Method of forming wheel disks

Claim 1

THE METHOD OF MAKING AXIAL SHAPED TAPERED WHEEL DISK FROM RADIAL PLANE ANNULAR SHEET STEEL BLANKS COMPRISING THE STEPS OF: CUTTING A CIRCULAR BLANK FROM A PLATE OR SHEET OF STEEL OF SUBSTANTIALLY UNIFORM THICKNESS, CUTTING A MANDREL APERTURE IN THE CENTER OF SAID BLANK, MOUNTING SAID BLANK BETWEEN THE HEADSTOCK AND TAILSTOCK OF A CONTOUR SPINNING MACHINE HAVING A MANDREL SHAPED TO THE INNER SURFACE CONTOUR OF A WHEEL DISK TO BE FORMED, SAID MANDREL HAVING AN AXIAL PORTION WITH A CONE ANGLE OF APPROXIMATELY ZERO DEGREES, POSITIONING A LEADING ROLL HAVING A CONTACT FACE HAVING A RADIUS OF CURVATURE FOR CONTACTING A SURFACE OF SAID BLANK AND BEING UNDER CONTROL OF A TEMPLATE HAVING A CONTOUR SHAPED TO THE OUTER SURFACE CONTOUR OF A THEORETICAL DISK TO BE FORMED BETWEEN SAID MANDREL AND SAID LEADING ROLL, TO BE TIONING A TRAILING ROLL HAVING A CONTACT FACE HAVING A RADIUS OF CURVATURE SMALLER THAN SAID RADIUS OF CURVATURE OF SAID LEADING ROLL AND BEING UNDER CONTROL OF A TEMPLATE HAVING A CONTOUR SHAPED TO THE ACTUAL OUTER SURFACE CONTOUR OF A DISK TO BE FORMED BY SAID ROLLS, MAINTAINING SAID TRAILING ROLL BEHIND SAID LEADING ROLL UNDER TEMPLATE CONTROL, MAINTAINING SAID TRAILING ROLL CLOSER TO THE AXIS TO ROTATION OF SAID MANDREL THAN SAID LEADING ROLL UNDER TEMPLATE CONTROL, AND POWER ROLL FORMING BY THE ACTION OF BOTH SAID ROLLS FOR REDUCING THE THICKNESS AND SHAPED OF SAID DISK FROM A RADIAL PLANE ANNULAR BLANK TO AN AXIAL SHAPED TAPERED DISK HAVING AN AXIAL PORTION THEREON SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID MANDREL.

Claim 2

THE METHOD OF MAKING AXIAL SHAPED TAPERED WHEEL DISK FROM RADIAL PLANE ANNULAR SHEET STEEL BLANKS COMPRISING THE STEPS OF: CUTTING A CIRCULAR BLANK FROM A PLATE OR SHEET OF STEEL OF SUBSTANTIALLY UNIFORM THICKNESS, CUTTING A MANDREL APERTURE IN THE CENTER OF SAID BLANK, MOUNTING SAID BLANK BETWEEN THE HEADSTOCK AND TAILSTOCK OF A CONTOUR SPINNING MACHINE HAVING A MANDREL SHAPED TO THE INNER SURFACE CONTOUR OF A WHEEL DISK TO BE FORMED, SAID MANDREL HAVING AN AXIAL PORTION WITH A CONE ANGLE OF APPROXIMATELY ZERO DEGREES, POSITIONING A LEADING ROLL HAVING A CONTACT FACE HAVING A RADIUS OF CURVATURE FOR CONTACTING A SURFACE OF SAID BLANK AND BEING UNDER CONTROL OF A TEMPLATE HAVING A CONTOUR SHAPED TO THE OUTER SURFACE CONTOUR OF A THEORETICAL DISK TO BE FORMED BETWEEN SAID MANDREL AND SAID LEADING ROLL, TO BE TIONING A TRAILING ROLL HAVING A CONTACT FACE HAVING A RADIUS OF CURVATURE SMALLER THAN SAID RADIUS OF CURVATURE OF SAID LEADING ROLL AND BEING UNDER CONTROL OF A TEMPLATE HAVING A CONTOUR SHAPED TO THE ACTUAL OUTER SURFACE CONTOUR OF A DISK TO BE FORMED BY SAID ROLLS, MAINTAINING SAID TRAILING ROLL BEHIND SAID LEADING ROLL UNDER TEMPLATE CONTROL, MAINTAINING SAID TRAILING ROLL CLOSER TO THE AXIS TO ROTATION OF SAID MANDREL THAN SAID LEADING ROLL UNDER TEMPLATE CONTROL, AND POWER ROLL FORMING BY THE ACTION OF BOTH SAID ROLLS FOR REDUCING THE THICKNESS AND SHAPED OF SAID DISK FROM A RADIAL PLANE ANNULAR BLANK TO AN AXIAL SHAPED TAPERED DISK HAVING AN AXIAL PORTION THEREON SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID MANDREL.