Research on the Availability Model of NC Machine Tool
Firstly, this paper analyzes dynamic change process for NC machine tool and gets the system state transition and its corresponding matrix of transition probabilities. The models of instantaneous availability, steady-state availability and mean availability in the setting time can be got through solving the equation of state. Then, on the base of 313 fault data from 7 NC machine tools, the solutions of three type models can be obtained. The Analysis results of the models can be applied to the establishment of maintenance strategy for NC machine tools, as well as provide basis for the availability prediction.
NC machine tools availability failure rate repair rate dynamic model
WEI Linghui SHEN Guixiang Zhang Yingzhi CHEN Bingkun FAN Shaohua WEI Linghui
College of Mechanical Science and Engineering,Jilin University Changchun,130022,China Changchun University of Technology. Changchun,130012,China
国际会议
长春
英文
526-529
2010-08-24（万方平台首次上网日期，不代表论文的发表时间）