Research on Early Failure Elimination Technology of NC Machine Tools

The frequent occurrence of early failure has long been restricting the corrective of the reliability of domestic numerical control (NC) machine tools. At present, there is a lack of a systematic and effective method to eliminate the early failure of machine tools. The difficulty in eliminating the early failure of the machine tools lies in how to calculate its early failure period accurately and design the failure closed-loop elimination program properly. So, a 4-parameter non-homogeneous Poisson process (NHPP) modeling method and a closed-loop elimination system for the early failure of the machine tools were proposed to solve those problems in this paper. The method proposed in this paper is applied to the enterprise, and its feasibility is verified. The research of this paper lays a foundation for the elimination of the early failure and the improvement of the reliability level of the domestic NC machine tools.