近年来,随着大功率高速机械的发展,大齿轮测量的重要性更引起人们的重视。大齿轮测量按仪器结构划分,大致有二类:座式齿轮测量机和上置式或旁置式测量仪器。对于特大齿轮或中等规格一般精度大齿轮的测量,上置式测量仪器是一个发展方向。本文介绍的是加拿大拉伐尔大学机械系教授G·Bullon、G·Tordion及计量师G·Trembley的专刊,1982年由我们改进研制成的上置式大齿轮测量仪。该改型仪器结构简单,性能更为可靠,精度较高。 In recent years, with the development of high-power and high-speed machinery, the importance of measuring large gears has drawn more attention. Large gear measurement by the structure of the instrument, roughly two categories: seat gear measuring machine and on-set or by-pass measuring instruments. For the large gear or medium-sized general accuracy of large gear measurement, on-set measuring instrument is a development direction. This article presents a special edition of G Bullon, G Tordion and G Trembley, a professor of the Department of Mechanical Engineering at Laval University in Canada. The modified instrument has the advantages of simple structure, more reliable performance and higher accuracy.