Mechanical Engineering - Theses

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The four bar linkage as a function generator

Cooper, Malvin David ( 1960)

Part I: A new concept of the synthesis of the four bar linkage as a function generator is presented. Existing methods of synthesis are examined in the light of this concept, and their advantages discussed. The basis for a new method of synthesis is presented. Part II: A machine which mechanically allows finding the by trial four bar linkage whose polodes are most nearly like the curves which generate the given function exactly has been constructed and calibrated. The apparatus is described and the conditions which indicate a solution are stated. Proof that these conditions are a solution is given. Two simple graphical methods of approximate synthesis have been developed and are used to minimize the trial and error required.