Numerically-controlled lathe workpiece machining device and machining method thereof

The invention belongs to the technical field of numerically-controlled lathes, and particularly relates to a numerically-controlled lathe workpiece machining device and a machining method thereof. Thedevice comprises a spindle chuck and a moving table. The moving table is provided with a feeding mechanism, a discharging mechanism, an ejecting mechanism and a turning mechanism. The feeding mechanism comprises a loading frame. The loading frame is provided with a discharging groove, and workpieces are stacked in the discharging groove. The moving table drives the feeding mechanism to be close to the spindle chuck, and the spindle chuck clamps the workpieces. Then the moving table drives the ejecting mechanism to be close to the workpieces on the spindle chuck and pushes the workpieces intothe spindle chuck. The spindle chuck fixedly clamps the workpieces. Then the moving table drives the turning mechanism to be close to the workpieces clamped on the spindle chuck. Under driving of themoving table, turning machi