| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device to measure both the tool diameter and the tool length in a tool passing passage in tool changing action without moving a first measuring sensor to measure the tool diameter and a second measuring sensor to measure distance to a designated measuring position. SOLUTION: A next tool T2 in a tool pot 3 and a used tool T1 on a main shaft are grasped by a tool changing arm 5 to be pulled downward from the tool pot 3 and the main shaft 2. In the middle of it, distance L1 between the designated measuring position 5c of the tool changing arm 5 and the second measuring sensor 10 at a lower position when a tip of the next tool T2 is detected by the first measuring sensor 9 sideways of it is measured. The tool changing arm 5 is further moved downward, and distance L2 between the designated measuring position 5c of the tool changing arm 5 and the second measuring sensor 10 when a reference diameter do of a shank Toc of a tool holder of the next tool T2 is detected by the first measuring sensor 9 is measured. The tool length L is determined based on the distance L1 and the distance L2.
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