The magnitude of gripping force exerted along line aa on the nut when two 56-lb forces are applied to the handles is 392 N.
On the basis of the wrench theory and the principle of force equivalence, a mathematical model of the point contact friction force between the gripper jaw and the workpiece was developed.
The eccentricity of the workpiece was investigated, and its impact on the jaw's grasping power was assessed. The factors affecting the variation of gripping force under heavy load conditions were revealed by this model, which also provided a theoretical foundation for research on the load-carrying capacity of stable gripping.
The total arithmetic force acting on the gripper's fingers is the gripping force.
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