Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1985-12-19
1987-06-02
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72 85, B21D 2216
Patent
active
046692916
ABSTRACT:
An improved multiple roller spinning machine for spinning vehicle one-piece wheels is disclosed in which the roller holder is capable of sliding in a direction parallel with the axis of spinning and has a hydraulic cylinder which moves through its axially movable piston rod the holder horizontally thereby bringing the multiple rollers sequentially in to an operating position just above the wheel material clamped between the dies of the driving and driven spindles. Each of the multiple rollers is coupled to a control hydraulic cylinder which drives through its piston the respective roller vertically between a retracted position and a drawing position where the roller is pressed against the periphery of the wheel material. Thus, not only can the sequence of different drawing steps, in a most preferable embodiment, from rough to finishing drawing, be completed in an automatic continued manner, but also operation of the hydraulic cylinder to shift the holder, with the particular roller pressed against the material periphery being set in spinning, causes the roller to draw a wider range than its size across the U-cross section portion of the periphery. According to another embodiment, the holder carries therein multiple rows of different forming rollers arranged radially about a common center such that the wheel material can be subject to drawing by multiple rollers simultaneously applied at different points about the material periphery.
REFERENCES:
patent: 1104559 (1914-07-01), Sharp
patent: 3287951 (1966-11-01), Widera
patent: 3418838 (1968-12-01), Rotert et al.
patent: 3477264 (1969-11-01), Sohlemann
patent: 3517534 (1970-06-01), Werner et al.
patent: 4457152 (1984-07-01), Svagr
Asari Akira
Dosai Takayoshi
Fujimoto Kazuhiro
Hattori Shigeo
Matsumoto Satoshi
Kabushiki Kaisha Kobe Seiko Sho
Larson Lowell A.
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