Author(s): Zhaojun Yang, Chuanhai Chen, Guofa Li, Jili Wang, Xuejiao Du, and Xinhong Zhang
Article publication date: 2013-12-01
Vol. 31 No. 1 (special), pp. 383-388.
320
Keywords
Failure analysis; Machine tools; Maintainability; Power-law process; Repairable system.
Abstract
Machining tools are the main equipment for metal machining and consist of mechanical parts, electrical parts and hydraulic parts, and so on. In order to reduce the failures and improve the level of machine tools reliability, the paper firstly performs the failure analysis by the statistical method. Then the failure trends for the key parts of machining center are given using the power law process. In contrast with the usual method, which optimizes the maintenance under the repair costs, an optimization approach of maintenance is presented under the reliability constraints for machining center that used in a northeast manufacturing plant of China. The proposed analysis process could be a useful tool to assess the reliability and optimize the machine tools maintenance policy.