在车床上车双头螺纹的方法较多,但都比较麻烦。利用 C620-1床头变速箱分头车双头螺纹,既简单,又方便,分头精度准确,辅助时间减少,特别适用单件加工。分头操作步骤:先按螺纹导程车好一个头后,停车,打开床头箱上盖(见图),利用主轴4上的齿轮式离合器8(内直齿 Z=50)与主轴上的快慢 There are many ways to get a double thread on the lathe, but they are both troublesome. Using C620-1 head gearbox split car double-headed thread, both simple and convenient, accurate and accurate sub-precision, auxiliary time to reduce, especially for single-piece processing. Step by step: first thread guide car after a good head, parking, open the bedside head cover (see photo), the use of the gear 4 on the spindle clutch 8 (internal teeth Z = 50) and the spindle speed