Patent ID: 7216571

Claim:
A process for steel cutting the rotational symmetrical surfaces of a rotating workpiece, said process comprising the steps of: shifting at least one cutter, obliquely arranged with respect to a rotational axis of the workpiece, in a feed motion along the rotating workpiece while in contact with the rotating workpiece, said feed motion having both an axial motion, and an independent tangential motion transverse with respect to the direction of the axis and taking place in a tangential plane of the rotation symmetrical surface wherein the tangential motion and the axial motion of the feed motion are independently controlled with respect to each other; and choosing the machining parameters, including the feed taking place in the direction of the feed motion and the oblique positioning α of the cutter with respect to the longitudinal direction (Z) of the rotation axis, so that the twist appearing on the machined surface becomes minimal with respect to the twist pitch (s) and/or the twist depth (t).