US 11,833,632 B2
Method and apparatus for maintaining a surface speed of a circular cutting device
Sarah Marie Beranek, Glenview, IL (US); John Edward Bussan, Buffalo Grove, IL (US); Douglas A. Ceckowski, Gurnee, IL (US); Christian Chkaiban, Glenview, IL (US); Chelsea B. Frid, Chicago, IL (US); Jeffrey E. Joray, Lake Villa, IL (US); Michael E. Keeble, Libertyville, IL (US); Bryan J. Kordus, Mount Pleasant, WI (US); and Michael Shtilman, Buffalo Grove, IL (US)
Assigned to Illinois Tool Works Inc., Glenview, IL (US)
Filed by Illinois Tool Works Inc., Glenview, IL (US)
Filed on Jul. 16, 2019, as Appl. No. 16/512,655.
Claims priority of provisional application 62/699,809, filed on Jul. 18, 2018.
Prior Publication US 2020/0023483 A1, Jan. 23, 2020
Int. Cl. B23Q 15/10 (2006.01); G05B 19/416 (2006.01); B26D 1/00 (2006.01); G01B 11/10 (2006.01); B23Q 15/16 (2006.01)
CPC B23Q 15/10 (2013.01) [B23Q 15/16 (2013.01); B26D 1/0006 (2013.01); G01B 11/10 (2013.01); G05B 19/416 (2013.01); B26D 2001/0046 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a rotational velocity of a cutting device, comprising:
determining a present diameter of a cutting wheel of the cutting device; and
adjusting a rotational velocity of the cutting wheel based on the present diameter to have a surface speed of the cutting wheel at substantially a pre-determined constant surface speed,
wherein determining the present diameter comprises determining an amount of power used to maintain a present rotational velocity, and
wherein the power is electric power and wherein the determining the present diameter comprises determining a distance from a sensor to at least one of a surface of an item being cut by the cutting wheel and a member supporting the item, and the distance is used to determine the present diameter of the cutting wheel.