US 11,745,310 B1
Systems and methods for improving jet cutting performance via force sensing
Charles D. Burnham, Southbury, CT (US); and Mohamed A. Hashish, Bellevue, WA (US)
Assigned to Flow International Corporation, Kent, WA (US)
Filed by Flow International Corporation, Kent, WA (US)
Filed on Aug. 2, 2022, as Appl. No. 17/816,977.
Application 17/816,977 is a division of application No. 16/295,976, filed on Mar. 7, 2019, granted, now 11,433,504.
Application 16/295,976 is a division of application No. 15/277,891, filed on Sep. 27, 2016, granted, now 10,252,400, issued on Apr. 9, 2019.
Claims priority of provisional application 62/234,499, filed on Sep. 29, 2015.
Int. Cl. B24C 1/04 (2006.01); B24C 7/00 (2006.01); B24C 3/32 (2006.01)
CPC B24C 7/0015 (2013.01) [B24C 1/045 (2013.01); B24C 3/32 (2013.01); B24C 7/0023 (2013.01); B24C 7/0061 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of establishing a working speed, the method comprising:
forming a plurality of cuts in a coupon using a fluid jet system, each of the plurality of cuts being formed while moving at least one of a cutting head of the fluid jet system and the coupon relative to the other of the cutting head and the coupon at a different speed;
while forming the plurality of cuts in the coupon, measuring a corresponding history of reactive forces imparted by the fluid jet system to the coupon for each of the plurality of cuts;
computing an average or typical reactive force for each corresponding history of reactive forces;
designating a first speed corresponding to an average or typical reactive force approximating a threshold allowable force as an optimal speed;
designating a second speed corresponding to the optimal speed reduced by an offset percentage as an initial working speed; and
forming one or more cuts in a workpiece remote from the coupon using the cutting head of the fluid jet system while moving at least one of the cutting head and the workpiece relative to the other of the cutting head and the workpiece at the initial working speed.