在零件加工中,常常碰到多头螺旋零件。如叶轮、多头蜗杆、多头螺纹等,有时其导程达100毫米以上。要采用移动小刀架的方法进行分头,实际上已不可能。而采用丝杠分头车削法,则可以十分方便地获得与车床丝杠精度等级相当的分头精度。其生产效率也比采用专用夹具分头为高。丝杠分头法的原理实质上是移动小刀架进给分头的引伸。其简单过程是:在车床停止转动时,使开合螺母与丝杠脱开,并将大拖板移动一个工件 In the parts processing, often encounter long spiral parts. Such as impeller, long worm, long thread, etc., and sometimes its lead up to 100 mm or more. To move the knife holder method of division, in fact, impossible. The use of lead screw turning method, you can very easily access and lathe screw precision level of precision. Its production efficiency is also higher than the use of special fixture. The principle of screw-driven method is essentially the extension of the moving knife holder feed split. The simple process is: When the lathe stops turning, the opening and closing nut and screw off, and move the pallet a workpiece