ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,769,276, issued on Oct. 20, was assigned to FANUC Corp. (Yamanashi, Japan).
"Rapid motion tapping method" was invented by Hsien-Chung Lin (Fremont, Calif.), Zheng Tong (Yamanashi, Japan) and Tetsuaki Kato (Fremont, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for machine tool motion control which determines a time-optimal motion plan for a hole tapping step preceded by an air cut step. The motion plan for the air cut step is computed so that the tapping tool arrives at the top of the hole to be tapped with the proper axial tapping feed speed and the proper tapping rotational velocity. First, time durations for the air cut step are comp...