Grinding process of precision mute bearing steel ball

A technology of silent bearing and grinding process, applied in the field of bearing steel ball manufacturing, can solve problems such as cost increase

Inactive Publication Date: 2016-07-27
WUXI CITY FEI YUN STEEL BALL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the needs of precision silent bearing steel balls, many manufacturers have adopted multiple grindings to improve accuracy, resulting in increased costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0005] It includes the following steps:

[0006] , Preliminary research: process the steel balls after surface strengthening with a grinder and cast iron plate, processing speed: 15~60rpm, pressure: 1~5Mpa, grinding medium: circulating fluid + W2.5 white corundum + suspension; first Take about 300g of W2.5 white corundum and the suspension mixed according to the ratio of 1:1, evenly apply the solution on the surface of the steel ball to be processed, start the machine for 2 laps of dry grinding, and then turn on the circulating fluid, the circulating fluid The ratio of water and water is 1:9. In the early stage of preliminary research, low-pressure and low-speed grinding is used to eliminate the intergranular difference in the hard grinding process, so that the groove and the steel ball coincide; in the middle stage of preliminary research, high-pressure and high-speed grinding is used to speed up the grinding amount and reduce production costs; in the later stage of prelimi...

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PUM

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Abstract

The invention discloses a grinding process of a precision mute bearing steel ball. According to the process, auxiliary materials used in a grinding procedure, proportion of the auxiliary materials and machining parameters in the process are controlled so that the precision of the steel ball is high and reliable, lapping and machining of the precision mute steel ball are not limited by a constant-temperature environment, the production efficiency is high, the cost is low, the quality and the precision of the product are good, and the mute effect is good. The grinding process comprises the following steps: preliminary grinding, preliminary grinding cleaning and lapping. Lapping media comprise a circulating liquid, mixed (W1 and W.0.5) diamond micro-powder and suspension liquid, the proportion of the circulating liquid is 13-17%, according to control of the process, powerful magnetic bars are placed in a grinding liquid box and adsorb scrap iron and impurities in the grinding liquid box, so that the steel ball can be polished, the purposes of good precision and good roughness are achieved, and cost waste caused by repeated grinding is avoided. According to detection of the national bearing quality supervision and testing center to the steel ball manufactured by the invention, the sphericity error of the steel ball is smaller than or equal to 0.06 micrometer, surface roughness is smaller than or equal to 0.007 micrometer, the vibration value of the single steel ball is stabilized in a range between 24 dB and 26 dB, and the vibration decibel of the steel ball is lower than that of a common steel ball by 6 dB.

Description

technical field [0001] The invention relates to the technical field of bearing steel ball manufacturing, in particular to a grinding process for precision silent bearing steel balls. Background technique [0002] Steel balls (rolling elements) play a big role in the quality of bearings. At present, most of the steel balls used in the domestic market are precision low-noise steel balls, which have problems such as general mute effect and poor reliability. With the improvement of people's living standards, the market has higher and higher requirements for precision silent bearings, and precision silent bearings urgently need precision silent bearing steel balls to match them. In order to meet the needs of precision silent bearing steel balls, many manufacturers have adopted multiple grindings to improve accuracy, resulting in increased costs. . Contents of the invention [0003] In view of the above problems, the present invention provides a grinding process for precision ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B37/025C09K3/14
CPCB24B37/025C09K3/1463
Inventor 马国伟牛同孙心灵
Owner WUXI CITY FEI YUN STEEL BALL
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