A kind of processing method of bearing ring assembly
A bearing ring and processing method technology, applied in the field of parts processing, can solve the problems of easy deformation and poor mechanical properties of the main thrust retaining ring, and achieve the effects of excellent comprehensive mechanical properties, good position, and avoiding warpage deformation.
Active Publication Date: 2022-07-22
CHINA RAILWAY CONSTR HEAVY IND
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Problems solved by technology
[0005] The purpose of the present invention is to provide a processing method for a bearing ring assembly to solve the problems of easy deformation and poor mechanical properties in the process of processing the main thrust retaining ring
Method used
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Embodiment
[0041] see Figure 1 to Figure 4 , A method for processing a bearing ring assembly, this embodiment is applied to the processing of a main bearing ring assembly of a roadheader.
[0042] A method for processing a bearing ring assembly, comprising the following steps:
[0043] Step A: the bearing ring assembly includes a first outer ring, a second outer ring and a main thrust retaining ring, and the second outer ring blank 2 and the main thrust retaining ring blank 3 in the bearing ring assembly are forged together during forging;
[0044] see figure 1 , the wall thickness of the finished main push retaining ring in this embodiment is 40mm and the diameter is 4 m, which is a typical thin-walled workpiece. If the main push retaining ring blank 3 is forged separately, it is very easy to produce warping deformation during the forging process, and there is no guarantee The consistency of the internal organization of the bearing ring assembly is not conducive to improving the mech...
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Abstract
The invention provides a processing method of a bearing ring assembly. The process includes the following steps: co-forging the second outer ring blank and the main thrust retaining ring blank in the bearing ring assembly, and then performing rough machining and quenching and tempering treatment; interfering with the main thrust retaining ring blank and the first outer ring blank, carry out together Low temperature tempering treatment: Quenching and magnetic particle inspection are performed on the raceway surface of the main thrust retaining ring blank, and the qualified main thrust retaining ring blank is interference fit with the first outer ring blank, and then low temperature tempering treatment and finishing are performed again. In the invention, the main thrust retaining ring blank and the second outer ring blank are forged together, which can not only avoid the deformation and cracking of the main thrust retaining ring blank during the separate forging process, but also ensure the consistency of the internal organization of the second outer ring forging and the main thrust retaining ring forging. The first outer ring blank and the main push-retaining ring blank are interference fit, and the first outer ring blank is used as a fixed tool for the main push-retaining ring blank, and heat treatment or processing is carried out together, which saves the process and reduces the number of tooling and production costs. .
Description
technical field [0001] The invention relates to the technical field of parts processing, in particular to a method for processing a bearing ring assembly. Background technique [0002] The main bearing of the roadheader includes the bearing ring assembly, which includes the first outer ring, the second outer ring and the main thrust retaining ring in an assembly relationship. ), the wall thickness of the main thrust ring is very small relative to its diameter, which is a typical thin-walled workpiece, which is prone to warping and deformation during processing, and its processing quality is difficult to guarantee; while the main thrust ring plays a protective seal in the main bearing, The function of preventing foreign matter from entering the sealing area of the main bearing, if the processing quality of the bearing ring components, especially the main thrust retaining ring, cannot be guaranteed, it will have a negative impact on the mechanical properties of the main bear...
Claims
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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 解金东许正根麻成标代静静吴双
Owner CHINA RAILWAY CONSTR HEAVY IND