Patent ID: 11883973
Assignee: NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 2:
3. A cutting apparatus comprising:
a rotation drive motor that rotates a spindle to which a cutting tool or to-be-cut object is attached;
a feed drive motor that moves the cutting tool relative to the to-be-cut object;
a controller; and
a storage medium storing a program, wherein
when the program is executed, the program causes the controller to be configured to:
specify a contact position between the cutting tool and the to-be-cut object from time-series data of a detection value related to the rotation drive motor and/or the feed drive motor, and
derive a contact timing before the detection value reaches a predetermined threshold, specify the contact position from the contact timing derived, based on first time-series data of a detection value acquired before contact, and change in second time-series data of a detection value acquired after contact, the second time-series data containing a detection value greater than & the predetermined threshold.