Numerically controlled machine tool and method

摘要

A numerically controlled machine tool for machining a workpiece in accordance with a machining program as a checking mode and is operative to execute a plurality of commands including commands for controlling the movement of the tool. It comprises specifying means for specifying travel of the tool and means for stopping the movement of the tool after the tool has moved by said specified travel on a tool locus specified in the machining program. Moreover, means are provided for moving the tool by said specified travel on the locus of the machining program during the checking mode in order to perform a check. <IMAGE>