Patent ID: 7632172
Filing Date: 2009-12-15
Classification: B23F

Abstract:
1. A hard finishing machine for hard finishing of a workpiece which has a profile to be machined, comprising: a dressable grinding tool which is arranged on a tool spindle; a rotary table with a vertical axis of rotation; a workpiece spindle arranged on the rotary table for carrying the workpiece, wherein the rotary table has a first rotational position in which the workpiece can be machined by the tool, the rotary table has a second rotational position in which the workpiece can be taken from or loaded on the workpiece spindle at a first loading and unloading station, and the rotary table has a third rotational position, which is different from the second rotational position, in which the workpiece can be taken from or loaded on the workpiece spindle at a second loading and unloading station; and a dressing tool arranged on the rotary table at a circumferential position for engaging the grinding tool, the grinding tool being (i) a profile grinding wheel for grinding of a gear by profile grinding, or (ii) a single-threaded grinding worm for grinding of a gear by generative grinding, or (iii) a multiple-thread grinding worm for grinding of a gear by generative grinding.