| 摘要 |
PROBLEM TO BE SOLVED: To provide a machine tool preventing useless consumption of cleaning liquid. SOLUTION: In the machine tool 1 including: a spindle head 6; a Z-axis moving device 5; an automatic tool changer 2 having a tool magazine 8 equipped with tool holding parts 38A holding tool holders 75 in a plurality of locations in the circumferential direction and a magazine motor 46 and capable of exchanging the tool holders 75 between the main spindle head 6 and the tool holding parts 38A; cleaning nozzles 81 ejecting the cleaning liquid cleaning the tool holder 75B newly mounted on the main spindle head 6 in exchanging the tool; and a cleaning liquid circuit 82, a step calculating the moving amount of the tool magazine 8 in exchanging the tool according to the circumferential location in the tool magazine 8 of the tool holder 75B newly mounted on the main spindle head 6 (step S25) and a step determining the starting timing of ejection of the cleaning liquid to the cleaning nozzles 81 by the cleaning liquid circuit 82 based on the calculated moving amount (step S30) are taken, and supply of the cleaning liquid is started at the ejection starting time. COPYRIGHT: (C)2011,JPO&INPIT
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