Tooth error vision measurement method for involute of straight toothed spur gear

Abstract

The invention relates to a tooth error vision measurement method for the involute of a straight toothed spur gear. According to the method, an involute tooth error measurement model is established based on a linear laser vision imaging system. In combination with the light stripe centric line detection technique, the corner point detection technique, the camera calibration technique and the like, the measurement of a to-be-measured object is realized. The method comprises the steps of 1) calibrating a vision imaging model under the effect of laser active illumination; 2) calibrating the parameters of a pseudo light plane equation; 3) calculating the three-dimensional coordinates of a to-be-measured point on the surface of a tooth profile; 4) calculating the tooth error for the involute of the surface of the tooth profile. According to the method, based on the vision measurement technique, the online non-contact detection is implemented. Meanwhile, based on the precise laser active illumination technique, the high measurement accuracy is ensured. The measurement accuracy of the method for gears of IT 6-8 level in accuracy is smaller than or equal to 0.015 mm.

Description

technical field [0001] The invention relates to the field of laser measurement, in particular to a visual measurement method for involute tooth profile errors of spur gears. Background technique [0002] In recent years, the manufacturing industry represented by the automobile industry has developed rapidly in our country. As an important part of the transmission system in the manufacturing industry, the manufacturing technology of gears has also been greatly improved. One of the overall development strategies of my country's manufacturing industry is to develop China into a global industrial gear manufacturing and supply base, which has also been recognized by most domestic gear manufacturers. The recovery of the equipment manufacturing industry, the rise of aerospace supply, the rapid development of the IT industry and the prosperity of the shipbuilding industry have put forward higher requirements for the gear manufacturing industry, but also provided unprecedented oppor...

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide an online measurement method of camshaft diameter size based on laser vision imaging system, which overcomes the shortcomings of existing non-contact detection methods and ensures lower hardware costs, higher detection efficiency and better measurement accuracy

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