Spring coil free dust-free cover secondary press-fitting method for micro bearing

Abstract

The invention relates to a double pressing method on a dust cap without spring ring that is used for a miniature bearing, the first pressing method is mainly to make the dust cap of the bearing enter the dust cap groove and extend radially, the specific pressing method is to firstly adjust a right angle upper flat die (3) and a lower die and keep them concentric, then a bearing (1) is placed in the lower die to locate, a dustproof cap (2) is arranged in the dustproof cap groove of the outer race of the bearing, and finally a pressing machine is used for making the end face of the right angle upper flat die to stamp the folded face of the dustproof cap so that the radial dimension is increased, the edge is uniformly pressed into the dustproof cap groove of the outer housing of the bearing (1); the second pressing method is mainly to tightly press the dustproof cap of the bearing into the dustproof cap groove, the specific pressing method is to first adjust a right angle upper pressing die (3.1) and a lower die and keep them concentric, then the bearing of the dustproof cap has been pressed flat is placed in the lower die to locate, finally, a round angle R of the round angle upper pressing die is used for curling and pressing the dustproof cap by a pressing machine, which can considerably improve the reliability of the bearing assembly.

Description

technical field [0001] The invention belongs to the technical field of bearing manufacture, and in particular relates to a method for double-pressing a spring-ring-free dustproof cover for a miniature bearing. Background technique [0002] In the production and manufacture of miniature bearings, it is necessary to press and assemble the dust cover without spring coils, and the stamping assembly is usually used once. The assembly process of this method is: first adjust the upper and lower molds, then place the bearing in the lower mold, and put the dust cover Place it in the dust cover groove of the bearing outer ring, and finally punch the dust cover into the dust cover groove of the bearing outer ring. Bearings assembled and manufactured by this method are likely to cause the dust cover not to fully enter the dust cover groove or the dust cover becomes loose after entering the groove, and the dust cover is excessively deformed after stamping, resulting in deformation of the...

AI Technical Summary

Problems solved by technology

Bearings assembled by this method are likely to cause the dust cover not to fully enter the dust cover groove or the dust cover becomes loose after entering the groove, and the dust cover is excessively deformed after stamping, resulting in deformation of the bearing ring and affecting the bearing accuracy

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