Project Description

內(nèi)齒形狀產(chǎn)生螺旋線條配合軸，作用于滑動(dòng)用或轉(zhuǎn)螺紋機(jī)構(gòu)零件用之特殊拉刀。

The internal gears shape is helical compare with the shaft, usually used to helical transmission system.