NUMERIC CONTROLLER

PROBLEM TO BE SOLVED: To prevent the occurrence of mechanical vibration and the like in movement according to the mechanical coordinate. SOLUTION: When a code for mechanical coordinate setting is described for exchange of a tool and the like on a read block (S2), a designation method for a feeding speed set by a parameter is determined (S3). If it is determined to be a parameter setting method, a quick feeding speed specific to the mechanical coordinate system or a feeding speed based on another parameter setting is selected to be used as a feeding speed F (S4-S6). If it is determined to be a program designation method, a speed designated by a program is used as the feeding speed F (S7). If it is determined to be a designation method by an input signal, an input signal is converted into a speed to be used as the feeding speed F (S8). A movement instruction based on the mechanical coordinate is executed at the set feeding speed F (S9). Since the movement instruction based on the mechanical coordinate can be carried out at an optional set speed, the occurrence of vibration and the like due to movement at high speed can be prevented, and no vibration is generated even if one system is moved by the mechanical coordinate while cutting processing is carried out in another system by a multi-system control machine tool. Consequently, deterioration in cutting processing precision can be prevented. COPYRIGHT: (C)2006,JPO&NCIPI