What is the reason why the lathe polished rod doesn't work?

Of course, there is also a smooth rotation and a slow knife. The failure of the express train is caused by poor contact of the electric control switch. Most of the switches are broken, and the motor is rarely broken. The motor won't turn until the circuit is blocked. The four-way slow-moving knife does not need electric control and is driven by a polished rod.

Lathe is a machine tool that mainly turns rotating workpieces with turning tools. On the lathe, you can also use drills, reamers, taps, dies and knurling tools for corresponding processing. The main components are: spindle box, exchange gear box, feed box, slide box, tool rest, tailstock, polished rod, lead screw, bed, bed foot and cooling device.