초록 ▼

A process for the continuous chipless separation of identical individual rings from tubular workpieces by using cutting rollers. In order to produce highly-accurate rings, preferably from antifriction bearing steel, the section of the tubular workpiece to be separated is completely encompassed by th

A process for the continuous chipless separation of identical individual rings from tubular workpieces by using cutting rollers. In order to produce highly-accurate rings, preferably from antifriction bearing steel, the section of the tubular workpiece to be separated is completely encompassed by the longitudinal contour of the cutting rollers and the faces of the rings are produced plane-parallel and vertical relative to the workpiece axis. What is essential is that prior to the cutting process the tubular workpiece is heated to a temperature that substantially lowers the deformation resistances of the material used.

대표청구항 ▼

[ I claim:] [1.] A process for continuously, chiplessly separating identical individual rings from a tubular workpiece, comprising the steps of:initially inductively heating the tubular workpiece to a temperature of at least 800.degree. C. that substantially lowers deformation resistance of the work

[ I claim:] [1.] A process for continuously, chiplessly separating identical individual rings from a tubular workpiece, comprising the steps of:initially inductively heating the tubular workpiece to a temperature of at least 800.degree. C. that substantially lowers deformation resistance of the workpiece material so that a higher temperature is produced on an outer surface of the workpiece than on an inner surface of the workpiece;driving three cutting rollers having thread-like cutting edges in a common direction;completely surrounding a section of the tubular piece to be separated with a longitudinal contour of the cutting rollers;pressing the cutting edges onto a surface of the workpiece and rolling the rollers on the workpiece surface, the cutting rollers being positioned so that cutting contact with the workpiece occurs on an exactly shared cutting plane without interruption of a contact line between the workpiece and the cutting rollers, the cutting rollers each having a diameter that increases from a first end to a second end of the roller so that a narrowing channel is formed by the rollers and so that the workpiece is subjected to high normal forces including axial forces on end faces and radial forces on a mantel surface of the workpiece so as to produce end faces on the rings that are plane-parallel and perpendicular to the work axis; andturning the workpiece during heating in an opposite direction to the cutting rollers and moving the workpiece axially from the first end to the second end of the rollers.