| 摘要 |
PROBLEM TO BE SOLVED: To provide a drawing device which can easily and surely perform drawing machining whose cross section is projected and recessed, on the outer cylinder of a vibrationproof bush. SOLUTION: First and second die pieces 31, 32 divided and formed in a plurality of numbers in the peripheral direction and having an inside surface different in the curvature radius are disposed alternately and radially on a jig body 20 movable in a direction toward a product receiving body 10 to constitute a drawing die 30. A level difference c is formed on inside surfaces 31a, 32a of both die pieces with each die piece held in a displaceable manner in the axial direction while holding the level difference c along a tapered mounting surface section 24. Each die piece is displaced on the small diameter side along the mounting surface section 24 by the movement of an approach direction relative to the jig body 20 and the product receiving body 10, so as to perform drawing machining whose cross section is projected and recessed, on the outer cylinder of the vibrationproof bush. COPYRIGHT: (C)2003,JPO
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