一、引言滚刀、丝锥一类的螺纹状刀具在刀刃处导程误差的测量是一种困难的精密测量。虽然已经研制出了此种测量的自动测量仪(参考1.2),但都是采用的接触式测头。接触式测头具有测头的磨损及难于测量小模数滚刀的问题,而且测量精度需要改进。作者已经研制出并在工业中采用了具有激光干涉仪 First, the introduction hob, tap a thread-like tool at the edge of the lead error measurement is a difficult and sophisticated measurement. Although automatic measuring instruments of this type have been developed (Ref. 1.2), they are all contact probes. Contact probe with the probe wear and difficult to measure the small modulus hob problem, and the measurement accuracy needs to be improved. The author has developed and adopted a laser interferometer in the industry