Ball bearing outer ring groove bottom diameter measurement device and measurement method

Abstract

The invention provides a ball bearing outer ring groove bottom diameter measurement device, and relates to the technical field of bearing detection. The ball bearing outer ring groove bottom diameter measurement device comprises a conical measurement body, a measurement meter, an auxiliary holding frame and multiple auxiliary steel balls. The diameter of the auxiliary steel balls is the same with the nominal value of the diameter of steel balls for bearing measurement. The auxiliary holding frame and multiple auxiliary steel balls are assembled into a whole to form a holding frame steel ball component. The whole conical measurement body has a circular table structure. The measurement meter is used for measuring deviation of distance from the bearing outer ring groove bottom to the end surface of the bearing outer ring. In measurement, the auxiliary steel balls of the holding frame steel ball component are arranged in the steel ball channel for measuring the bearing outer ring, the conical measurement body provided with the measurement meter is arranged in the holding frame steel ball component., the circumferential surface of the conical measurement body is leveled and enabled to be contacted with all the auxiliary steel balls, the conical measurement body is smoothly rotated for a circle and the numerical value of the measurement meter is recoded so that the accurate value of the groove bottom diameter is obtained according to a deviation formula. The ball bearing outer ring groove bottom diameter can be accurately measured, and scratching of the channel can be avoided so that operation is easy and efficiency is high.

Description

technical field [0001] The invention relates to the technical field of bearing groove bottom diameter detection, in particular to a measuring device and method for measuring the groove bottom diameter of an outer ring of a ball bearing. Background technique [0002] At present, the measurement of the groove bottom diameter of the outer ring of the ball bearing is carried out on a bearing outer diameter measuring instrument. The measuring instrument has two fixed fulcrums and one elastic fulcrum; the elastic fulcrum is connected with the measuring table; when measuring, the diameter of the bottom of the bearing groove is measured by comparing with the standard part. This operation has the following disadvantages: [0003] 1. The measuring fulcrum is an annular piece with a certain thickness, which cannot be accurately aligned with the bottom of the groove of the outer ring of the bearing, and the diameter of the bottom of the groove cannot be accurately measured; [0004] 2...

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Problems solved by technology

[0003] 1. The measuring fulcrum is an annular piece with a certain thickness, which cannot be accurately aligned with the bottom of the groove of the outer ring of the bearing, and the diameter of the bottom of the groove cannot be accurately measured;

[0004] 2. The sharp metal edge of the measuring fulcrum may sometimes scratch the bottom raceway of the outer ring of the bearing, resulting in surface quality defects of the bearing;

[0005] 3. When measuring, it is necessary for the surveyor to manually rotate the ferrule with a little force between the two fixed fulcrums. The position and strength of the force applied by different surveyors are often different, and the error of the measurement result is relatively large;

[0006] 4. Higher requirements for the experience and skill level of the surveyors;

[0007] 5. The measurement speed is slow and the efficiency is low

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