Abstract
The linear motor drive machining center HVM (High Velocity Machine) has been developed to target customers mass producing automobile parts and those machining aluminum airplane parts. Already, over 100 machines are installed and in operation in major automobile and airplane manufacturers in Europe and in the United States. MORI SEIKI combined the experience and knowledge of designing and assembling linear motors made available through technical cooperation with THE INGERSOLL MILLING MACHINE COMPANY, with the latest mechanical technology developed by MORI SEIKI to develop a full-scale linear motor drive machining center, HVM630,with increased accuracy, productivity, and reliability. By discontinuing the use of the ball screw, ball nut, ball screw support bearing, and couplings, and other parts that distort in the feed direction to raise the servo loop gain, we were able to achieve a circular machining accuracy of 1.8μm (F=2,000 mm/min, R=15 mm, peak to valley).
