Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1989-07-21
1990-06-26
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72222, 72364, B21B 3906
Patent
active
049361244
ABSTRACT:
A roll forging machine includes an automatic stock feed which receives the stock in a receptacle from a conveyor and then swings the stock to a horizontal feed position after sensing the temperature of the stock. If the stock temperature is insufficient for proper forging the receptacle swings to a dump position to return the stock to a furnace. If the stock temperature is sufficient the receptacle in the horizontal position is indexed into the forging rolls and to place the stock into a stock gripper of a transfer. The stock gripper is mounted on a grip slide for movement in the "X" direction aligned with the direction of the roll passes. The grip slide is in turn mounted on a carriage for movement in the "Y" direction transverse the direction of the roll passes. Both the grip slide and the carriage are driven electrically by respective servomotors in turn driving timing belts to which the carriage and grip slide are clamped. The servomotor for the grip slide accelerates the stock to a predetermined velocity until the stock is engaged by the forging rolls and then enters a free-wheeling mode during roll forging during which the grip slide is driven by the forging rolls, and then decelerates the stock. During the free-wheeling mode the servomotor for the grip slide may exert a slight tension or compression bias on the stock. The carriage moves the grip slide from pass to pass and may do so in any order. During the movement from pass to pass the gripper and thus the stock is rotated 90.degree.. At the completion of the roll forging the grip slide accelerates the stock to an exit velocity whereupon the stock is released by the gripper to exit the machine. The grip slide returns the open gripper to receive the next stock to repeat the roll forging cycle.
REFERENCES:
patent: 2790530 (1957-04-01), Stoltz
patent: 3338081 (1967-08-01), Schiller
patent: 3630061 (1971-12-01), Wilson
patent: 3831425 (1974-08-01), Kita
patent: 4449390 (1984-05-01), Pontini
Larson Lowell A.
The Ajax Manufacturing Co.
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