The Failure Analysis And Reliability Growth Technology Of The CNC Vertical Lathe

In order to increase the reliability of CNC lathe, based on series faulty data collected on the experimental works, we carefully carded and analyzed this patch of data. In this paper, we figured out some new analysis methods for CNC Vertical Lathe, which was based on the random faulty analysis of CNC Vertical Lathe and fuzzy comprehensive evaluation. This method meets various requirements of faulty data in practical project. And according to the results, we also give out increasing steps and it has practical value and theory significance for the reliability of CNC Vertical Lathe.1.Faulty analysis based on random CNC Vertical LatheWe analyzed the CNC Vertical lathe by some random statistics faulty analysis. Figured out the rating of all faulty parts of the equipment, faulty mode and the reasons of the faults. We grasped the whole situation of the occurrence of this kind CNC Vertical Lathe and found out the faulty mode that has the big significant impact on the whole lathe. By analyzing the mode and reason of the fault branches and subsystem, we found the ways to improve the reliability; By analyzing the hazards and checked out the weak link, we provided the basis for ruling out the fault.First, make the faulty mode, faulty parts and faulty reasons of the CNC Vertical Lethal into different categories, which is important for technology continues. The analysis of this type CNC Vertical Lethal contains:the main disorder of this CNC Vertical Lethal type is damage type fault and imbalance type, which is consisted with the practical data. next, we conducted analysis of the hazard degree of the CNC Vertical Lethal. based on the results, determine the hazard CNC Vertical Lathe Machine largest subsystem, for the subsequent failure to provide fuzzy analysis and reliability growth Data support.2.Faulty analysis based on fuzzy comprehensive evaculationWe selected Parametersβas the object, established corresponding reviews set according to factor set of the fault impact. We selected fuzzy membership function, set up Evaluation set which has impact on fault impact. failure mode affected by the failure to establish the fuzzy evaluation set, harm resulting failure of the subsystem Fuzzy evaluation matrix, evaluation results obtained by matrix operations, the final weighted average of the values obtained for the fuzzy subsystem hazard evaluation value, pursuant to order of each subsystem to determine the reliability of the model weak link CNC Vertical Lathe For CNC machine tools to provide a theoretical basis for the implementation of reliability growth.3.Increasing technology of CNC Vertical Lethal reliabilityBased on the random statistics analysis of CNC Vertical Lethal fault and the fuzzy comprehensive evaluation analysis, we explored the increasing technology of CNC Vertical Lethal reliability in different aspects. That are excluding the early fault of CNC Vertical Lethal and analyzing the designing, manufacturing, assembling and outsourcing. These methods can develop basis for increasing the CNC Vertical Lethal reliability. Improve the reliability of the numerical control equipment is a huge, complex project, increase the reliability of this technology for CNC Vertical Lathe enterprises to improve product reliability in the prospective study done; but also for other similar enterprises to provide a meaningful reference.