Systematic Synthesis and Applications of Novel Multi-Degree-of-Freedom Differential Systems

Author:

Kota S.1,Bidare S.2

Affiliation:

1. Design Laboratory, Department of Mechanical Engineering and Applied Mechanics, The University of Michigan, Ann Arbor, MI 48109-2125

2. Aeromover Systems Corp., 3045 Broad Street, Dexter, MI 48130

Abstract

A two-degree-of-freedom differential system has been known for a long time and is widely used in automotive drive systems. Although higher degree-of-freedom differential systems have been developed in the past based on the well-known standard differential, the number of degrees-of-freedom has been severely restricted to 2n. Using a standard differential mechanism and simple epicyclic gear trains as differential building blocks, we have developed novel whiffletree-like differential systems that can provide n-degrees of freedom, where n is any integer greater than two. Symbolic notation for representing these novel differentials is also presented. This paper presents a systematic method of deriving multi-degree-of-freedom differential systems, a three and a four output differential systems and their applications including all-wheel drive vehicles, universal robotic grippers and multi-spindle nut runners.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

Reference10 articles.

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3. Crossley, F. R. E., and Umholtz, F. G., 1977, “Design of a Three-Fingered Hand,” Journal of Mechanisms and Machine Theory, Vol. 12.

4. Datseris, P., and Palm, W., 1984, “Principles on the Development of Mechanical Hands which can Manipulate Objects by Means of Active Control,” ASME JOURNAL OF MECHANISMS, TRANSMISSIONS, AND AUTOMATION IN DESIGN, 84-DET-37, pp. 1–9.

5. Erdman, A. G., and Sandor, G. N., 1991, Mechanism Design—Analysis and Synthesis, Volume 1, Prentice Hall, Second Edition.

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