Fundamental Researches on a Perfectly Balanced Rotation-Reciprocation Mechanism : Report 1,Basic Theories of This Mechanism, and Basic Constitutions

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The present investigation relates to a rotation-reciprocation mechanism and more particularly to a perfectly balanced, vibrationless, geared device or machine part, in which linear reciprocating motion is converted to uniform speed circular rotating motion or vice versa. In this report, fundamental principles both of generation of linear reciprocating motion by combining two uniform speed circular rotating motions and of perfect balance are theoretically analyzed. And theoretical equations on equivalent moment of inertia about crankshaft are obtained in order to ascertain that the vibration of this mechanism is not produced by polar moment of inertia. Fundamental forms of these mechanisms have been classified by constitutions and discussed. From this classification, crankshaft rotary motion system and crankshaft planetary motion system are obtained, and as an example, perfectly balanced theory of an internal geared device of crankshaft rotary motion system for the sake of simple constitutions is described.
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