2A1-P21 Motion Analysis of Lever-Crank Mechanism and Design of Grooved Cam using Envelope Curve in the Combined-Type CVT(Mechatronics for Ecology System)

Abstract

We propose a combined-type continuously variable transmission which has quadric-crank chains, one-way clutches, spur gears, and a plate cam etc., as one of the conduction mechanisms. Since the proposed mechanical design is not based on friction conduction, it provides advantage for creating no noise and no slip, and maintaining high transmission efficiency. In this paper, we explain about motion analysis in lever crank mechanism, and design of grooved cam using an envelope curve, as one of the plate cam. It has an advantage point that the synchronization between the rotation of cam and the one of crank at the input axis can be taken mechanically without any electrical control.