A detection method for the diameter tolerance of both ends of miniature cylindrical rollers

Abstract

The invention discloses a method for detecting the tolerance of diameter dimensions of two end faces of a miniature cylindrical roller, and the method employs a detection device. The detection device comprises a substrate, a lifting frame, a photoelectric sensor, a horizontal frame, a servo motor, an elastic clamp, a high-precision miniature camera, a display, and a computer. The detected miniature cylindrical roller has two end faces: a big end face and a small end face. The high-precision miniature camera is used for respectively collecting the image information of the small end face or the big end face of the detected miniature cylindrical roller, and the computer is used for carrying out the digitalized processing of the image information and converting the image information into two-dimensional images and the corresponding diameter dimension tolerance. The diameter dimension tolerance is compared with the designed dimension tolerance of the big and small end faces of a standard miniature cylindrical roller, thereby judging whether the big and small end faces of the detected miniature cylindrical roller meet the design requirements or not. The detection device is small and exquisite in structure, is very convenient to move and carry, is high in detection speed, is high in detection precision, and improves the detection precision of the miniature cylindrical roller.

Description

technical field [0001] The invention belongs to the technical field of automatic detection of bearings, and in particular relates to a detection method for the diameter tolerance of the two ends of a miniature cylindrical roller. Background technique [0002] When grinding miniature cylindrical rollers, the positioning end is usually set on the large end face, and the non-locating end is called the small end face. The nominal diameters of the large end face and the small end face are unequal and the design tolerances are also unequal. Yes, since the small end face of the miniature cylindrical roller usually bears a large axial load when it rotates, it is often necessary to check the machining accuracy of the small end face after grinding, and sometimes the large end face is also tested according to requirements. The machining accuracy of the end face is tested. [0003] There are three problems in detecting the dimensional tolerance of the small end face of miniature cylind...

AI Technical Summary

Problems solved by technology

[0005] Second, the miniature cylindrical roller is small in size, which brings a lot of inconvenience to detection when placed on a large workbench, and the detection accuracy is not high;

[0006] The third is that large measurement errors often occur when manual detection is adopted, and the detection efficiency is relatively low

[0007] Although the tool microscope can also detect the dimensional tolerance of the small end face, the mechanical structure of the tool microscope is complex and requires more manual intervention, so it is difficult to improve the detection efficiency

[0008] In summary, the existing detection methods have certain limitations, especially the dimensional tolerance detection of the small end face has always been a difficult problem in precision measurement

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