Metal deforming – With means to handle work or product – Including means to permit maneuvering of work or product at...
Patent
1991-05-22
1993-06-15
Larson, Lowell A.
Metal deforming
With means to handle work or product
Including means to permit maneuvering of work or product at...
72421, B21D 4300, B21J 1310
Patent
active
052188558
ABSTRACT:
In a manipulator (1) for forging machines, for example multiple-ram forging machines with a plurality of rams acting radially on the forging (2), the workpiece (2) is moved axially according to the forging sequence and the feed drive of the manipulator (1) takes place at a constant speed, an actively controllable, axially effective superposed drive acting intermittently on the gripper axle (5) of the manipulator (1) and at least one hydraulically working piston/cylinder unit (12) being provided for supporting the axially displaceable gripper axle (5) in relation to the manipulator housing (4). To design the control of the manipulator (1) in a mechanically constructive way so that it functions simply and reliably, the front and rear stroke spaces (18, 19) of the piston/cylinder unit (12) are connectable by a line (28) by means of a valve (26), and the piston/cylinder unit (12) is designed as a servo-control device (17), by means of which the piston/cylinder unit (12) can be controlled.
REFERENCES:
patent: 3447349 (1969-06-01), Lippke
patent: 3504512 (1970-04-01), Knowles
patent: 3557601 (1971-01-01), Schussler
patent: 3590616 (1971-07-01), Schussler
patent: 3750436 (1973-08-01), Harrison et al.
patent: 5000028 (1991-03-01), Krieger
Krieger Wilhelm
Werner Eberhard
Gurley Donald M.
Larson Lowell A.
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