Pneumatic/electric actuator

Details Pneumatic/electric actuator Pneumatic/electric actuator

1992-08-17

1993-12-14

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

364487, 364488, 74 2, G05B 1101

Patent

active

052706257

ABSTRACT:
A pneumatic/electric actuator for precisely positioning a workpiece and for applying a force to the workpiece. The pneumatic/electric actuator includes an electric actuator in the form of a voice coil motor having an output rod coupled to the cylinder rod of a pneumatic cylinder. The output rod is mounted for extremely precise and measured movements by the electric actuator and can be adapted to contact and precisely position the workpiece. After precise positioning of the workpiece the pneumatic cylinder can be actuated to extend the cylinder rod and exert a force through the output rod to the workpiece. In an alternate embodiment the electric actuator is mounted directly on a pneumatic cylinder and can be moved by the pneumatic cylinder to increase an effective stroke of the output rod of the electric actuator.

REFERENCES:
patent: 4423642 (1984-01-01), Kuboichi
patent: 4563908 (1986-11-01), Shube
patent: 4759124 (1988-07-01), Snyder et al.
patent: 4913613 (1990-04-01), Hirschmann
patent: 5175456 (1992-12-01), Neff et al.

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