CN103143886A - Novel processing method of ball bearing - Google Patents

Novel processing method of ball bearing Download PDF

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Publication number
CN103143886A
CN103143886A CN2013100535577A CN201310053557A CN103143886A CN 103143886 A CN103143886 A CN 103143886A CN 2013100535577 A CN2013100535577 A CN 2013100535577A CN 201310053557 A CN201310053557 A CN 201310053557A CN 103143886 A CN103143886 A CN 103143886A
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China
Prior art keywords
temperature
quenching
bearing
processing
deformation
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CN2013100535577A
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Chinese (zh)
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CN103143886B (en
Inventor
刘美冬
刘荣格
夏克浪
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ZHEJIANG WEISHANG MACHINERY CO Ltd
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ZHEJIANG WEISHANG MACHINERY CO Ltd
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Priority to CN201310053557.7A priority Critical patent/CN103143886B/en
Publication of CN103143886A publication Critical patent/CN103143886A/en
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Publication of CN103143886B publication Critical patent/CN103143886B/en
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Abstract

The invention relates to a novel processing method of a ball bearing. The method comprises the following steps: step a, integrally lathing two bearing rings to cause the outline to be changed into a symmetrical structure; step b, carrying out heat treatment: a processing manner of salt quenching of a roller furnace is adopted, the products are uniformly placed in a tray during the processing process, a tray of materials are fed at a speed of 360 to 540 s in feeding, the heating time is 1 to 1.5 hours at the temperature of 830 to 850 DEG C, and the temperature is kept for 0.5 hour at the temperature of 850 DEG C, and then equipment with a lifting quenching mechanism is used to carry out the salt quenching, the quenching temperature is 170 DEG C, the quenching time is 5 to 9 minutes, the quenching medium is a fused nitrite, and finally, the tempering time is 1.5 to 3.5 hours at the temperature of 170 DEG C; and step c, performing the hardened machining after the heat treatment, and finally cutting into two independent bearing rings. The novel processing method can improve problems of the roundness deformation, cylindricity deformation, planeness deformation and other side deformation effectively.

Description

A kind of novel processing method of ball bearing
Technical field:
The present invention relates to machinery manufacturing technology field, relate in particular a kind of novel processing method of ball bearing, be applied to the angular contact ball bearing in robot.
Background technology:
Angular contact ball bearing is easily to produce a class bearing product of size distortion in heat treatment process, for example roundness deformation, cylindricity distortion and flatness distortion equidimension problem on deformation.The size distortion that is caused by heat treatment is more scabrous problem in heat treated process control always, and deformation rule is also unstable, the change in size that is caused by heat treatment makes product size surplus and grinding all bring larger impact, and therefore, it is particularly important that the research of heat treatment deformation seems.
Summary of the invention:
The objective of the invention is for the deficiencies in the prior art part, a kind of novel processing method of ball bearing is provided, can effectively improve roundness deformation, cylindricity distortion and flatness distortion equidimension problem on deformation, and come comparative analysis the method to the effect of improving of size distortion by data.
Technology solution of the present invention is as follows:
A kind of novel processing method of ball bearing, it comprises the steps:
A, with two bearing ring Vehicle Processing all-in-one-pieces, make appearance profile become symmetrical structure;
b, heat treatment: the processing mode that adopts roller rod stove salt to quench, evenly be placed in product in charging tray in process, advance a biscuit with the speed of 360s ~ 540s during charging, be 1 ~ 1.5 hour heat time heating time, heating and temperature control is at 830 ℃ ~ 850 ℃, be incubated again, temperature retention time is 0.5 hour, holding temperature is 850 ℃, then use the equipment with the lift quenching mechanism to carry out the salt quenching, hardening heat is 170 ℃, cool time is 5 ~ 9 minutes, hardening media is the nitrite of molten condition, carry out at last the tempering of 1.5 ~ 3.5 hours, temperature is 170 ℃.
Carry out again hard car after c, heat treatment are completed, finally be divided into two independently bearing rings.
In technique scheme, described bearing ring comprises bearing inner ring and bearing outside collar.
Beneficial effect of the present invention is:
The method applied in the present invention is with two lasso Vehicle Processing all-in-one-pieces, make appearance profile become symmetrical structure, then use the equipment with the lift quenching mechanism to carry out machining again after salt quenching, tempering, be divided into again two independently bearing rings, the problems such as larger circularity, cylindricity and flatness that occur in the time of the single heat treatment of product can effectively being improved in this way.
Description of drawings:
The present invention is described further below in conjunction with accompanying drawing:
Fig. 1 is the structural representation that two inside races of the present invention connect;
Fig. 2 is the structural representation that two outer collar of the present invention connect;
Fig. 3 is circularity size distortion Data Comparison figure of the present invention;
Fig. 4 is cylindricity size distortion Data Comparison figure of the present invention;
Fig. 5 is flatness size distortion Data Comparison figure of the present invention.
The specific embodiment:
The following stated is only preferred embodiment of the present invention, is not that scope of the present invention is limited.
Embodiment, see attached Fig. 1 and 2, a kind of novel processing method of ball bearing, it comprises the steps: a, two bearing inner rings and two bearing outside collars is distinguished Vehicle Processing all-in-one-piece products, make appearance profile become symmetrical structure, Fig. 1 is two symmetrical structures that inside race connects into, and Fig. 2 is two symmetrical structures that outer collar connects into.
B, heat treatment: the processing mode that adopts roller rod stove salt to quench, evenly be placed in product in charging tray in process, advance a biscuit with the speed of 360s during charging, be 1 hour heat time heating time, heating-up temperature is 830 ℃ ~ 850 ℃, be incubated again, insulation is 0.5 hour under 850 ℃, then use the equipment with the lift quenching mechanism to carry out the salt quenching, cool time is 5 minutes, hardening heat is 170 ℃, and hardening media is the nitrite of molten condition, carries out at last the tempering of 170 ℃ of 1.5 hours.
Carry out again hard car after c, heat treatment are completed, finally be divided into two independently bearing inner ring and bearing outside collars.
Adopt said method effectively to improve the problem of size distortion.Take bearing outside collar as example, get five reference points of the equivalent position on product and analyze, can find out from the size distortion Data Comparison of its circularity, cylindricity and flatness three aspects:
As shown in Figure 3, when circularity is processed in the employing conventional method, probably between 0.20 to 0.40mm, overproof ratio accounts for 40% left and right to deformation range, after having adopted this technology, roundness deformation can be controlled at 0.15mm between 0.30mm, and is out of shape overproof ratio and reduces to 15% left and right.
As shown in Figure 4, when cylindricity is processed in the employing conventional method, probably between 0.17 to 0.33mm, overproof ratio accounts for 30% left and right to deformation range, after having adopted this new technology, the cylindricity distortion can be controlled at 0.8mm between 0.20mm, and is out of shape overproof ratio and reduces to 10% left and right.
As shown in Figure 5, when flatness is processed in the employing conventional method, probably between 0.15 to 0.40mm, overproof ratio accounts for 30% left and right to deformation range, after having adopted new technology, the cylindricity distortion can be controlled at 0.10mm between 0.20mm, and is out of shape overproof ratio and reduces to 10% left and right.

