다구치 방법론을 이용한 6절 링크 핑거 클램핑 유닛의 최적 설계

Abstract

Tolerance analysis is very important for mass production of a mechanism parts to guarantee satisfactory performance with low production cost. Tolerance analysis of a linkage mechanism is important since linkage mechanism are very sensitive to the tolerance due to many shaft-hole connections. Typically, the tolerances are given by intuition and experiences, but it can be a cause of low performance or high production cost. Especially, the tolerance of a linkage has significant effect near-singularity since little dimension difference can change the performance dramatically. In this paper, we present an experimental tolerance design of a 6-bar toggle linkage mechanism for clamping application. The tolerance design is very important to the 6-bar toggle linkage mechanism since the clamping operation is done near-singularity. Based on design of experiment, the tolerances are determined by optimal criteria with performance and cost deviations. As a result, we determine the position with high tolerance and low tolerance.