| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pressing machine capable of reducing friction between a cylindrical workpiece and a die. <P>SOLUTION: The pressing machine includes a plurality of rollers 32 for processing at least a part of the outer circumferential surface 28 of the cylindrical workpiece 20, a punch 10 engaged with the inner circumferential surface 26 of the workpiece 20 and relatively movable to the rollers 32, holders 34 with a cross section contacting with the roller 32 having an arcuate support surface 341, and retainers 36 facing the holders 34 with the rollers 32 interposed therebetween. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
