Self-regulating straight line bearing and machining method thereof

Abstract

The invention relates to a self-adjustable straight bearing, comprising a bearing ring, a holder, a steel ball, and dust-proof cover. Wherein, the bearing ring is formed by a plastic case and a roller cushion plate; several roller cushion plates are mounted in the axial groove of plastic case in same distance; the axial rolling channel of roller cushion plate is relative to the axial roller groove of plastic holder to guide the rolling of rollers. The processing method comprises: using polyoxymethylene resin with injector and auxiliary mould to inject mold the plastic case; using bearing steel via hot rolled, cool drawing, hydraulic pressing, and finished milling to prepare the roller cushion plate whose back is a arc, abdomen is arc rolling groove and two sides has axial grooves; matching the plastic case and the roller cushion plate with plastic holder and the roller; and measuring the accuracy tolerance on installed bearing product with special device. The invention can enlarge the contact surface when rolling roller, adjust the tolerance to operate stably, improve operation speed, improve the load for 3 times and prolong service life for 27 times with automatic correction function.

Description

technical field [0001] The invention relates to a bearing and a manufacturing method thereof, in particular to a production and processing method of a self-adjusting linear bearing. Background technique [0002] The steel ferrule of the linear bearing adopts Gr15 bearing steel pipe and then rolls the special-shaped pipe. After cutting, use the machine tool to process the inner and outer grooves of the inner and outer diameter raceway steps. After quenching and heat treatment to reach the specified hardness, rough and fine centerless cylindrical grinding is carried out for outer diameter grinding. Rough and fine grinding of the inner hole is carried out by a special internal grinding machine, and then the inner diameter is ground by a special grinding machine to meet the tolerance accuracy requirements, and finally both ends are ground by a plane grinder, so that the production of the entire ferrule is considered complete. Before assembly, the ferrule should be graded with a...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the current linear bearing ferrule adopts bearing steel special-shaped tubes to process many processes, which is time-consuming and labor-intensive, and consumes a lot of materials. At the same time, it is difficult to control the quality of parts in each process, which cannot meet the requirements of various customers.

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