Gripping device
AssigneeKabushiki Kaisha Komatsu Seisakusho
InventorHiroshi Asamoto
Life of this patent
Estimating the term…
Abstract
A gripping device for use in an industrial robot or manipulator including a pair of clamp arms mounted on a base plate of the device and connected with a clamp arm operating rod through a pair of links and a cylinder-piston assembly having a misgrip detecting mechanism. One of the pair of clamp arms is shorter than the other clamp arm and is provided with an additional cramp arm swingable with respect to the short clamp arm. The misgrip detecting mechanism is operated by the action of a pressure switch provided in a hydraulic fluid conduit connected between the hydraulic fluid supplying source and a pressure chamber formed within the cylinder-piston assembly. Thus, the gripping device can positively and effectively grip a workpiece.
Claims4
In a workpiece gripping device including a pair of clamp arms pivotally mounted on a base plate, said clamp arms being connected to a clamp arm opening and closing rod through a pair of links, the improvement wherein one of said pair of clamp arms is shorter than the other clamp arm and an additional clamp arm is pivotally connected to said shorter clamp arm, said additional clamp arm including a pin projecting from the surface thereof, said short clamp arm including a long, narrow hole extending in the swinging direction of said additional clamp arm and formed on the surface thereof facing said additional clamp arm in a position opposite to said pin projecting from said additional clamp arm, whereby the pivotal movement of said additional clamp arm is limited by said pin in said slot.
Dependencies are inferred from the claim text.