CNC Tube Bending Machine Life Cycle Management Strategy Research Based On Reliability Analysis

The stability and fault rate of CNC tube bending machine is one of the important factors that it affects the quality of bending tube,Equipment health management and appropriate maintenance are to be improving the production efficiency of the CNC bending machine,ensuring quality of production,reducing the consumption of energy and materials,reducing the production cost.The paper takes the CNC tube bending Machine as the research object, To analyze on-site fault data of the series 14 CNC tube bending machine, from the overall grasp of this series CNC tube bending machine failure and determine the reliability of the weak link, According to key parts of this series CNC tube bending machine fault process modeling,Which established CNC tube bending machine life-cycle management strategy.Firstly, according to the structure and working principle of the CNC tube bending machine,the system is divided into subsystem, which is based on the failure data collection and data coding; Secondly, the FMECA analysis method was used to determine the ratio of each fault location, failure mode and failure cause and the ranking for hazard; Then, introducing the average rank method modified multiple truncated data(including timing truncated test, machine the remaining subsystem fault time caused by the truncated test data) to bring the fault data sequence deviation, with approximate rank method computational experience distribution function, parameters are estimated using least squares method, to realize CNC tube bending machine and the subsystem failure process modeling and analysis; Finally, based on the reliability analysis results, determine the key subsystems change life, spare parts inventory and maintenance time of the whole calculation, lay the foundation for the formation of this series CNC tube bending machine fault prevention and maintenance of technical guidance document,to achieve reliability growth of CNC tube bending machine...