我厂車工王才忠同志在車制多头螺紋时,改进了一种簡便的分头法,效果很好。現将这方法介紹如下。我要車制螺距t=1.75,导程L=3×1.75=5.25,头数为三的多头螺紋,則可按如下的步驟进行加工: 1)先用t=1.75来配換齿輪,然后用刀尖在工件表面輕輕走一刀,吃刀不要太深(約0.05公厘),以能看清螺紋线为止。 My factory mechanic Wang Caizhong comrades in the system when the long thread, improved a simple method of division, the effect is very good. Now this method is as follows. I want the car pitch t = 1.75, the lead L = 3 × 1.75 = 5.25, the first three threads, then the following steps can be processed: 1) first with t = 1.75 to replace the gear, and then use The tip of the knife gently walk on the surface of the workpiece, eat the knife not too deep (about 0.05 mm), to be able to see the thread so far.