Mechanism Robustness Design Based on Uncertainty Effect Resulted from Error of Profile and Position of Kinematic Pairs

摘要

Aimed at sensitivity to profile and position error, authors select crank-leader mechanism as example, through constraint analysis, discover that planar closed chain mechanism is subjected to ideal plane, in fact, in which there normally is redundant constraint. This kind of redundant constraint resulted that system is very sensitive to manufacture error, and require very high manufacture precision. Therefore, configure constraint and freedom rightly, and design self-adjustability mechanism, all these methods will decrease sensitivity resulted from error, reduce manufacture cost and assembly difficulty, promote transmission efficiency, and prolong using life. In this way, oriented from structure factors, it eliminate effect on machine quality resulted from error, which include manufacture, assembly and working condition, so whole mechanism's robustness has improved obviously.