Rolling method and two-roll profile rolling machine for manufacturing cylindrical worm profiles

摘要

The magnitude of the rolling force applied to the workpiece (1) by rolling tools (9, 10), at least during an initial plunge phase, is controlled dependent on the difference of the contact lengths between the workpiece and respectively the rolling tools (9) and (10). As a result, the workpiece is periodically subjected to a rolling force in such a way that the maximum and minimum of this force correspond to the zero and maximum difference of the contact lengths. The profile rolling machine is provided with at least one sensor (8, 16) for determining the angle of rotation of the rolling tools and hence their contact length difference. Signals from this sensor are fed to a control unit governing the rolling spindle drive.