Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1984-06-07
1987-06-23
Echols, Percy W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
72301, B21H 102
Patent
active
046741658
ABSTRACT:
The inventive method produces round parts consisting of profiled metal sections from a straight, profiled extruded section forming a wheel-like shape having butt ends joined together by welding. Bending the straight section into a round part is accomplished by first adjustably prestressing the straight section and then subjecting the prestressed section to a rolling bending operation. For this purpose, the section to be bent is wound either from one side or from both sides around the outside diameter of coordinated rolling dies the rotating rolling dies being able to additionally perform a translatory motion in the direction of the longitudinal axis of the section. The resulting wheel rim has the rim pan integrally joined to the rim ring.
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patent: 3148721 (1964-09-01), Seavers
patent: 3522644 (1970-08-01), Cavagnero
patent: 4266417 (1981-05-01), Imamura et al.
patent: 4454978 (1984-06-01), Schneider et al.
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