Researches on the Synthesis of the Six-Bar Linkage : Part 1, As Regards the Type A·3

Abstract

As regards a plane linkage mechanism which has only turning pairs of one degree of freedom, the synthesizing of the mechanism in which the follower is able to obtain our desired displacement of the swinging angle in case of giving the turning motion to the driving link is to be required for all the persons who are concerned not only with irregularly moving mechanisms but also with computing mechanisms. The author has previously performed the synthesis of a 4-bar linkage, and, in addition, has found out that its mechanism is not capable of satisfying all the demand for more complicated displacements and that a 6-bar linkage mechanism can fulfill this requirement. Furthermore, as the result of his study on the method of the synthesis in regard to only one type which remains still unresearched among the 6-bar linkages, he has been able to present a new rapid method of geometrical synthesis of the type A·3. Next, in order to increase the accuracy of the synthesis of the type A·3, the numerical equation and vector diagram methods of this type in case of giving some precision points on the displacement curve in addition to some conditions enlarging Freudenstein's method have been described. Examples of the synthesis have been shown in connection with the practical displacements. In this way, it is expected that the design of the type A·3 is to be improved and its accuracy increased. This paper has been compiled from two articles Researches on the Synthesis of the Six-Bar and Researches on the Synthesis of the Six-Bar Linkage (A·3 Type) which are both written in Japanese.