US 12,259,710 B2
Control method for a scraping machine based on correlation between machining force and displacement
Yosuke Takahashi, Fuchu (JP); and Tadashi Mitsuhashi, Tokorozawa (JP)
Assigned to CITIZEN WATCH CO., LTD., Nishitokyo (JP)
Appl. No. 17/597,700
Filed by CITIZEN WATCH CO., LTD., Nishitokyo (JP)
PCT Filed Jul. 15, 2020, PCT No. PCT/JP2020/027559
§ 371(c)(1), (2) Date Jan. 19, 2022,
PCT Pub. No. WO2021/015075, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 2019-136423 (JP), filed on Jul. 24, 2019.
Prior Publication US 2022/0276635 A1, Sep. 1, 2022
Int. Cl. G05B 19/4155 (2006.01); B26D 3/08 (2006.01)
CPC G05B 19/4155 (2013.01) [B26D 3/085 (2013.01); G05B 2219/35519 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A control method for a machining device that includes a scraper driven by a driver for scraping a workpiece, the control method comprising:
a determination step for determining whether or not the workpiece is properly cut by the scraper;
a storing step for storing, in a storage, a correlation between a displacement and a machining force of the scraper upon determining the workpiece to be properly cut by the scraper in the determination step;
a first acquisition step for acquiring information relating to displacement of the scraper;
a second acquisition step for acquiring information relating to machining force of the scraper with respect to the workpiece;
a control step for controlling an operation of the driver, so that the correlation between the displacement of the scraper acquired in the first acquisition step and the machining force of the scraper acquired in the second acquisition step is matched with the correlation stored in the storage, and
the correlation between the displacement and the machining force of the scraper is obtained based on a correlation between a displacement of the scraper and time upon the workpiece determined in the determination step to be properly cut by the scraper, and a correlation between a machining force of the scraper and time upon the workpiece determined in the determination step to be properly cut by the scraper.