摘要：This paper briefly introduced the working principle of non-contact measurement system of gear chamfering based on computer vision technology and laser range-finding technology. Then the circle center positioning method during the process of the first-stage positioning measurement of measurement system was studied, and the influence of circle center positioning error on the precision of starting point for measurement was analyzed. The standard circle with a cross and a radius of 20mm was used for the measurement experiment, as well as the precision error rule of fitting circle center positioning and influence relationship of the starting point error of measurement were studied. Thus a kind of effective method to improve the measurement precision was put forward.
