Patent ID: 6726547
Filing Date: 2004-04-27
Classification: B24D,Y10T

Abstract:
An apparatus for slicing a cylindrical drum made of a thin metal sheet into a plurality of endless metal rings, comprising:a support shaft rotatable about its own axis; a cylindrical drum holder supported on said support shaft for holding said drum by pressing engagement with an inner circumferential surface of the drum over an entire length thereof; and slicing means having slicing edges for slicing the drum into the metal rings by engaging and cutting into the drum at predetermined cutting positions thereon while the drum is being rotated by said support shaft through said drum holder; wherein said drum has recesses defined in opposite ends thereof, fully circumferential cut-off portions at said opposite ends including said recesses, and a ring forming region extending between said fully circumferential cut-off portions for forming said metal rings, said drum holder having engaging members for engaging in said recesses to prevent said fully circumferential cut-off portions from rotating when said drum holder holds said drum.