CNC Grinding Machine System Reliability Analysis And Evaluation

CNC grinding machine is a kind of using grinding tools to grinding workpiece surface machine tools, is a kind of ensuring the workpiece machining accuracy Key equipment. The reliability is an important index of CNC grinding machine, it is the core factor of the quality of CNC grinding machine. The reliability of the CNC grinding machine is important to the broad users. Recent years, CNC grinding machine in the production and application domain have a rapid development in our country. But compared with the industrial developed countries, there is a great distance. Improved the reliability of CNC grinding machine has become the Key Technologies for manufacture enterprise to survival and development.In this master dissertation, taking CNC grinding machine as object, because of the lack of research reliability on the product and the urgent demand for the product of reliability, carried out reliability analysis and evaluation of the CNC grinding machine. Through investigation and unified consult literature material, familiar with the working principle and system structure of the CNC grinding machine, the CNC grinding machine can be divided into nine subsystems; Collected and finished the failure mode and the failure data of the CNC grinding machine, Fault Tree Analysis for the nine subsystems individually, then Obtained the figures of FTA; Failure Mode Effect Analysis for the nine subsystems individually, then Obtained the table of FMEA; Based on the 42 failure data of the CNC grinding machine, building the Weibull distribution model of the CNC grinding machine and Reliability Evaluation of the CNC grinding machine.