Volume 20 Issue 02 - Publications Date: 1 February 2001
A New Zero-Dimension Robot Wrist: Design and Accessibility Analysis
D.C.H. Yang University of California, Los Angeles, California and J.W. Rauchfuss
This paper presents the design of a robot wrist with zero hand length and unlimited mutually orthogonal joints. This design is an improvement over existing ones. When equipped with this type of wrist, a robot's entire reachable workspace becomes the dexterous workspace. Because some wrist joint limitations may need to be imposed under practical consideration, to better assess this new wrist design, kinematics on robot point accessibility is derived. An algorithm and a software package are developed that enable the plotting of the point accessibility throughout the robot's entire workspace. Examples for demonstration are also included.
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