High precision hot press silicon nitride ceramic ball bearing and its manufacturing method

A silicon nitride ceramic ball, high-precision technology, used in ball bearings, manufacturing tools, bearing components, etc., can solve the problems of high-precision ceramic bearings cannot be purchased, hot-pressed silicon nitride materials are difficult to process hard and brittle materials, etc.

Active Publication Date: 2005-05-25
SHENYANG JIANZHU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the hot-pressed silicon nitride material is a hard and brittle material that is extremely difficult to process, the current international market can only...

Method used

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  • High precision hot press silicon nitride ceramic ball bearing and its manufacturing method
  • High precision hot press silicon nitride ceramic ball bearing and its manufacturing method
  • High precision hot press silicon nitride ceramic ball bearing and its manufacturing method

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Embodiment Construction

[0061] The specific technical solutions of the present invention will be further described below in conjunction with embodiments:

[0062] Such as Figure 1 ~ Figure 4The high-precision hot-pressed silicon nitride ceramic ball bearing shown includes: an inner ring 2 and an outer ring 1 made of steel. The inner ring 2 and the outer ring 1 respectively have two arc-shaped raceways facing each other. One of the arc raceways 5, 6; a number of ceramic ball rolling elements 3 arranged between and in contact with the raceways 5, 6 of the inner and outer rings; one set between the inner and outer rings 1, 2 to maintain the ceramic ball rolling elements The rolling element isolation ring of 3 is the cage 4. The ball bearing is of angular contact type, that is to say, the outer ring 1 and the inner ring 2 respectively have a respective outer raceway 5 and an inner raceway 6, which face each other with their concave surfaces facing each other. In this example , The outer ring 1 has a lock, wh...

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Abstract

A high-precision hot-pressed silicon nitride ceramic ball bearing and its manufacturing method belong to the bearing manufacturing technology, and are suitable for being installed on high-precision, high-speed, high-end CNC machine tools and machining center spindles. The high-precision hot-pressed ball bearing provided by the invention Silicon nitride ceramic ball bearings, comprising: an inner ring and an outer ring made of steel, the inner ring and the outer ring respectively having arcuate ball bearing raceways; disposed between and in contact with the ball bearing raceways of the inner and outer rings ceramic ball rolling element; a rolling element isolation ring set between the inner and outer rings to hold the ceramic ball, that is, the cage; its characteristic is that the ceramic ball rolling element is obtained by conical grinding process and technical equipment, and its precision Reach G5, G3 level. The characteristics of the invention are: high limit running speed; high running precision; high temperature resistance, and can run without lubrication; light weight; can work stably for a long time in some highly corrosive media; high degree of standardization, easy to maintain and exchange.

Description

Technical field [0001] The invention relates to a high-precision angular contact ball bearing, in particular to a high-precision hot-pressed silicon nitride ceramic ball bearing and a manufacturing method thereof. It belongs to the bearing manufacturing technology and is suitable for installation in high-precision, high-speed, high-end CNC machine tools. and on the machining center spindle. Background technique [0002] CNC machine tools are important basic equipment for the national economy, which reflect the comprehensive strength level of a country. The core support of the CNC machine tool spindle is a high-speed precision ball bearing. The steel ball rolling elements in the ball bearing are held laterally by a steel cage. The steel balls are arranged in the raceways of the inner and outer rings also made of steel. The main disadvantage of these known bearings is the limited service life at high rotational speeds. This is because the poor performance of the frictional s...

Claims

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Application Information

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IPC IPC(8): B24B11/06F16C19/06F16C33/32F16C33/44F16C33/62F16C33/64
Inventor 吴玉厚张珂
Owner SHENYANG JIANZHU UNIVERSITY
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