Clamping device and plastic dipping process for a plastic dipped bearing retainer

Abstract

The invention discloses a clamping device and a plastic dipping process of a plastic-impregnated bearing retainer. The retainer has a process hole, and the process hole is arranged between adjacent pocket holes of the retainer, and the process holes are evenly spaced along the circumferential direction of the retainer. Setting, the clamping device includes a clamping piece, a radial displacement mechanism and an axial lifting mechanism, the clamping piece is used to insert into the process hole, and only contacts the inner wall of the process hole; the radial displacement mechanism includes a synchronous drive and a moving piece , there are at least three moving parts, which are respectively connected to the synchronous driving part. The synchronous driving part is used to drive the moving part to move synchronously along the radial direction of the holder. The process hole; the axial lifting mechanism is arranged above the radial displacement mechanism and connected with the radial displacement mechanism to drive the radial displacement mechanism and the clamping member to move along the axial direction of the holder. According to the application, the working surface of the mold-impregnated retainer reaches an all-plastic layer, and no clamping marks appear on the surface.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a clamping device and a plastic dipping process for a plastic dipped bearing retainer. Background technique [0002] When the rolling bearing is working, especially when the load is complex and rotates at high speed, the cage has to bear a lot of centrifugal force, shock and vibration, there is a large sliding friction between the cage and the rolling elements, and a lot of heat is generated. The result of the combined action of force and heat can lead to failure of the cage, and in severe cases, it will cause burns and fracture of the cage. Therefore, the cage material is required to have good thermal conductivity, good wear resistance, small friction coefficient, low density, a certain combination of strength and toughness, good elasticity and stiffness, an expansion coefficient similar to that of rolling elements, and good processing performance. Especially in the field of ...

AI Technical Summary

Problems solved by technology

Especially in the field of wind power, wind power products need to use large-scale bearing cages, which have higher functional requirements for bearing cages. At present, the mainstream of bearing cages in the wind power field adopts a metal body covered with a plastic layer structure. The processing technology of the plastic layer mainly includes spraying. There are two kinds of plastic and dipping. From the analysis of product performance, the dipping cage is better, but the current dipping cage products have defects. During the processing of the plastic layer, it is necessary to clamp and move the metal body of the corresponding cage. , the existing clamping equipment will leave scratch marks on the side wall of the cage, so that the plastic layer has defects, and it is impossible to achieve full plastic layer coverage on the outer surface of the metal body, resulting in defects in the performance of the plastic-impregnated bearing cage, which is urgently needed solve

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