of bearing according to claim 1 is characterized in that internal diameter measuring instrument is D925.
4. a kind of method for heat treatment coning of bearing according to claim 1 is characterized in that, bearing ring (1) is asymmetrical, and shaping screw (4) is withstood on the big position of bearing ring (1) wall thickness.
5. according to claim 1 or 4 described a kind of method for heat treatment coning of bearing, it is characterized in that, shaping screw (4) and iron staff (5) are withstood on the middle part of bearing ring (1) ellipse short shaft.
6. according to claim 1 or 4 described a kind of method for heat treatment coning of bearing, it is characterized in that external measuring instrument (6) is G905 and D901.
7. a kind of according to claim 1 or 5 method for heat treatment coning of bearing is characterized in that the bolt of shaping screw (4) is M25, and length is 40-50mm; Nut is M25, and length is 30-40mm.
8. a kind of method for heat treatment coning of bearing according to claim 5 is characterized in that, iron staff (5) is M30, and length is 20-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046437 CN1752224A (en) | 2005-05-13 | 2005-05-13 | Method for heat treatment coning of bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046437 CN1752224A (en) | 2005-05-13 | 2005-05-13 | Method for heat treatment coning of bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1752224A true CN1752224A (en) | 2006-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510046437 Pending CN1752224A (en) | 2005-05-13 | 2005-05-13 | Method for heat treatment coning of bearing |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436607C (en) * | 2006-04-10 | 2008-11-26 | 张光荣 | Quenching process and its quenching device for bearing internal and external rings |
| CN101781704A (en) * | 2010-03-19 | 2010-07-21 | 上海旗春热处理有限公司 | Process for shaping out-of-round internal gear parts |
| CN102828005A (en) * | 2011-06-14 | 2012-12-19 | 瓦房店正达冶金轧机轴承有限公司 | Isothermal quenching self-shaping process for large-scale sleeve in salt bath |
| CN103286163A (en) * | 2013-03-29 | 2013-09-11 | 李旋 | Lead screw shaping device and thermal correction method for elliptic deformation of ring product |
| CN106854686A (en) * | 2015-12-08 | 2017-06-16 | 上海新力动力设备研究所 | A kind of shaping methods of ultrahigh-strength steel thin-wall housing quenching distortion |
| CN109604389A (en) * | 2018-12-06 | 2019-04-12 | 中国航发贵州黎阳航空动力有限公司 | A kind of big thickness rectifier brazing deformation bearing calibration and device |
| CN110666001A (en) * | 2019-11-06 | 2020-01-10 | 山东库珀轴承技术服务有限公司 | Shaping top for heat treatment bearing ring |
| CN113477820A (en) * | 2021-07-29 | 2021-10-08 | 中国航发贵州黎阳航空动力有限公司 | Annular part thermal expansion correction tool and correction method |
| CN115261601A (en) * | 2022-06-13 | 2022-11-01 | 洛阳轴承研究所有限公司 | Deformation control method for outer ring of conical bearing |
-
2005
- 2005-05-13 CN CN 200510046437 patent/CN1752224A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436607C (en) * | 2006-04-10 | 2008-11-26 | 张光荣 | Quenching process and its quenching device for bearing internal and external rings |
| CN101781704A (en) * | 2010-03-19 | 2010-07-21 | 上海旗春热处理有限公司 | Process for shaping out-of-round internal gear parts |
| CN102828005A (en) * | 2011-06-14 | 2012-12-19 | 瓦房店正达冶金轧机轴承有限公司 | Isothermal quenching self-shaping process for large-scale sleeve in salt bath |
| CN103286163A (en) * | 2013-03-29 | 2013-09-11 | 李旋 | Lead screw shaping device and thermal correction method for elliptic deformation of ring product |
| CN106854686A (en) * | 2015-12-08 | 2017-06-16 | 上海新力动力设备研究所 | A kind of shaping methods of ultrahigh-strength steel thin-wall housing quenching distortion |
| CN106854686B (en) * | 2015-12-08 | 2019-05-07 | 上海新力动力设备研究所 | A kind of shaping methods of ultrahigh-strength steel thin-wall shell quenching distortion |
| CN109604389A (en) * | 2018-12-06 | 2019-04-12 | 中国航发贵州黎阳航空动力有限公司 | A kind of big thickness rectifier brazing deformation bearing calibration and device |
| CN110666001A (en) * | 2019-11-06 | 2020-01-10 | 山东库珀轴承技术服务有限公司 | Shaping top for heat treatment bearing ring |
| CN113477820A (en) * | 2021-07-29 | 2021-10-08 | 中国航发贵州黎阳航空动力有限公司 | Annular part thermal expansion correction tool and correction method |
| CN115261601A (en) * | 2022-06-13 | 2022-11-01 | 洛阳轴承研究所有限公司 | Deformation control method for outer ring of conical bearing |
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