US 11,702,818 B2
Motor grader cutting edge wear calibration and warning system
David A. Veasy, Dubuque, IA (US); Craig Christofferson, Dubuque, IA (US); Michael D. Peat, Dubuque, IA (US); Nathan J. Horstman, Dubuque, IA (US); and Joshua M. Schau, Dubuque, IA (US)
Assigned to DEERE & COMPANY, Moline, IL (US)
Filed by Deere & Company, Moline, IL (US)
Filed on May 15, 2019, as Appl. No. 16/413,259.
Prior Publication US 2020/0362542 A1, Nov. 19, 2020
Int. Cl. E02F 9/26 (2006.01); E02F 3/815 (2006.01); E02F 3/84 (2006.01); E02F 9/22 (2006.01)
CPC E02F 9/264 (2013.01) [E02F 3/815 (2013.01); E02F 3/844 (2013.01); E02F 9/226 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for measuring wear of a cutting edge of a blade of a work vehicle, comprising:
providing the work vehicle with one or more of a left saddle arm, a right saddle arm, a saddle pin, a circle side shift hydraulic actuator, a circle drive assembly, and a blade pitch hydraulic actuator;
measuring a calibration position measurement of the blade with the cutting edge attached thereto by measuring a calibration position of the one or more of the left saddle arm, right saddle arm, saddle pin, circle side shift hydraulic actuator, circle drive assembly, and blade pitch hydraulic actuator;
measuring a blade position measurement of the blade in a measurement position, after the calibration position measurement is measured, by measuring the position of the one or more of the left saddle arm, right saddle arm, saddle pin, circle side shift hydraulic actuator, circle drive assembly, and blade pitch hydraulic actuator being in the calibration position;
comparing the blade position measurement to the calibration position measurement;
determining a wear condition of the cutting edge of the blade based on the difference between the blade position measurement and the calibration position measurement;
determining the wear condition of the cutting edge is either acceptable wherein the cutting edge does not require replacement or unacceptable wherein the cutting edge does require replacement; and
wherein when the wear condition of the cutting edge is unacceptable, limiting movement of the blade to prevent the blade from performing a grading operation.