Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1983-02-24
1984-09-11
Gilden, Leon
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72354, 7245305, B21D 2200
Patent
active
044702868
ABSTRACT:
An upsetter mechanism including a die set having a plurality of juxtaposed forming sections, first and second punches extractably protrudable into the respective forming section of the die set, and a punch drive mechanism for driving the punches through a hydraulic cushioning mechanism, the hydraulic cushioning mechanism including a hydraulic cylinder having a maximum diameter corresponding to the total load of the punches; a main pressurizing ram slidably fitted in the hydraulic cylinder; a punch attached to the hydraulic cylinder; and a movable pressurizing ram slidably fitted in a cylinder formed in the hydraulic cylinder of maximum diameter to cope with the load of the first punch and having a second punch attached to the fore end thereof, the movable pressurizing ram being operable independently of the main pressurizing ram.
REFERENCES:
patent: 2143429 (1939-01-01), Auble
patent: 2305610 (1942-12-01), Ernst
patent: 3290919 (1966-12-01), Molinaho et al.
patent: 3311049 (1967-03-01), Hugi
patent: 3650142 (1972-03-01), Baldwin
Asari Akira
Dohsai Takayoshi
Kaneko Fuminori
Matsumoto Satoshi
Yamamura Takashige
Gilden Leon
Kabushiki Kaisha Kobe Seiko Sho
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