Method of working end part of metallic tube body and...

Details Method of working end part of metallic tube body and... Method of working end part of metallic tube body and...

2005-07-19

2005-07-19

Tolan, Ed (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

Tool orbiting or rotating about an axis

C072S067000, C072S115000, C072S117000

Reexamination Certificate

active

06918277

ABSTRACT:
This invention has an object of diminishing an inside diameter while securing the area of the terminal edge larger, at the extremity of a cylindrical body made of a metal used for a vibration isolating bushing and the like. Accordingly, the present invention provides a manufacturing method of vibration isolating bushing10serving to stick the rubber elastomer16to the outer circumference of an inner cylinder12made of a metal by means of vulcanization forming, by diminishing in diameter the extremity18by cold plastic working while turning a diameter diminishing jig40and pressing against the circumferential surface of the axial extremity18of the inner cylinder12, and further by enlarging and forming the terminal edge19by cold plastic working while turning an upsetting jig50and pressing against the terminal edge19at the extremity18being diminished in diameter.

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patent: 2003/0192358 (2003-10-01), Gouiran
patent: 133014 (1946-07-01), None
patent: 49-32860 (1974-03-01), None
patent: 11-189022 (1999-07-01), None

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