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This paper discusses design of a high speed parallel mechanism for electronic part mounters. First, a typical four degree of freedom pick-and-place motion is analyzed, and the basic concept of the virtual force redundancy (VFR) during the motion is proposed to design high speed parallel mechanisms. Second, a basic structure of the high speed parallel mechanism using the newly designed constrained...
Stiffness is one of the key issues in designing a mechanism. On the other hand, optimizing techniques with mathematical model are required to pursue the higher acceleration by parallel mechanisms. Consequently, to find a proper way to determine the total stiffness of the mechanism is desirable. FEM (Finite Element Method) is useful, but it does not fit the optimization techniques. Therefore, a systematic...
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