Method for manufacturing linear bearing made from full stainless steel

Abstract

This invention relates to a manufacturing method for stainless steel linear bearings including the following steps: first of all cutting a stainless steel tube to a tubular stock, then turning it to a tubular inside wall with interphase axial concave arc side and axial salient small concave arc side to prepare a bearing ferrule after heat process and rough grinding, in which a holder is made by punching a stainless steel cold-rolled plate on a punch with a die to a blank plate, then punching a middle groove, pulling a rolling runner, then punching a ball bearing groove, cutting outskirt and shaping it precisely.

Description

technical field [0001] The invention relates to a method for manufacturing a linear bearing, in particular to a production and processing method for a stainless steel linear bearing. Background technique [0002] The ferrule of the ordinary linear bearing is made of GGr15 bearing steel special-shaped tube. After blanking, the inner and outer diameters of the ferrule are firstly positioned and processed within the tolerance range, and then the entire ferrule is heat treated, and then the inner and outer diameters are rough and finely ground. Circle accuracy requirements. The bearing cage is made of engineering plastics and is injection molded into a round tube by an injection molding machine. The steel balls of various specifications and the rubber dust cover are made of bearing steel. Before assembly, classify the bearing rings, and then assemble the finished product according to the sorting level. Because ordinary linear bearings cannot be used in special and harsh enviro...

AI Technical Summary

Problems solved by technology

The linear bearing cage is the main part, and the plastic cage is an injection molding product of the plastic injection molding machine without other processing. The heating voltage and current are very strict during the injection molding process, and the injection molding products are in three shifts, so There are differences in current and voltage between day and night, and there are certain differences in the products produced, so it is difficult to ensure the stability of the quality in assembly.

In addition, the mechanical strength of the plastic cage is not very strong, and the surface roughness on both sides of the raceway is less than 1.6. The steel ball and the plastic cage raceway work in reciprocating friction. After a certain period of time, the surface of the raceway is worn, thereby reducing the tolerance accuracy. Shorten the service life, and also affect the operating life of other components and supporting complete machines

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