Patent ID: 6047581
Filing Date: 2000-04-11
Classification: B21H

Abstract:
A spline-forming machine of the type in which spline-forming racks are simultaneously reciprocated across a rotatable workpiece, comprising:a pair of vertical slide bases on which the spline-forming racks are slidingly mounted by slides to reciprocate up and down across a workpiece rotating on an axis extending between the vertical slide bases;an electric motor drive associated with each vertical slide base for reciprocating the slide on that slide base, the electric motor drive comprising a motor mounted on an upper end of the slide base in longitudinal alignment therewith and a roller screw shaft, the roller screw shaft coupled to the motor at an upper end and connected at a lower end to the slide such that the rotation of the roller screw shaft is translated into up and down motion of the slide on the slide base, and the motor drive on each slide base being structurally independent of the motor drive on the other slide base.