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FENG Zengming,PU Qianshuai 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Based on studying of the working principle of rocker-pin chain Continuously Variable Transmission (CVT), the profile of rocker pin was improved from arcs into a combination of involute and cardioid which has better transmission performance. The notion of equivalent teeth number was brought up, and then the equivalent teeth numbers of the driving and driven pulleys were calculated under different transmission ratios. The variable pitch characteristic of new rocker-pin chain was studied and the harmonious relationship between transmission ratio, pitch increment and chain link rotation angle was analyzed. Based on the force analyzing of each component of CVT, transmission efficiency of the CVT was studied and the discipline of transmission efficiency changing with the variation of friction wedge angle was analyzed. The calculation results show that the new design method not only realize the variable pitch characteristic, but also improve the transmission efficiency of new rocker-pin chain CVT effectively.
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