Automatic measurement of pinion-type gear profile using computer vision

Shou-Bin Liu; Xing Ai

doi:10.1117/12.223981

Abstract

A new method of automatic measurement of a pinion type gear's profile using computer vision is provided and the measurement principle is analyzed. Based on a tool maker's microscope, a CCD camera, a real-time image sampling board, and a computer a vision system is established. Through calibration, edge detection, and detection of pinion gear center two kinds of modes, i.e., centering measurement and non-centering measurement of profile error, are realized by special software. A new operator is provided to find the edge of the binary digital image and the results of edge detection by the operator are presented. Block gauge method is used in system calibration and the results show that the system resolution will reach 3.28 micrometer/pixel (horizontal) and 1.60 micrometer/pixel (vertical) if the 5 (Chi) objective is used. The measurement results of an involute pinion type gear's profile error is also given in the paper.

Citation Download Citation

Shou-Bin Liu, Shou-Bin Liu, Xing Ai, Xing Ai, } "Automatic measurement of pinion-type gear profile using computer vision", Proc. SPIE 2597, Machine Vision Applications, Architectures, and Systems Integration IV, (3 October 1995); doi: 10.1117/12.223981; https://doi.org/10.1117/12.223981

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