Abstract
The reliability system evaluation of heavy nc machine tool is the guarantee of safety production. And the reliability evaluation index system is the important premise in evaluating. In this paper, the reliability evaluation system of heavy nc machine tool is determined on the basis of scientific principle, systematic principle, comprehensive principle, hierarchical principle, dynamic principle, fuzzy principle, and feasibility principle. According to the linear membership function to determine the fuzzy comprehensive evaluation matrix, the evaluation of heavy nc machine tool is carried out by establishing the fuzzy comprehensive evaluation model. In the end, through the given data the simulation experiment is carried out to show that the method is scientific and practical.
