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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 m

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.

대표청구항 ▼

A pneumatic/electric actuator for precisely positioning and applying a force to a workpiece comprising: an electric actuator including a housing, a magnet fixedly mounted to the housing to establish a magnetic field, a coil piston slidingly mounted to the housing, a coil wrapped around the coil pist

A pneumatic/electric actuator for precisely positioning and applying a force to a workpiece comprising: an electric actuator including a housing, a magnet fixedly mounted to the housing to establish a magnetic field, a coil piston slidingly mounted to the housing, a coil wrapped around the coil piston, an interface block mounted on the coil piston, an output rod connected to the interface block for precisely and variably positioning the workpiece, and a sensor for determining the position of the output rod; a pneumatic cylinder stacked onto the electrical actuator, the pneumatic cylinder having a cylinder rod connected to the interface block and to the output rod to exert a force through the output rod to the workpiece; and control means connected to the sensor for controlling current flow to the coil for precisely positioning the output rod and connected to the pneumatic cylinder for controlling movement of the cylinder rod.