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Retainer edge-turning-free forming method based on composite working procedure

A molding method and cage technology, which is applied to casting molding equipment, cores, casting molds, etc., can solve the problems of secondary processing of raw materials without cages, shortened life, etc.

Pending Publication Date: 2021-10-29
浙江中精轴承有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing cages are manufactured, CNC machine tools are used for edge turning. When edge turning is performed, the cage can be made very well, but when edge edge technology is used, edge turning is always performed. Or punching, without secondary treatment of the raw materials used in the cage, resulting in a greatly reduced service life of the cage produced

Method used

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Experimental program
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Effect test

Embodiment

[0056] A method for forming a cage without edge trimming based on a composite process, comprising the following steps:

[0057] S1. Mold making: First make the convex mold, then make the concave mold, put the convex mold and the concave mold together, check to see if the convex mold and the concave mold match, and whether the gap between the two molds is The thickness of the cage, the accuracy of the gap between the two grinding tools and the thickness error of the cage is controlled within 0.01mm;

[0058] 1), first use the 3D drawing software to make the graphics of the mold, and then carry out the NC simulation processing, use the post-processor to produce the NC code, and import the NC program to the CNC milling machine processing center;

[0059] 2), select the appropriate material, place the material on the CNC milling machine, the material is selected as one of tungsten carbide and titanium carbide;

[0060] 3) After the processing is completed, use a cleaning solution...

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Abstract

The invention relates to the technical field of retainer manufacturing, in particular to a retainer edge-turning-free forming method based on a composite working procedure. According to the method, quenching is conducted, metal with the low metal melting point is put into a smelting furnace to be smelted, then metal with the high melting point is added to be smelted, cooling solidification is conducted, annealing treatment is conducted after solidification, the hardness is reduced, and the cutting machinability is improved; residual stress is eliminated, the size is stabilized, and deformation and cracking tendencies are reduced; and grains are refined, the structure is adjusted, structure defects are eliminated the quenching aims to enable supercooled austenite to be subjected to martensite or bainite transformation to obtain a martensite or bainite structure, then tempering at different temperatures is matched, the rigidity, hardness, wear resistance, fatigue strength, toughness and the like of the steel are greatly improved, then different using requirements of various mechanical parts and tools are met, quenching is conducted firstly, then annealing is conducted, and then heating is conducted to form molten metal, so that the service life of a retainer is prolonged.

Description

technical field [0001] The invention relates to the technical field of cage manufacturing, in particular to a method for forming a cage without turning edges based on a composite process. Background technique [0002] The cage, which partially wraps all or part of the rolling elements, and the bearing parts that move with it, is used to isolate the rolling elements, and usually guides the rolling elements and keeps them in the bearing. The role of the cage: when the rolling bearing is working, due to Sliding friction causes bearing heat and wear. Especially under high temperature operating conditions, the action of inertial centrifugal force intensifies friction, wear and heat. In severe cases, the cage will be burned or broken, resulting in the bearing not working properly. Therefore, in addition to a certain strength, the material of the cage is required to have good thermal conductivity, small friction factor, good wear resistance, strong impact toughness, low density, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/24B22D33/06B22D27/04C21D1/18C21D1/26C22C33/04
CPCB22C9/24B22D33/06B22D27/04C21D1/18C21D1/26C22C33/04
Inventor 沈坚林晓亮华尧中邓小雷邓西周文立
Owner 浙江中精轴承有限公司
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