Claims (2)

1. the novel processing method of a ball bearing, it is characterized in that: it comprises the steps:
A, with two bearing ring Vehicle Processing all-in-one-pieces, make appearance profile become symmetrical structure;
b, heat treatment: the processing mode that adopts roller rod stove salt to quench, evenly be placed in product in charging tray in process, advance a biscuit with the speed of 360s ~ 540s during charging, be 1 ~ 1.5 hour heat time heating time, heating and temperature control is at 830 ℃ ~ 850 ℃, be incubated again, temperature retention time is 0.5 hour, holding temperature is 850 ℃, then use the equipment with the lift quenching mechanism to carry out the salt quenching, hardening heat is 170 ℃, cool time is 5 ~ 9 minutes, hardening media is the nitrite of molten condition, carry out at last the tempering of 1.5 ~ 3.5 hours, temperature is 170 ℃,
Carry out again hard car after c, heat treatment are completed, finally be divided into two independently bearing rings.
2. the novel processing method of a kind of ball bearing according to claim 1, it is characterized in that: described bearing ring comprises bearing inner ring and bearing outside collar.
CN201310053557.7A 2013-02-19 2013-02-19 A kind of novel processing method of ball bearing Active CN103143886B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310053557.7A CN103143886B (en) 2013-02-19 2013-02-19 A kind of novel processing method of ball bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310053557.7A CN103143886B (en) 2013-02-19 2013-02-19 A kind of novel processing method of ball bearing

Publications (2)

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CN103143886A true CN103143886A (en) 2013-06-12
CN103143886B CN103143886B (en) 2016-05-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105834699A (en) * 2016-06-03 2016-08-10 中航工业哈尔滨轴承有限公司 Machining method for sealing groove of outer ring of bearing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005337421A (en) * 2004-05-28 2005-12-08 Ntn Corp Angular ball bearing and its manufacturing method
CN101186965A (en) * 2007-11-30 2008-05-28 洛阳轴研科技股份有限公司 GCr15 steel bearing collar bainite isothermal quenching technique
CN102399968A (en) * 2011-10-29 2012-04-04 洛阳市洛凌轴承科技股份有限公司 Thermal treatment process of high-carbon chromium bearing ring
CN102518678A (en) * 2011-11-10 2012-06-27 中机洛阳轴承科技有限公司 Processing method for ball bearing with ultra-thin wall and uniform section
CN102605149A (en) * 2012-04-12 2012-07-25 奥新(厦门)轴承有限公司 Irregular bearing ring heat treatment process and quenching oil applicable to same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005337421A (en) * 2004-05-28 2005-12-08 Ntn Corp Angular ball bearing and its manufacturing method
CN101186965A (en) * 2007-11-30 2008-05-28 洛阳轴研科技股份有限公司 GCr15 steel bearing collar bainite isothermal quenching technique
CN102399968A (en) * 2011-10-29 2012-04-04 洛阳市洛凌轴承科技股份有限公司 Thermal treatment process of high-carbon chromium bearing ring
CN102518678A (en) * 2011-11-10 2012-06-27 中机洛阳轴承科技有限公司 Processing method for ball bearing with ultra-thin wall and uniform section
CN102605149A (en) * 2012-04-12 2012-07-25 奥新(厦门)轴承有限公司 Irregular bearing ring heat treatment process and quenching oil applicable to same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
吴光英: "《现代热处理炉》", 30 April 1991, 机械工业出版社 *
李新宇,林伟: "热处理辊棒炉生产线控制系统的改进", 《轴承》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105834699A (en) * 2016-06-03 2016-08-10 中航工业哈尔滨轴承有限公司 Machining method for sealing groove of outer ring of bearing

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