TOOL REPLACEMENT METHOD AND DEVICE OF MACHINE TOOL

摘要

PROBLEM TO BE SOLVED: To shorten the time required for the restart of machining after the end of machining in tool replacement of a machine tool. SOLUTION: This machine tool includes: a tool magazine 22 storing tools 101, 10n; a spindle 11; a tool replacement device ATC20; an NC device 30A; and a machine control device 20A. The machine control device 20A previously computes the work standby range of a work where the work does not interfere with a tool on the basis of the data of the tools 100, 101 before and after replacement and data on a work 200 to be machined in the tool replacement operation, and informs the computed work standby range to the NC device 30A. The NC device 30A includes a control means 310 for retreating the work to the standby range when the work is not within the standby range in transmitting the information on the tool replacement. The machine control device 20A further includes a tool replacement operating means 211 for starting the tool replacement operation after the confirmation on that the work is retreated within the standby range. COPYRIGHT: (C)2006,JPO&NCIPI