Abstract: A laminated body manufacturing apparatus for manufacturing an annular laminated body in which each layer is defined by a plurality of segments is provided with a feeding unit that sequentially feeds a plurality of parts to be processed on a band-like sheet material to a predetermined processing position; a processing unit that separates the segment from each part to be processed by a shearing processing in the processing position; and a laminating unit that receives the segment that is separated and lowered onto the plurality of segments that are lowered and defining one layer in advance and that rotates the received segment by a predetermined angle in a circumferential direction of the segment, each time when the shearing processing is performed, so as to place the sequentially lowered segment in a position to define the laminated body.

Abstract: A laminated body manufacturing apparatus for manufacturing an annular laminated body in which each layer is defined by a plurality of segments is provided with a feeding unit that sequentially feeds a plurality of parts to be processed on a band-like sheet material to a predetermined processing position; a processing unit that separates the segment from each part to be processed by a shearing processing in the processing position; and a laminating unit that receives the segment that is separated and lowered onto the plurality of segments that are lowered and defining one layer in advance and that rotates the received segment by a predetermined angle in a circumferential direction of the segment, each time when the shearing processing is performed, so as to place the sequentially lowered segment in a position to define the laminated body.

Abstract: A method of manufacturing a cam for a camshaft, comprising the steps of continuously applying, to a billet having a volume larger by a specified volume than a final product, a plurality of cold forging steps formed of a preliminary outline upsetting, an outline drawing, a simultaneous piercing of inner and outer diameter surfaces, a press-molding forming excess amount as burrs on the inner diameter surface, a piercing of the inner diameter surface for removing the burrs from the inner diameter surface, and a simultaneous ironing of the inner and outer diameter surfaces. The final finishing (machining) of a cam (profile) surface can be eliminated, and the final product of the cam for the camshaft having a high dimensional accuracy can be provided.

Abstract: A method of manufacturing a cam for a camshaft, comprising the steps of continuously applying, to a billet having a volume larger by a specified volume than a final product, a plurality of cold forging steps formed of a preliminary outline upsetting, an outline drawing, a simultaneous piercing of inner and outer diameter surfaces, a press-molding forming excess amount as burrs on the inner diameter surface, a piercing of the inner diameter surface for removing the burrs from the inner diameter surface, and a simultaneous ironing of the inner and outer diameter surfaces. The final finishing (machining) of a cam (profile) surface can be eliminated, and the final product of the cam for the camshaft having a high dimensional accuracy can be provided.