Production method of guide bearing

Abstract

The invention discloses a production method of guide bearing. The guide bearing is produced according to the following process: equal altitude spiral hump is formed on the outer circumferential surface of the cylindrical core mold base, which is corresponded with the spiral sink shape of the inner wall of the guide bearing; coating the release agent on the surface of the core mold; modified resin impregnated fiber cloth is rolled up on the core mold which coating the release agent by using the tube winding machine; putting the fiber cloth rolled core mold in the forming cavity of the guide bearing of the pressing machine horizontally, hotpressing the core mold so that forming; fixing the fiber cloth layer of the outside surface of the core mold, then rotating the core mold, so that the core mold is rotated out by the superficial thread action of the equal altitude spiral hump to obtain a hot shell the spiral sink of which is provided with a hard and smooth internal surface; and last processing the shell, produce the guide bearing. Utilizing the guide bearing by the method, so the fiber cloth at the guide bearing sink cannot be destroyed, and sink is provided with a hard and smooth internal surface, the strength of the guide bearing is high, the service life is long, the production hours is short, pass-rate of production is high, manufacturing cost is low.

Description

technical field [0001] The invention relates to a production method of a bearing, in particular to a production method of a non-metallic guide bearing of a submerged pump. Background technique [0002] Water-lubricated guide bearing is a kind of bearing commonly used in submerged pumps, and it is also a vulnerable part of submerged pumps. The non-metallic guide bearing pressed by fiber cloth impregnated with thermosetting phenolic resin has good acid and alkali resistance, high temperature resistance and wear resistance. Advantages such as low manufacturing cost. CN85200159U discloses a kind of asbestos iron guide bearing and thrust disk friction plate, and specifically discloses the manufacture method of this guide bearing: roll one layer of cellophane on the mandrel, then use the asbestos impregnated modified phenolic resin The resin cloth is rolled tightly to make a prefabricated pipe, and then the prefabricated pipe with the mandrel is placed in the mold cavity, laminat...

AI Technical Summary

Problems solved by technology

The manufacturing methods of these two guide bearings are to use a cylindrical mandrel to press the resin cloth into a prefabricated tube, and then turn the inner wall of the prefabricated tube with a lathe to turn out different shapes of water tanks (runners). This production process is used to turn the water tanks. When the water tank passes through, the warp and weft of the multi-layer fiber cloth will be cut off by the turning tool, so that the fiber cloth layer affected by the cross section of the water tank will lose continuity, thus forming a structural weakness on the pipe wall of the guide bearing. During the installation and use of the guide bearing, it is very easy to break along the direction of the water tank, which affects the service life and working stability of the guide bearing

In addition, the surface smoothness of the water tank made by turning the inner wall of the prefabricated pipe made of non-metallic materials by turning tools is not good, which increases the resistance of the lubricating liquid to pass through, and the impurities in the lubricating liquid are easy to accumulate on the inner surface of the water channel, which makes the shaft surface damaged

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