Aiming at the technological requirements of tractor wheel hub threading the electrical and hydraulic control parts for tapping unit combination machine tool were designed .

针对拖拉机轮毂的 攻丝工艺的要求，设计了组合攻丝 机床的电气与液压控制部分。

Double Spiral Fluting Tap a New Type Threading Tool

一种新型的 螺纹 工具&双螺旋槽丝锥

Revamping of CNC System for Oil Pipe End Threading Machine Tool

石油管 加工 数控系统改造

Method : A set of special instruments was designed a threading tool can make a threaded Cylindrical bone from the iliac crest .

方法：设计了一套特殊器械，从髂骨上取出圆柱状骨块并用 螺纹 成形器制成螺纹柱状骨块。