Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1985-12-19
1987-08-04
Echols, Percy W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
72 68, B21K 132
Patent
active
046836306
ABSTRACT:
A method for manufacturing an integrated wheel for a vehicle, on which a tire is mounted, by a combination of die forging work, press spreading work and rotative ironing work, the method including the steps of integrally molding by die forging work a disc of the wheel and a thick tubular portion whose outer peripheral surface is made approximately parallel to the axial direction of the wheel through the root portion enlarged in the outer peripheral edge of the disc in the diametrically outward direction; performing the work for spreading both axial end edges of the thick tube portion in the diametrically outward direction by means of a press and work for pressing a rotative ironing tool against the axial intermediate portion of the thick tubular portion carried out after or prior to said spreading step; allowing the material to escape in a direction opposite the travelling direction of the rotative ironing tool in the subsequent step during pressing; and thereafter pressing the rotative ironing tool against the pressed portion to move the tool in the other axial direction by the pressed portion for rotative ironing to draw the other axial portion.
REFERENCES:
patent: 3263315 (1966-08-01), O'Brien
patent: 4048828 (1977-09-01), Lucas et al.
patent: 4528734 (1985-07-01), Bever
Asari Akira
Hattori Shigeo
Ueno Tsuneya
Yamamura Takashige
Echols Percy W.
Kabushiki Kaisha Kobe Seiko Sho
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