US Patent Issued to National Yang Ming Chiao Tung University on Feb. 4 for "Ballbar testing tune-up method for machine tool" (Taiwanese Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,216,446, issued on Feb. 4, was assigned to National Yang Ming Chiao Tung University (Hsinchu, Taiwan).

"Ballbar testing tune-up method for machine tool" was invented by Ching-Hung Lee (Hsinchu, Taiwan) and Shun-Fu Wu (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ballbar testing tune-up method for machine tool includes the steps of letting a machine tool system execute a ballbar test; obtaining a phase characteristic and a peak-value characteristic; creating a Lagrange interpolation polynomial and inputting a servo controller parameter, a phase characteristic and a peak-value characteristic of the machine tool system each time when exe...