Abstract

In earlier syntheses of path generating link mechanisms attention has been paid only to make a coupler curve pass through the precision points on the ideal curve, and the order of them has been neglected, which is an important problem in tracing the ideal curve. In the present paper, the authors first classify, about the number of loops, the curves described by a point on the coupler link jointed to the driving link and obtain a planer five-link mechanism. Synthesizing a four-link mechanism which satisfies the angular relation between the driving and driven links of the mechanism, and combining these five and four-link mechanisms we obtain a six-link mechanism. Modifying the link parameters so that the tangential error of the coupler curve may become small, we can synthesize a planar six-link mechanism satisfying the order of the precision points on the ideal curve. The concept presented in the paper is applicable to multiple-link mechanisms.

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