Method for detecting roundness and sphericity of inner sphere of outer ring of knuckle bearing

Abstract

The invention relates to a method for detecting the roundness and the sphericity of an inner sphere of an outer ring of a knuckle bearing. The method comprises the following steps that (1), different sections of the inner sphere of the outer ring of the knuckle bearing are selected; (2), two pairs of measurement sensors which are perpendicular to each other and are located on the same plane are adopted to measure the diameter of each section for many times; (3), the diameter data obtained by measuring the same section for many times are averaged, the measurement values and the average value are compared and analyzed, and the roundness of the sections of the inner sphere of the outer ring is judged according to the error; (4), according to the diameter data of the different sections, a radian is calculated, an average value is obtained, the radian values and the average value are compared and analyzed, and the sphericity of the inner sphere of the outer ring is judged according to the error; (5), the percent of pass of the knuckle bearing is determined; (6), the error is analyzed. The method for detecting the roundness and the sphericity of the inner sphere of the outer ring of the knuckle bearing has the advantages that non-contact measurement is achieved, and the surface of the knuckle bearing is not damaged; the application range is wide, operation is easy, and the safety is high; the detection precision and efficiency are high, and development value is achieved.

Description

technical field [0001] The invention relates to a method for detecting the sphericity of the inner spherical surface of the outer ring of a joint bearing. Background technique [0002] Joint bearings are mainly composed of an outer spherical surface of an inner ring and a special structure of an inner spherical surface of an outer ring, which can withstand large loads. The structure of the joint bearing is simpler than that of the rolling bearing, which is mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. Joint bearings are generally used for low-speed swing motion (that is, angular motion). Since the motion surface is spherical, it can also perform tilting motion (that is, self-aligning motion) within a certain angle range. When the temperature is large, it can still work normally. [0003] Sphericity indicates the difference between the shape of non-spherical particles and the spherical shape, also known a...

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Problems solved by technology

[0004] As an important parameter of the inner spherical surface of the outer ring of the joint bearing, the sphericity has a great influence on its working process. However, the ordinary equipment of the existing detection technology cannot be measured without damaging the surface of the product, and the measurement data is not accurate enough, which will damage the product. surface

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