Deceleration method and apparatus for a moving bolster for a pre

Details Deceleration method and apparatus for a moving bolster for a pre Deceleration method and apparatus for a moving bolster for a pre

1991-10-10

1993-09-07

Bilinsky, Z. R.

Tool changing

Process

72446, 83563, 483 1, 483 28, B21J 1308, B23Q 3155

Patent

active

052423573

ABSTRACT:
A method and apparatus for changing dies on a moving bolster for a press including a control circuit in combination with a cam-actuated deceleration valve. A cam is located at a predetermined location along a path for the moving bolster. Upon reaching the cam location when the bolster is moving toward or away from the press, the deceleration valve is actuated to inhibit and shut off a flow of air to air-operated motors on the bolster. Thereupon, the bolster moves to a stop at a predetermined location relative to the press.

REFERENCES:
patent: 4433620 (1984-02-01), Kiyosawa
patent: 4630536 (1986-12-01), Shah
patent: 5121538 (1992-06-01), Kerr

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