US 11,883,973 B2
Cutting apparatus and contact position specifying program
Eiji Shamoto, Nagoya (JP); Hongjin Chung, Nagoya (JP); Takehiro Hayasaka, Nagoya (JP); and Seiji Hamada, Nagoya (JP)
Assigned to NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, Aichi (JP)
Filed by NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, Aichi (JP)
Filed on Mar. 23, 2020, as Appl. No. 16/826,803.
Application 16/826,803 is a continuation of application No. PCT/JP2019/007326, filed on Feb. 26, 2019.
Prior Publication US 2020/0269458 A1, Aug. 27, 2020
Int. Cl. B26D 5/00 (2006.01); G05B 19/401 (2006.01); G05B 19/408 (2006.01); B23Q 17/22 (2006.01)
CPC B26D 5/005 (2013.01) [B23Q 17/2233 (2013.01); G05B 19/401 (2013.01); G05B 19/4086 (2013.01)] 8 Claims
OG exemplary drawing
 
1. 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 a target object; and
a controller that is programmed to control rotation of the spindle by the rotation drive motor and relative movement of the cutting tool by the feed drive motor, wherein
the controller is programmed to have a capability of acquiring a coordinate value when the cutting tool is moved relative to an object having a known shape to bring a cutting edge of the cutting tool into contact with a portion having the known shape of the object using detection information of a contact sensor or time-series data of a detection value related to the rotation drive motor and/or the feed drive motor, and
the controller is programmed to obtain, based on coordinate values when the cutting edge of the cutting tool comes into contact with the portion having the known shape of the object at least at three positions, at least one of a nose radius of the cutting edge of the cutting tool, center coordinates of the cutting edge of the cutting tool, and an error in shape of the cutting edge of the cutting tool.