| 摘要 |
The power operated clamp secures a workpiece relative to a work piece support and includes a cylinder having a reciprocal piston and connected piston rod projecting from the cylinder. A bifurcated hollow housing is connectable to the cylinder and has an elongated internal guide slot with a free end of the piston rod extending within the guide slot. A pair of coaxial apertures having a common axis offset and the perpendicular to a longitudinal axis of the guide slot are formed in the housing. A rod end is connected to the free end of the piston rod for reciprocal movement and is slidingly guided within the guide slot. A pivot pin is rotatably disposed within the coaxial apertures for angular movement about the common axis and has an end extending externally from the housing and a lever arm extending internally within the housing. A pair of opposed links are pivotally connected to the rod end at one end and pivotally connected to the lever arm at another end for transforming the reciprocal movement of the rod end into angular movement of the pivot pin. A clamp arm is connected to the external end of the pivot pin for movement between workpiece clamping and release positions. Shaped mating surfaces are formed on the claim arm and the external end of the pivot pin for adjusting the angular orientation of the clamp arm with respect to the clamping position without disassembling the housing.
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