Importance

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Abstract

A workpiece positioning apparatus comprising a housing including opposite side walls defining a hollow therebetween; a motor assembly secured to a housing side wall and including an output shaft; and a rotor. The rotor includes a first journal portion connected to the output shaft and journaled in one of the housing side walls, a second journal portion journaled in the other housing side wall, and a central generally circular disc portion positioned in the hollow of the housing between the housing side walls and defining a bifurcated segment. A pivot shaft is journaled in a the housing for rotation about an axis laterally spaced from and parallel to the rotational axis of the output shaft and a driven member is drivingly connected to the pivot shaft, positioned within the housing between the housing side walls, and defines a crank arm. A workpiece engaging member is fixedly mounted on the pivot shaft and is positioned exteriorly of the housing, and a rod assembly is positioned within the housing between the housing side walls. The rod assembly is positioned at one end thereof within the bifurcated segment of the disc portion of the rotor and pivotally connected to the disc portion at a location radially displaced from the output shaft axis. Another end of the rod assembly is pivotally connected to the crank arm, whereby energization of the motor assembly pivots the workpiece engaging member about the axis of the pivot shaft.

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First Claim