Method and apparatus for rolling rings

Claim 1

AN APPARATUS FOR MANUFACTURING RINGS, ESPECIALLY FOR OUTER AND INNER BEARING RACES, COMPRISING A PAIR OF MAIN ROLLERS THE AXES OF WHICH ARE INCLINED TO EACH OTHER, SAID ROLLERS BEING DISPOSED SYMMETRICALLY WITH RESPECT TO EACH OTHER WITH SAID ROLLERS BUTTED TOGETHER AT THE LOWER PORTIONS THEREOF, EACH OF SAID ROLLERS HAVING AT LEAST TWO SMOOTH CONVERGING SURFACES, ONE OF SAID SURFACES ON EACH ROLLER BEING ADAPTED TO ROLL THE LATERAL SIDE OF THE RING MATERIAL AND BEING SPACED FROM AND OPPOSED TO THE CORRESPONDING SURFACE ON THE OTHER ROLLER, AND THE OTHER SURFACE ON EACH ROLLER BEING ADAPTED TO ROLL THE PERIPHERAL SIDE OF SAID MATERIAL AND BEING CONTIGUOUS WITH THE CORRESPONDING SURFACE ON THE OTHER ROLLER, THE CROSS SECTIONAL SHAPE OF SAID SURFACES TAKEN IN A PLANE THROUGH THE AXIS OF THE RING BEING ROLLED TOGETHER CONFORMING TO THE CROSS SECTIONAL SHAPE OF THE FINISHED OUTER AND LATERAL SURFACES OF THE RING, AND BEING CAPABLE, IN OPERATION, OF ROLLING SAID SURFACES AT THE SAME TIME IN ONE OPERATION, AN INNER ROLLER POSITIONED BELOW THE BUTTING PORTIONS OF SAID MAIN ROLLERS AND HAVING A CROSS SECTIONAL SHAPE AT THE PERIPHERY THEREOF CORRESPONDING TO THE CROSS SECTIONAL SHAPE OF THE INNER PERIPHERAL SURFACE OF THE RING BEING ROLLED, AND A PLURALITY OF SUPPORTING ROLLERS SPACED AROUND THE PERIPHERY OF THE SPACE IN WHICH THE RING IS TO BE ROLLED IN SUCH A MANNER THAT EACH OF THE ROLLERS COMES INTO CONTACT WITH THE OUTER PERIPHERY OF THE RING WHEN THE RING HAS BEEN ROLLED TO EXPAND ITS OUTER DIAMETER TO ITS FINISHED SIZE AND EXPANDS ITS CROSS SECTIONAL SIZE INWARDLY, THE OUTER DIAMETER AND PERIPHERY OF THE FINISHED RING BEING DETERMINED BY SAID SUPPORTING ROLLES, SAID SUPPORTING ROLLERS BEING ARRANGED AT SMALL DISTANCES FROM EACH OTHER, WHICH DISTANCES ARE SMALL RELATIVE TO THE THICKNESS OF THE RING BEING ROLLED SO AS TO ELIMINATE THE TENDENCY OF THE RING BEING ROLLED TO BULGE OR OTHERWISE BE DEFORMED BY FORCES ACTING IN THE RADIAL DIRECTION, A COMMON MOUNTING ON WHICH SAID INNER ROLLER AND SUPPORTING ROLLERS ARE MOUNTED, AND MEANS COUPLED TO SAID MOUNTING FOR APPLYING PRESSURE TO SAID MOUNTING AND MOVING SAID MOUNTING TOWARD SAID MAIN ROLLERS TO APPLY ROLLING PRESSURE TO THE RING BEING ROLLED AND CONTROLLING THE PRESSURE FOR FINISH ROLLING THE RINGS.

Claim 2

AN APPARATUS FOR MANUFACTURING RINGS, ESPECIALLY FOR OUTER AND INNER BEARING RACES, COMPRISING A PAIR OF MAIN ROLLERS THE AXES OF WHICH ARE INCLINED TO EACH OTHER, SAID ROLLERS BEING DISPOSED SYMMETRICALLY WITH RESPECT TO EACH OTHER WITH SAID ROLLERS BUTTED TOGETHER AT THE LOWER PORTIONS THEREOF, EACH OF SAID ROLLERS HAVING AT LEAST TWO SMOOTH CONVERGING SURFACES, ONE OF SAID SURFACES ON EACH ROLLER BEING ADAPTED TO ROLL THE LATERAL SIDE OF THE RING MATERIAL AND BEING SPACED FROM AND OPPOSED TO THE CORRESPONDING SURFACE ON THE OTHER ROLLER, AND THE OTHER SURFACE ON EACH ROLLER BEING ADAPTED TO ROLL THE PERIPHERAL SIDE OF SAID MATERIAL AND BEING CONTIGUOUS WITH THE CORRESPONDING SURFACE ON THE OTHER ROLLER, THE CROSS SECTIONAL SHAPE OF SAID SURFACES TAKEN IN A PLANE THROUGH THE AXIS OF THE RING BEING ROLLED TOGETHER CONFORMING TO THE CROSS SECTIONAL SHAPE OF THE FINISHED OUTER AND LATERAL SURFACES OF THE RING, AND BEING CAPABLE, IN OPERATION, OF ROLLING SAID SURFACES AT THE SAME TIME IN ONE OPERATION, AN INNER ROLLER POSITIONED BELOW THE BUTTING PORTIONS OF SAID MAIN ROLLERS AND HAVING A CROSS SECTIONAL SHAPE AT THE PERIPHERY THEREOF CORRESPONDING TO THE CROSS SECTIONAL SHAPE OF THE INNER PERIPHERAL SURFACE OF THE RING BEING ROLLED, AND A PLURALITY OF SUPPORTING ROLLERS SPACED AROUND THE PERIPHERY OF THE SPACE IN WHICH THE RING IS TO BE ROLLED IN SUCH A MANNER THAT EACH OF THE ROLLERS COMES INTO CONTACT WITH THE OUTER PERIPHERY OF THE RING WHEN THE RING HAS BEEN ROLLED TO EXPAND ITS OUTER DIAMETER TO ITS FINISHED SIZE AND EXPANDS ITS CROSS SECTIONAL SIZE INWARDLY, THE OUTER DIAMETER AND PERIPHERY OF THE FINISHED RING BEING DETERMINED BY SAID SUPPORTING ROLLES, SAID SUPPORTING ROLLERS BEING ARRANGED AT SMALL DISTANCES FROM EACH OTHER, WHICH DISTANCES ARE SMALL RELATIVE TO THE THICKNESS OF THE RING BEING ROLLED SO AS TO ELIMINATE THE TENDENCY OF THE RING BEING ROLLED TO BULGE OR OTHERWISE BE DEFORMED BY FORCES ACTING IN THE RADIAL DIRECTION, A COMMON MOUNTING ON WHICH SAID INNER ROLLER AND SUPPORTING ROLLERS ARE MOUNTED, AND MEANS COUPLED TO SAID MOUNTING FOR APPLYING PRESSURE TO SAID MOUNTING AND MOVING SAID MOUNTING TOWARD SAID MAIN ROLLERS TO APPLY ROLLING PRESSURE TO THE RING BEING ROLLED AND CONTROLLING THE PRESSURE FOR FINISH ROLLING THE RINGS.