Numerical control automatic lathe and method of machining a workpiece by this numerical control automatic lathe

摘要

PROBLEM TO BE SOLVED: To provide a numerically controlled automatic lathe which is applicable to various composite machining and which is of simple construction, and a method of machining a workpiece by the lathe. ;SOLUTION: In a numerically controlled automatic lathe which is provided with a main spindle 21, a headstock 2, tool rests 3, 4 for holding tools T for machining a workpiece W held by a guide bush 22 for supporting the tip of the workpiece W and the main spindle 21, a driving device for moving the tool rests 3, 4 in relation to the workpiece held by the main spindle, and a numerical control device for controlling the driving of the driving device, the two comb-teeth tool rests 3, 4 for holding the tools T which are arranged rectilinearly in the direction crossing the axis of the main spindle 21, and either one of the comb-teeth type tool rests 3, 4 can be moved in the same direction as the axis of the main spindle by driving the driving device by orders from the numerical control device.;COPYRIGHT: (C)2001,JPO