Insulating bearing with insulating ferrule and manufacturing method thereof

A technology of insulating bearings and insulating sleeves, which is applied in the direction of rotating bearings, bearings, bearing components, etc., can solve the problems of cumbersome and complicated manufacturing processes, hidden dangers of insulation reliability, and high manufacturing costs, so as to reduce costs, improve insulation levels and insulation Effects of Reliability and Manufacturing Cost Reduction

Inactive Publication Date: 2013-03-20
SHANGHAI F&S BEARING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another object of the present invention is to provide a method for manufacturing an insulating bearing with an insulating ferrule, so as to overcome the quality problems of the cur

Method used

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  • Insulating bearing with insulating ferrule and manufacturing method thereof
  • Insulating bearing with insulating ferrule and manufacturing method thereof
  • Insulating bearing with insulating ferrule and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] One-piece mechanism or injection molding to make the insulating outer ring.

[0071] as attached figure 1 , an insulating bearing with an insulating outer ring made of insulating materials as a whole, including an outer ring 11, an inner ring 12, balls 13 and a retainer 14, wherein the outer ring 11 is made of ceramic materials, and ceramic tubes, rings or rods are selected. The insulating outer ring 11 is made by mechanical processing, and then assembled with the inner ring 12 and balls 13 made of bearing steel to form an insulating bearing.

[0072] In this embodiment, when the insulating material is resin or plastic, the insulating outer ring can also be made by precision injection molding.

Embodiment 2

[0074] The insulating outer ring is made by split mechanism or injection molding. The insulating outer ring is composed of an insulating ring sleeve and a steel ring sleeve with an outer raceway.

[0075] The insulating ring sleeve and the steel ring sleeve with outer raceway are press-fitted into one body. The shape of the insulating ring sleeve in this embodiment is selected as one end with an inward edge 3121 , as attached image 3 .

[0076] as attached image 3 , the half body is made of insulating material to insulate the insulating bearing of the outer ring, including the outer ring 31, the inner ring 32, the ball 33 and the cage 34, wherein the outer ring 31 is passed by the bearing steel ring sleeve 311 with the outer raceway. Press in a ceramic insulating ring sleeve 312 with an inward edge at one end to make an insulating outer ring.

[0077] The manufacturing process of bearing steel ring sleeve 311 with outer raceway is the same as that of normal bearing steel ...

Embodiment 3

[0088] The insulating outer ring is made by separate injection molding. The insulating outer ring is composed of an insulating ring sleeve and a steel ring sleeve with an outer raceway.

[0089] The insulating ring sleeve and the steel ring sleeve with outer raceway are injection-molded as a whole. Image 6 , The insulating ring sleeve of this structure adopts injection molding.

[0090] as attached Image 6 , the insulating bearing of the insulating outer ring made of phenolic resin, including the outer ring 61, the inner ring 62, the ball 63 and the retainer 64, wherein the outer ring 61 is pre-molded by the bearing steel ring sleeve 611 with the outer raceway through the injection mold Embedding injection molding to make the insulating outer ring. After injection molding, phenolic resin forms an insulating ring sleeve 612 with inward edges 6121 at both ends. The insulating ring sleeve 612 and the bearing steel ring sleeve 611 form a tight fit relationship in the radial di...

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Abstract

The invention relates to an insulating bearing with an insulating ferrule and a manufacturing method thereof. The insulating bearing is characterized in that either an outer ring or an inner ring is the insulating ferrule, the insulating ferrule comprises a whole-body insulating ferrule or a half-body insulating ferrule, the whole-body insulating ferrule is made from a whole-body insulating material, and the half-body insulating ferrule is formed in a manner that a steel ferrule and an insulating ferrule are integrated through mechanical press-mounting or injection molding. According to the insulating bearing with the insulating ferrule and the manufacturing method of the insulating bearing with the insulating ferrule, the design and manufacture of the insulating ferrule are simple and easy, the insulating ferrule can be used for manufacturing insulating bearings of any type and shape, and the manufacturing cost is reduced; and meanwhile, the existing insulating coating is replaced with an insulator, so that the insulating reliability of the insulating bearing is greatly improved, the electrical erosion failure of the bearing can be effectively avoided, and then, the running reliability of the bearing is improved and the service life of the bearing is prolonged, thereby having practical engineering significance.

Description

technical field [0001] The invention relates to the technical field of rolling bearings, in particular to an insulating bearing with an insulating ring and a manufacturing method thereof. Background technique [0002] For industrial large and medium-sized motors, especially variable frequency motors or motors powered by frequency converters, due to reasons in motor design and manufacturing, high shaft voltages are often generated on the rotors, and through the interconnected motor shafts, bearings, end covers and machine The seat forms a loop current (called axial current or axial current). The generation of axial current not only causes considerable deep damage to the raceway of the bearing ring and the surface of the rolling element, but also accelerates the deterioration of the lubricant in the bearing, thereby It seriously threatens the safety and operational reliability of the bearing and the main engine. Even for small to medium-sized motors or non-motor devices (such...

Claims

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Application Information

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IPC IPC(8): F16C19/00F16C33/62F16C33/64
Inventor 赵联春陈淑英
Owner SHANGHAI F&S BEARING TECH
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