我厂过去检查齿轮滚刀螺旋沟导程,是用万能显微镜加分度头和光学灵敏杠杆接触测量的。这样测量速度较慢,而且计算相当费时间,但由于以前刀具数量较少,万能显微镜的工作量也不大,在这种情况下,还能勉强的应付过去。但自去年大跃进以来,齿轮生产有了新的发展,当然齿轮刀具的生产也随着需要而猛增了好几倍。其他工作也有了发展,所以万 In the past, our factory inspected the helical groove guide of the gear hob, which was measured with universal microscope plus indexing head and optical sensitive lever touch. Such measurements are slow and computationally time-consuming, but due to the small number of tools used before, universal microscopes do not require too much work, and in this case they barely cope with the past. However, since the Great Leap Forward last year, there has been a new development in gear production, and of course the production of gear cutters soared as much as needed. Other work has also taken a turn for the better so that