US Patent Issued to Okuma on April 21 for "Method for calculating compensation parameter of motion error in machine tool, and machine tool" (Japanese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,443, issued on April 21, was assigned to Okuma Corp. (Niwa-Gun, Japan).

"Method for calculating compensation parameter of motion error in machine tool, and machine tool" was invented by Yasunori Kondo (Niwa-Gun, Japan), Tetsuya Matsushita (Niwa-Gun, Japan) and Takuya Kojima (Niwa-Gun, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes: installing a square calibration master on a table, and measuring each of measurement surfaces A, B, and C of the square calibration master by a position measurement sensor attached to a main spindle; calculating a first squareness between the measurement surfaces A and B; calculating a second squa...