The Research On Fault Diagnosis System Of Spiral Bevel Gear NC Machine Tool

In the equipment manufacturing industry is playing a more and more important role inmodern CNC machine tools, it is not only the level of national comprehensive nationalpower important foundation industry but also determine the level of national strategicposition, a measure of a country’s manufacturing industry modernization degree coremarkers tend to look at the country level of NC machine tool manufacturing.CNC machine tool function with the rapid development of information technology arealso constantly upgrading, the NC machine tool operating system than in the previousgeneral machine tool complex many, once fault occurs often in need of professionaltechnical personnel to carry on the inspection and repair, even the professional andtechnical personnel in the fault diagnosis often feel difficult, it will take a long time, notonly increase the NC machine downtime caused by the loss of more costly repair costs.Because of CNC machine tools is not only simple mechanical operation also involveselectrical, hydraulic, CNC etc. disciplines, this equipment maintenance personnelincreasingly high technical requirements, but rarely such a professional high-techpersonnel.If the NC machine tool fault can not be timely and accurate diagnosis and repair,will bring huge economic loss for enterprises, especially for the general small business itwill be difficult for them to bear, so how to fast and accurately on the NC machine toolfault diagnosis and the corresponding causes trouble-shooting will bring enormouseconomic benefit and social benefit.This thesis is directed to mentor research project, a suitable for processing large spiralbevel gear numerical control machine as the research object, on the NC machine toolstructure analysis and the common fault classification and analysis and statistics, based onfault tree analysis method to build the spiral bevel gear CNC machine fault tree, set up byAccess for spiral bevel gear NC machine tool fault diagnosis knowledge base, theapplication of VB6.0development of spiral bevel gear CNC machine fault diagnosissystem interface, to achieve quick realization of the spiral bevel gear CNC machine faultentry, query and fault diagnosis. The spiral bevel gear NC machine tool fault diagnosis expert system consists of knowledge base, inference engine, a database, human-computerinterface, knowledge acquisition components. According to the fault tree analysis methodthrough the establishment of NC machine tool fault tree layer search inference, basic mayrealize the access of phenomenon of breakdown diagnosis and reasoning to find out thecorresponding fault reason and solving method.