Machine tool for performing e.g. sharpening process, on workpiece, has spindle pole and rotary table provided two drives respectively and one drive used for final editing process and another drive used for final finishing process

摘要

The tool has spindle poles and rotary tables, and each pole and table provided drives respectively, where one drive is used for final editing process and another drive i.e. non-contact torque motor drive, is used for final finishing process. The drives provide a rotational torque of about 100 Newton-meter. A switching unit switches the former drive into an idle position, and shifts-out a stator (12) from the torque motor drive over an orbit of the rotor. The drives are horizontal and/or vertically aligned along rotation axes (14). The drive is selected from one of a gear wheel drive, a belt drive, a worm drive or a twin pinion drive.