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Grinding process of high-precision bearing steel ball

A bearing steel ball and grinding process technology, applied in the field of bearing steel ball processing, can solve the problems of difficult cleaning, clogging, burns, etc., and achieve the effects of saving grinding time, reducing damage rate, and reducing scrap rate

Pending Publication Date: 2021-12-03
黄山辉科机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention aims to provide a high-precision bearing steel ball grinding process to solve the technical problems of steel ball surface scratches, burns, groove blocking, low production efficiency and difficult cleaning during the production process of bearing steel balls. So as to ensure the accuracy and efficiency of the production process of bearing steel balls

Method used

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  • Grinding process of high-precision bearing steel ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Using a high-precision bearing grinding process to prepare 8mm bearing steel balls, the specific process is as follows:

[0029] S1: Making ball blanks: Make ball blanks from bearing steel wires through a cold heading machine (8mm ball mold), and put the ball blanks into a light ball machine to polish them to obtain smooth ball blanks, and then put the smooth ball blanks into high temperature Quenching in a treatment furnace to obtain bearing steel ball blanks;

[0030] S2: Initial grinding: put the bearing steel ball blank described in step S1 into a grinder for initial grinding, and the proportion of the grinding medium is 6%:15%:79 of white corundum micropowder, circulating fluid, and water %; the particle size of the white corundum powder is 1-10 μm of the diameter of the steel ball; the grinding speed is 40rpm, the pressure is 1Mpa; the magnetic field strength of the permanent magnet is 2T.

[0031] S3: Screening and grading: the first-ground bearing steel balls d...

Embodiment 2

[0036] Using a high-precision bearing grinding process to prepare 8mm bearing steel balls, the specific process is as follows:

[0037] S1: Making ball blanks: Make ball blanks from bearing steel wires through a cold heading machine (8mm ball mold), and put the ball blanks into a light ball machine to polish them to obtain smooth ball blanks, and then put the smooth ball blanks into high temperature Quenching in a treatment furnace to obtain bearing steel ball blanks;

[0038] S2: Initial grinding: put the bearing steel ball blank described in step S1 into a grinder for initial grinding, and the proportion of the grinding medium is 8%:14%:78 of white corundum micropowder, circulating fluid, and water %; the particle size of the white corundum powder is 1-10 μm of the diameter of the steel ball; the grinding speed is 60rpm, the pressure is 1Mpa; the magnetic field strength of the permanent magnet is 2T.

[0039] S3: Screening and grading: the first-ground bearing steel balls d...

Embodiment 3

[0044] Use a high-precision bearing grinding process to prepare 6mm bearing steel balls. The specific process is as follows:

[0045] S1: Making ball blanks: Make ball blanks from bearing steel wires through a cold heading machine (6mm ball mold), and put the ball blanks into a light ball machine to polish them to obtain smooth ball blanks, and then put the smooth ball blanks into high temperature Quenching in a treatment furnace to obtain bearing steel ball blanks;

[0046]S2: Primary grinding: put the bearing steel ball blank described in step S1 into a grinder for primary grinding, and the proportion of the grinding medium is 6%:15%:79 of white corundum micropowder, circulating fluid, and water %; the particle size of the white corundum powder is 1-10 μm of the diameter of the steel ball; the grinding speed is 20rpm, the pressure is 1Mpa; the magnetic field strength of the permanent magnet is 2T.

[0047] S3: Screening and grading: the first-ground bearing steel balls desc...

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Abstract

The invention discloses a grinding process of a high-precision bearing steel ball. The grinding process sequentially comprises the following process steps of S1, manufacturing a ball blank, specifically, manufacturing a bearing steel wire into the ball blank through a cold heading machine, and grinding and quenching the ball blank to obtain the bearing steel ball blank; S2, primary grinding, specifically, putting the bearing steel ball blan into a polishing machine to be subjected to the primary grinding; S3, screening and grading, specifically, screening the steel balls obtained after the primary grinding through a screening machine; S4, fine grinding again, specifically, conducting secondary grinding on the screened bearing steel balls, and obtaining the high-precision bearing steel ball; and S5, cleaning and packaging, specifically, cleaning and drying the bearing steel balls, and packaging and selling the bearing steel balls. The grinding process of the high-precision bearing steel ball is realized by adjusting the proportion of grinding medium, the particle size of white corundum micro powder and the grinding rotating speed and pressure, through the use of a permanent magnet, scrap iron generated in the grinding process is effectively removed, the steel ball is prevented from being scratched in the grinding process, and by adding a screening process, comprehensive utilization of the ball blank with different particle sizes and the precision of the secondary grinding are realized.

Description

technical field [0001] The invention relates to the technical field of bearing steel ball processing, in particular to a grinding process of high-precision bearing steel balls. Background technique [0002] Steel balls are divided into grinding steel balls, forged steel balls and cast steel balls according to the production and processing technology. According to the processing materials, it is divided into bearing steel balls, stainless steel balls, carbon steel balls, etc. Among them, the bearing steel ball is an important basic component of the industry. The processing raw material of bearing steel ball is bearing steel wire rod, and the existing processing technology of bearing steel ball includes wire drawing, cold heading, light ball, heat treatment, hard grinding, lapping, cleaning and appearance inspection in sequence. The bearing steel is drawn and cold-headed to obtain the ball blank, and the outer ring belt and two poles of the ball blank are removed after the b...

Claims

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Application Information

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IPC IPC(8): B24B1/00B24B11/02B24B55/12
CPCB24B1/00B24B11/02B24B55/12
Inventor 朱文辉江文斌许科许文香
Owner 黄山辉科机械科技有限公司
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