ABSTRACT

For many industrial parts, their resting pose differs from the orientation desired for assembly. It is pos­ sible in many cases to compensate for this difference using a parallel-jaw gnpper with fixed orientation. The idea is to arrange contact points on each gnpper jaw so that the part is reonented as it is grasped. We ana­ lyze the mechanics of compensatory grasping based on a combination of toppling, jamming, accessibility, and form closure and describe an algorithm for the design of such grasps based on the constrained toppling graph.