Finishing machining method for 40CrNiMoA steel retaining frame

A finishing and cage technology, applied in the direction of manufacturing tools, metal processing equipment, surface polishing machine tools, etc., can solve the problem of increasing the finishing time, without any effect, and improving the surface roughness of the cage without any effect, etc. problem, to achieve good chemical stability, fast polishing speed, and good grinding effect.

Inactive Publication Date: 2017-09-15
LUOYANG LYC BEARING
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  • Abstract
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Problems solved by technology

[0010] If the planetary centrifugal finishing machine and the spiral vibration finishing machine are used to polish the cage of the 40CrNiMoA cage, according to the previous processing method, the rust, scale and burrs on the surface of the cage can be removed to a certain extent, but for The improvement of the surface roughness of the cage has no effect, and the subsequent increase in the polishing time has no effect

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  • Finishing machining method for 40CrNiMoA steel retaining frame
  • Finishing machining method for 40CrNiMoA steel retaining frame

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Embodiment Construction

[0027] The present invention is described in detail in conjunction with specific embodiment:

[0028] A kind of finishing processing method of 40CrNiMoA steel cage, described finishing processing method comprises polishing and brightening operation; Its specific steps are as follows:

[0029] 1) Selection of polishing abrasives: brown corundum is selected as the abrasive, and brown corundum includes brown corundum oblique cylinders, brown corundum oblique triangles and brown corundum balls;

[0030] a) The choice of abrasive when the pocket hole of the 40CrNiMoA steel cage is square: brown corundum oblique cylinder accounts for 1 / 6~1 / 3 of the total amount of abrasive, brown corundum oblique triangle accounts for 1 / 6~1 / 3 of the total amount of abrasive, Brown corundum balls account for 1 / 6~1 / 3 of the total amount of abrasives;

[0031] b) The choice of polishing abrasive when the pocket hole of the 40CrNiMoA steel cage is a circular hole: brown corundum balls account for 1 / 2~2...

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Abstract

The invention belongs to the technical field of bearing cage processing and provides a finishing method for a 40CrNiMoA steel cage. A proposed finishing method for 40CrNiMoA steel cage. The finishing method includes polishing and brightening; brown corundum is selected as the abrasive, and brown corundum includes brown corundum oblique cylinders, brown corundum oblique triangles and brown corundum balls; the abrasive and The workpieces are added to the polishing machine together; the polishing time is 4~5 hours, and it needs to be stopped after every 1.5~2 hours of polishing, the hot water in the container is drained, and cold water is poured in, and the abrasives and workpieces in the box are cooled before polishing; Select φ2.5-φ3.5mm zirconium-aluminum composite balls as bright abrasives, and put the abrasives and workpiece into the polishing machine for 30-40 minutes. The invention reduces the inner and outer surfaces and end surfaces of the cage, and improves the product quality of the cage.

Description

technical field [0001] The invention belongs to the technical field of bearing cage processing, and in particular relates to a finishing method for a 40CrNiMoA steel cage. Background technique [0002] Most of the existing cages are made of brass, hard aluminum, low carbon steel and phenolic laminated cloth tubes, etc. These materials have low hardness; there are currently two methods of polishing: [0003] 1. The planetary centrifugal polishing machine XBP160B is used for polishing processing, abrasive material: zirconia, and polishing time: 30-40 minutes. [0004] 2. Spiral vibrating finishing machine LMP600-ZD is used for finishing. Abrasives: white corundum grinding stone and resin grinding stone. Finishing time: 5-8 hours. [0005] The principle and method of polishing processing of the above two equipments: [0006] Spiral vibration finishing machine: When the vibration motor rotates at high speed, the exciting force generated by the two eccentric blocks changes al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B31/00B24B55/02
CPCB24B31/00B24B55/02
Inventor 卢振伟王超常永红郭晓玉姜艳红张玉玲冯振陈帅刘岩刘强卢辉
Owner LUOYANG LYC BEARING
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