TOOL HOLDER ATTACHMENT STATE DETECTION METHOD, TOOL HOLDER ATTACHMENT STATE DETECTION DEVICE, DISPLACEMENT DETECTION METHOD, DISPLACEMENT DETECTION DEVICE, AND MACHINE TOOL

Abstract: in a tool holder attachment state detection method of the present invention, during setup, a tool holder is attached to a spindle without any chuck error, counting of the number of notches c formed in a flange portion b is started after the rotation of a tool is started, and a time t taken to obtain measurement data from the notch c detected last and a count n at that time are stored, and during machining, measurement data is obtained by making the count n and the time t correspond to each other by the same procedure as during setup. therefore, regardless of sensor types, the number of notches, shape accuracy, environment, and the like, this method easily and accurately matches the phases of measurement data during setup and machining, and improves the detection accuracy of chuck errors.

Inventor(s): Yuta FUKUOKA, Hiroki SEKINE

CPC Classification: B23Q17/003 (Arrangements for {observing,} indicating or measuring on machine tools (for automatic control or regulation of feed movement, cutting velocity or position of tool or work ))

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