Method and device for measuring contact angle of ball bearing

Abstract

The invention relates to a method and a device for measuring a contact angle of a ball bearing. The method comprises the steps of applying an axial preload on an outer ring of the bearing; rotating an inner ring of the bearing and the outer ring of the bearing in opposite directions; regulating the rotating speed of the inner ring of the bearing and the outer ring of the bearing so as to record the rotating speed of the inner ring of the bearing and the outer ring of the bearing when a bearing cage keeps relatively static; and computing the contact angle of the bearing according to the formula of alpha=arccos[Dcp(ni+ne)/Dw(ni-ne)]. The device provided by the invention comprises a working table; a speed regulating motor is installed on the working table; an output shaft of the speed regulating motor is provided with a mandrel; the upper part of the bearing is provided with a load block of the outer ring of the bearing for compacting the bearing; the upper part of the load block is provided with a load block driving device; and the working table is provided with a speed measuring device for measuring the rotating speed of the load block and the mandrel. According to the method and the device, the contact angle is computed through the rotating speed ratio of the inner ring of the bearing to the outer ring of the bearing when the differential speed is equal to 0; and the method is convenient to operate and accurate and reliable in a measuring result.

Description

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AI Technical Summary

Benefits of technology

This patented technology helps calculate how well two bearings work together by measuring their rotation speeds at different times during use. By comparing these measurements with each other, it can be used to accurately determine if there are any issues or defects between them. These results help companies make better-quality products more efficiently while also providing valuable insights into what they're doing right.

Problems solved by technology

This patented technical problem addressed in this patents relates to accurately measuring the contact angles (contact angles) on balls used in rolling-ball valve mechanisms that are designed specifically for high pressure applications such as hydraulic systems or nuclear power plants. Current methods involve testing each component separately before assembly into an overall system, but these techniques may result in errors due to factors like manufacturers' specifications and environmental conditions during operation.

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