我厂在机床修理过程中,往往遇到多头蜗杆和多头丝杆的加工,如铣床、镗床和刨床的丝杠都是两个头的,C620车床起落蜗杆是四个头的多头螺纹,在加工多头螺纹时,过去都是一个头一个头的加工,车完一个头以后,就需 I plant in the repair process, often encounter long worm and multiple screw processing, such as milling machine, boring machine and planer screw are two heads, C620 lathe landing worm is a four-head multi-head thread, the processing of long thread When the past is a head of the first processing, the car finished a head, you need