| 摘要 |
PROBLEM TO BE SOLVED: To prevent deflection from being generated on a flange member 22 when a shaft member with a flange is manufactured by inserting a pipe material into a hole formed on the flange member 22, projecting an end from the hole, diameter-enlarging the pipe material by electro-magnetic molding in that state and joining both members. SOLUTION: The flange member 22 is formed by superposing two plate-like members 24, 25 comprising any aluminum alloy extrusion materials such that an extrusion direction is vertically crossed to each other and the hole is penetrated through both plate-like members 24, 25 in a plate thickness direction. Front surfaces of both ends 24b, 24c of the plate-like member 24 and both ends 25b, 25c of the plate-like member 25 become mounting surfaces to partner members respectively. The shaft member 23 is diameter-enlarged at an inner side of the hole and is closely fixed to an inner peripheral surface of the hole and a portion projected to a front side of the hole is enlarged to form an enlargement part 28. A rear side of the hole is swelled to form a projection part 29 and the flange member is clamped between the enlargement part and the projection part. COPYRIGHT: (C)2006,JPO&NCIPI
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