Method and device for realizing mini-size flange bearing outer-ring inner-channel grinding process

Abstract

Discloses is an external circular channel processing method and a device of a minisize flanged bearing, wherein firstly a special grooved shaft sleeve is designed, and a groove is arranged in the middle along the length position; one end is provided with a groove and one end is provided with a thread hole; two rolling rods 2 are provided with equal numbers of grooved shaft sleeves. The space between each grooved shaft sleeve arranged on each rolling rod is equal, and the grooved shaft sleeves on the two rolling rods are symmetrically arranged to each other and are fixed by a screw 10; the two rolling rods are arranged inside a supporting seat 8 which is fixed inside a positioning groove of a bottom seat 7; the inside of the groove arranged on the two symmetrically arranged grooved shaft sleeves are provided with a small external diameter of a flanged bearing external cicle1e, and a stable and accurate positioning is completed during an ultra-fine processing; the swing head position of an ultra-fine oilstone 4 is adjusted and the ultra-fine processing of the flanged bearing external circular channel is completed. Because the method adopts a plurality of pairs of grooved shaft sleeves to perform the ultra-fine processing of the flanged bearing external circular channel, compared with the ultra-fine processing of an end pressing style with centerless fixture, the efficiency is greatly enhanced.

Description

technical field [0001] The invention belongs to the technical field of miniature bearing processing, in particular to a method and a device for realizing the grinding process of the inner groove of the outer ring of the miniature flange bearing. Background technique [0002] Miniature bearings are widely used in the micro-motor and instrumentation industries. With the development of main engine technology, the precision requirements for miniature bearings are getting higher and higher, and the requirements for the surface quality of the raceway, which is one of the key technical indicators, are also getting higher and higher. Miniature flange bearings are a branch of miniature bearings. figure 1 It is a schematic diagram of the structure of the outer ring of the flange bearing (1). It can be seen that the surface quality of the groove is very high, and the superfinishing machine for the groove of the outer ring of the flange bearing (1) is mainly used. [0003] There are t...

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Problems solved by technology

[0007] This type is mainly used for the outer surface of the workpiece with a flange or a slope, and can also be used for the ultra-finishing of a cylindrical groove. Generally, only one piece can be processed at a time, and the processing efficiency is low, but it is easy to realize automation.

[0008] The outer ring of the flanged bearing (1) has a flanged step. From the analysis of the shape, it is reasonable to use a roller-type centerless fixture, but it is difficult to stably position the workpiece with a double-roller centerless fixture.

However, the processing efficiency of the roller-type centerless fixture is low, and the equipment cost is high, which cannot meet the needs of high-efficiency and ultra-precision flange outer ring grooves.

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