Generally , existing NC instructions , for example G32 , G92 , G76 etc , are limited in machining threads with forming cutter , which can not be used to turning nonstandard threads .
异型螺纹的加工就是其中典型的代表。G32、G92、G76等指令仅限于用成型刀加工螺纹，不能满足异型螺纹的车削。
G76