Forging machine with die holder lateral adjustment

Details Forging machine with die holder lateral adjustment Forging machine with die holder lateral adjustment

1992-12-30

1994-03-15

Jones, David

Metal deforming

By three or more coacting relatively movable tools

Concurrently actuated tools

72446, 72447, 7245301, B21J 702

Patent

active

052937690

ABSTRACT:
A forging machine has four forging rams (2) supported by the machine frame (1) for movement radially towards and away from the system axis (5) in an X arrangement at 90.degree. to one another. Piston and cylinder units (12-15) on the machine frame each have a ram (2) as a constituent part and have a stroke corresponding to the working stroke of the ram. A crosshead (16) supports each piston and cylinder unit, and is adjustable (23-25) relative to the machine frame for setting the stroke position of the ram. An adjustable die holder (6) at the radially inner end of each ram adjusts a die (5) thereon in a direction transverse to the radial direction of the ram, so that the dies can be positioned with parts of their working surfaces overlapping side surfaces of adjacent dies to form a closed forging pass contour smaller than the working surfaces of the dies. Radially extending drive shafts (58) external to the rams and gear units (54-59) at the radially inner ends of the shafts adjust the die holders. Each gear unit is attached (57) to the associated ram, and a rotary coupling (60) is provided between each gear unit and a shaft drive device (63) for facilitating the die holder adjustment dependent on ram radial movement.

REFERENCES:
patent: 4813263 (1989-03-01), Schubert et al.
patent: 4879893 (1989-11-01), Duri et al.
patent: 4905495 (1990-03-01), Pahnke

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