精密的圆周角度测量是一种困难的工作,如光学分度头的校对,在不拆卸机床任何零件下测量滚齿机内分度蜗轮的周节和累积误差,以及加工一些原始分度工具的检查(如原始蜗轮加工时和分度盘加工时的测定)等。这里介绍一种新的极其精密的测量方法。 今将用经纬仪作精密圆周角度测量,以 Precise circumferential angle measurement is a difficult task, such as proofreading of an optical indexing head, measuring the pitch and cumulative errors of indexing worm gears in a hobbing machine without disassembling any part of the machine, and checking some of the original indexing tools Such as the original worm gear processing and sub-dial processing of the determination) and so on. Here’s a new, extremely sophisticated measurement method. We will use theodolite for precise circumferential angle measurement