Metal working – Method of mechanical manufacture – Wheel making
Patent
1990-03-27
1991-03-12
Echols, P. W.
Metal working
Method of mechanical manufacture
Wheel making
29412, 72356, 72 68, B21K 140
Patent
active
049983440
ABSTRACT:
A method of manufacturing a hub includes the following steps: rotary swaging a workpiece to form a semi-product, the workpiece is simultaneously struck by three or more dies from the outer peripheral side so that the semi-product is formed smoothly and homogeneously, and two bearing cup seats are simultaneously formed on both ends of the semi-product; and squeezing both ends of the semi-product by a right mold and a left mold so as to form a hub. The hub is produced in a fast speed so that the productivity is greatly increased.
REFERENCES:
patent: 504888 (1993-09-01), Nessel et al.
patent: 4464917 (1984-08-01), Kienhofer
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