Turning screw spindle synchronization must be achieved to run functions, namely, the need for turning threadedspindle pulse generator.
车削螺纹必须通过主轴的同步运行功能而实现，即车削螺纹需要有主轴脉冲发生器。
2
The invention discloses a mechanical eccentering arm with eight arms including a motor, a clutch, a roller threadedspindle, drive parts and an eccentering arm;
本发明公开了一种八臂机械推靠器，包括：电动机、离合器、滚柱丝杠、 传动部件、推靠臂；
3
A needle valve with a threadedspindle is unscrewed to open a passage for the liquid to escape to the reservoir from the cylinder when the jack is required to be lowered.