Metal working – Method of mechanical manufacture – Pulley making
Patent
1990-05-16
1991-12-17
Echols, P. W.
Metal working
Method of mechanical manufacture
Pulley making
72111, B21K 142
Patent
active
050725092
ABSTRACT:
Method of manufacturing a belt pulley from a metal disk, e.g. a multiple-V-belt pulley, toothed belt pulley, flat belt pulley, etc., having a hub and an area that is provided with a profile which is basically hollow cylindrical and has a smooth or crowned outside. In a first operational step the metal disk is given a wave-like profile in its circumferential area and in following operational steps the respective final profile is completed. Known methods require numerous operational steps and a great force input to carry out the forming. Applicants' method permits high-quality belt pulleys to be manufactured from metal disks at a comparatively low amount of labor and cost involved in the working of the method. Applicants' method in a second operational step, rolls the wave-like profiled circumferential area (11) of the metal disk (1) to have a wave-like cross section with one wave maximum (12, 12') at each edge pointing radially toward the outside and a wave minimum (13, 13') laterally adjacent at the inside so that a wave-like contour is obtained with an optimum material distribution for further machining.
REFERENCES:
patent: 4055976 (1977-11-01), Kraft
patent: 4273547 (1981-06-01), Bytzek
patent: 4631946 (1986-12-01), Oda
Bichel Joachim
Temmann Robert
Echols P. W.
Leifeld GmbH & Co.
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