METHOD FOR CROWN GEAR GRINDING BY GENERATION

摘要

Crown wheels (21) are ground on a grinding machine with the aid of a hobbing grinding disc (11) of ceramic material which is formed on the same grinding machine with the aid of a dressing crown wheel (13) with one or more teeth (14) provided with a dressing material such as diamond. The shape of said crown wheel tooth or teeth is in principle the same as the shape of the teeth of the crown wheel to be ground. The hobbing grinding disc (11) is mounted on the grinding wheel shaft (12) of the grinding machine both during its formation and during the grinding of the crown wheels, while the dressing crown wheel (13) or the crown wheel (21) to be ground is mounted on the workpiece holder (15) of the grinding machine. During the formation of the hobbing grinding disc (11) or the grinding of the crown wheels (21) the movements of the hobbing grinding disc relative to the tooth or teeth (14) of the dressing crown wheel (13) provided with a dressing material or the crown wheels (21) to be ground are in principle the same. The shape of the tooth or teeth (14) of the dressing crown wheel is consequently always transferred in the same way by means of the hobbing grinding disc to the teeth of the crown wheels to be ground. Crown wheels can be ground very accurately in this way.