| 摘要 |
PROBLEM TO BE SOLVED: To improve a squareness in the outer peripheral portion and a dimensional precision of the outer peripheral diameter of a work by applying a form-working to the forge-formed work. SOLUTION: An upper die part 40 is displaced to the lower part under driving action of a driving part 14 disposed at the upper part of a body part 12, and the lower surface of the work 16 is pressed to a forming surface 58 with the upper die part 40 and also, after displacing the upper die part 40 to the upper part, the work 16 is pushed up to the upper part with a lower die part 38 under the displacing action to a push-out member 20 to the upper part and the outer peripheral surface of the work 16 is ironing-formed with an ironing part 60 projectively formed in the radius inner direction in the inner peripheral surface 56 of an outer ring 57. COPYRIGHT: (C)2005,JPO&NCIPI
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