Method for measuring groove center distance of outer groove of bearing

Abstract

The invention discloses a method for measuring the groove center distance of an outer groove of a bearing, which comprises the following steps of: a, preparing a micrometer and setting the measuring end of the micrometer as a measuring ball, wherein the diameter d of the measuring ball is equal to the radius R of a measured channel; b, adjusting a distance E between the lower end of the measuring ball of the micrometer and a measuring plane according to a theoretical value B0 of the groove center distance and a theoretical value A0 of a groove apex distance, wherein E=(A0+B0)-d / 2; c, putting the measured bearing on the measuring plane to ensure that one channel arc of the bearing is completely matched with the measuring ball of the micrometer, and measuring the reading X of the micrometer; d, turning the measured bearing to ensure that the other channel arc of the bearing is completely matched with the measuring ball of the micrometer, and measuring the reading Y of the micrometer; e, measuring the actual total height H of the measured bearing; and f, calculating the actual groove center distance B of the measured bearing according to a formula B=(X+Y)-H. The invention has the characteristics of simple detection method and high detection accuracy.

Description

technical field [0001] The invention belongs to the technical field of bearing measurement, in particular to a method for measuring the center distance of outer grooves of bearings. Background technique [0002] In recent years, my country's bearing industry has developed rapidly, but the domestic measurement technology for bearings is still relatively backward, especially the measurement method for the center distance of the outer groove of the bearing, and the center distance of the outer groove of the bearing is one of the important testing items of the bearing. It can directly affect the clearance value of the finished bearing; at present, the measurement of the center distance of the outer groove of the bearing in China generally uses the inspector to measure the actual groove center distance with a profiler; however, due to different inspectors, the measurement method is also different. However, the final measured actual groove center distance also has a large error, wh...

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Problems solved by technology

[0002] In recent years, my country's bearing industry has developed rapidly, but the domestic measurement technology for bearings is still relatively backward, especially the measurement method for the center distance of the outer groove of the bearing, and the center distance of the outer groove of the bearing is one of the important testing items of the bearing. It can directly affect the clearance value of the finished bearing; at present, the measurement of the center distance of the outer groove of the bearing in China generally uses the inspector to measure the actual groove center distance with a profiler; however, due to different inspectors, the measurement method is also different. However, the final measured actual groove center distance also has a large error, which will cause the actual groove center distance of the produced bearings to fail to meet the standard, seriously affect the clearance value of the finished bearing, and greatly reduce the bearing performance of the finished bearing. The pass rate also affects the production efficiency of the enterprise; and the detector is quite expensive, which also increases the production cost of the enterprise to a certain extent

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