A method for measuring the outer spherical surface of a bearing

Abstract

The invention provides a method for measuring the outer spherical surface of a bearing, comprising the following steps: (1), selecting a standard part, measuring and marking the ball diameter D1 at the midpoint in the width direction of the standard part and the ball diameter D2 at the opposite corner; (2), Use the ball diameter D1 at the midpoint of the standard part to calibrate the first meter; (3), use the ball diameter D2 at the opposite corner of the standard part to calibrate the second meter, and the supporting force of the second meter measuring head and the support point points to the axis of the standard part; ( 4) Under the same conditions as the proofreading state of step (2) and step (3), use the first instrument to measure the ball diameter in the middle of the workpiece to obtain the deviation value D1', and then use the second instrument to measure the diagonal position of the workpiece Ball diameter, get the deviation value D2'; (5), use D1'‑D2', get the difference and compare it with the set spherical deviation. The invention is convenient and accurate in measurement, does not rely on the judgment experience of testing personnel, and ensures the requirements of product quality.

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] An outer spherical ball bearing is a kind of deep groove ball bearing. It has a bearing inner ring, a bearing outer ring, and a rolling element 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 interact with The inner hole of the bearing seat is relatively oscillated to realize automatic centering, which solves the problem of poor axis alignment between the shaft and the bearing seat hole, or the shaft length and large deflection. The use environment of outer spherical ball bearings is relatively harsh, and they are generally used for agricultural machinery such as mining machinery, harvesters, and threshers, and their accuracy requirements are lower than ordinary deep groove ball...

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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