Method for measuring spherical outside surface of bearing

Abstract

The invention provides a method for measuring a spherical outside surface of a bearing. The method comprises the following steps: (1) selecting a standard element, measuring and labeling a sphere diameter D1 at the center point in the width direction of the standard element and a sphere diameter D2 at opposite angles; (2) calibrating a first instrument by using the spherical diameter D1 at the center point of the standard element; (3) calibrating a second instrument by using the sphere diameter D2 at opposite angles of the standard element, wherein the support force of a measurement head and a support point of the second instrument points to the axis of the standard element; (4) measuring the sphere diameter in the middle of a workpiece by using the first instrument under the condition that the calibration state is same as the calibration states in the steps (2) and (3), so as to obtain a deviation value D1', and measuring the sphere diameter at the opposite angles by using the second instrument, so as to obtain a deviation value D2'; and (5) obtaining a difference value by using D1'-D2' and comparing the difference value with the set spherical deviation. The method is convenient and accurate to measure, and is not dependent on the judgment experience of detecting personnel, and the requirements of the product quality are ensured.

Description

technical field [0001] The invention relates to the technical field of outer spherical bearings, in particular to a method for measuring the outer spherical surface of a bearing. Background technique [0002] The outer spherical ball bearing is a kind of deep groove ball bearing. It has a bearing inner ring, a bearing outer ring, and rolling elements between the bearing inner ring and the bearing outer ring. The outer diameter surface of the bearing outer ring is a spherical surface, which can be used with The inner hole of the bearing seat swings relative to each other to realize automatic centering, which solves the problem of poor alignment between the axis of the shaft and the hole of the bearing seat, or the long shaft and large deflection. The use environment of the outer spherical ball bearing is relatively harsh, and it is generally used in agricultural machinery such as mining machinery, harvester, thresher, etc., and the accuracy requirement is lower than that of o...

AI Technical Summary

Problems solved by technology

At present, the detection of the spherical surface of the outer ring of the outer spherical ball bearing still relies on the visual measurement of the ring R gauge, and judges whether it is qualified by looking at the light leakage gap between the R gauge and the outer spherical surface. It depends on the experience of the inspectors, and the error is relatively large. meet product requirements

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