Abstract
The growing research field of precision instruments in every walk of life motivated to different and efficient technology. The millimeters have cut down to micrometer or even nanometers. This has led to development of compliant mechanisms. The gripper comprises of very simple structure from design and manufacturing consideration. The selection of the hinges plays a very important role as they replace the conventional torsional springs. The paper deals with the two design methods most widely used for designing the compliant gripper including the FEA and Pseudo Rigid Body Method. In this work rectangular and circular type hinges are considered. From the results obtained we can state that we get more logical and accurate results using the PRBM. Hence the error obtained in result of circular and rectangular hinge is 6% and 16% respectivelywhen compared with FEA results. The dimensions of aforesaid micro-grippers are 50 X 30 mm. The force range of the gripper is from 10N to 50 N.
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