The geometric fundamentals for two-disk cam mechanisms operating two rigidly connected oscillating followers with straight-line or circular-arc profiles are developed. Special attention is paid to the existence of single-disk cam mechanisms of this kind. For this purpose the problem of plane curves with an isoptic circle is discussed. Finally single-disk cam mechanisms with two oscillating roller followers joined by a coupler link are considered.
The skew four-bar M1, A1, A2, M2, with the fixed link M1M2 = g, the cranks MiAi = Ri rotating about the axes ai through Ai (i = 1,2) and the coupler A1A2 = b, with spherical joints at A1 and A2, has been investigated recently by several authors.
A special case arises if the common perpendicular of a1 and a2 coincides with M1M2.
In this paper a complete discussion of the mobility is given for this case in terms of the parameters g, R1, R2, b and the angle α between a1 and a2.
Furthermore some remarks are added on the eighth order elliptic couple curve in the special and the general case.
The paper treats the analogy of Roberts' Law for Stephenson-1 and Stephenson-2 mechanisms. Besides the investigation of cognates producing identical six-bar coupler curves of genus 7, the plural generation of identically moving coupler-planes by alternative six-bar linkages is observed.
This paper examines the problem of finding the laws of distribution of the inertial forces in machine assemblies using Artobolevsky's criterion proposed for the characteristics of the regimes of motion of the machine assemblies.
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