Method of forming circularly bent articles, in particular wheel

Details Method of forming circularly bent articles, in particular wheel Method of forming circularly bent articles, in particular wheel

1976-11-17

1977-10-25

Mehr, Milton S.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

72 14, 72 21, 72175, 72312, 72168, B21H 106, B21K 104, B21D 501, B21D 714

Patent

active

040549828

ABSTRACT:
A method of forming circular rims for bicycle wheels from metal profiled strip material in which first strip pieces are cut to a length corresponding to the circumferential length of the rims, curved end portions are formed on each strip piece, and each strip piece is introduced into a three-roll ring rolling apparatus. After the strip piece has been worked up to the trailing curved end portion thereof, the adjustable middle roll of the rolling apparatus is shifted a small distance towards the two outer rolls into a position corresponding with a substantially bending-free passage of the trailing curved end portion of the strip piece. The invention further relates to a pressing apparatus for forming the curved end portions of the strip pieces and to a three-roll ring rolling apparatus for carrying out the method.

REFERENCES:
patent: 1773566 (1930-08-01), Boyle, Jr.
patent: 3048202 (1962-08-01), Hillix

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