The lead screw is a long, carefully

导螺杆是一根细长的细螺纹轴，位于从主轴箱到尾座的床底下方并与之平行。它与主轴箱配合使用，其旋转方向可能相反。它安装在滑架组件上，在切割过程中可能会与滑架啮合或从滑架上松开。导螺杆用于切割螺纹，不使用时可松开以保持其精度。导螺杆下方是一个进给杆，该进给杆从快换盒传递动力以驱动停机坪机构进行横向和纵向供电。改变丝杠或进给杆的速度是在位于车床主轴箱端的速换齿轮箱上进行的。

The lead screw is a long, carefully threaded shaft located slightly below and parallel lo the bed ways extending from the headstock to the tailstock. It is geared to the headstock and its rotation may be reversed; it is fitted to the carriage assembly and may be engaged or released from the carriage during cutting operations. 'The lead screw is for cutting threads and disengaged when not in use to preserve its accuracy. Below the lead screw is a feed rod, which transmits power from the quick change box to drive the apron mechanism for cross and longitudinal power feed. Changing the speed of the lead screw or feed rod is done at the quick change gear box located at the headstock end of the lathe.

The lead screw is a long, carefully threaded shaft located slightly below and parallel lo the bed ways extending from the headstock to the tailstock. It is geared to the headstock and its rotation may be reversed; it is fitted to the carriage assembly and may be engaged or released from the carriage during cutting operations. 'The lead screw is for cutting threads and disengaged when not in use to preserve its accuracy. Below the lead screw is a feed rod, which transmits power from the quick change box to drive the apron mechanism for cross and longitudinal power feed. Changing the speed of the lead screw or feed rod is done at the quick change gear box located at the headstock end of the lathe.<br>