“运丝轮”是数控线切割机床的关键件,又是易损件,需时常更换,而每次更换“运丝轮”都需要到生产厂求援,影响生产。为了解决“运丝轮”V型槽的加工,我们分析了车床切削运动的原理:即工件作匀速、连续地旋转运动,刀具(指刀尖)做相应地直线运动,完成迴转面的加工。根据这个原理,我们在线切割机床上,自制了一个带驱动的小型胎具,解决了“运丝轮”V型槽的加工问题。采用φ0.08毫米的钼丝进行多次试验,并对所加工的工件用投 “Winding wheel” is the key part of NC WEDM, it is also a wearing parts, need to be changed from time to time, and each time you change the “Winding wheel” to the production plant for help, affecting production. In order to solve the processing of “V-groove”, we analyzed the principle of lathe cutting motion: that is, the workpiece rotates at a constant speed and continuously, and the cutter (finger tip) moves linearly accordingly to complete the machining of the turning surface . According to this principle, we made an on-line cutting machine and made a small-size belt-driven tire tool to solve the problem of processing “V-groove” of “wire wheel”. Using 0.08 mm molybdenum wire for multiple tests, and cast the workpiece used