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Model of Remote Service and Intelligent Fault Diagnosis for CNC Machine Tool  

Kim, Sun-Ho (Automation Eng., KIMM)
Kim, Dong-Hoon (Automation Eng., KIMM)
Han, Gi-Sang (TurboTek Co., Ltd)
Kim, Chan-Bong (TurboTek Co., Ltd)
Publication Information
Journal of the Korean Society for Precision Engineering / v.19, no.4, 2002 , pp. 168-178 More about this Journal
Abstract
The CNC machine toots has two kinds of fault. One is the fault due to degraded parts and the other is the fault due to operation disability. The phenomena of degradation is predictable but the operational fault is unpredictable because it occurred without any warning. The major faults of CNC machine tool are operational faults which are charged over 70%. This paper describes the model of remote service and the intelligent fault diagnosis system to diagnosis operational faults of CNC machine tools. To generalize fault diagnosis, two diagnosis models such as SF(Switching Function) and SSF(Step Switching Function) are proposed. The SF is static model and SSF is dynamic model for expression of fault. The SF and SSF model can be generated using SFG(Switching Function Generator) which is developed in this research. The three major operational faults such as emergency stop error, cycle start disability and machine ready disability are applied to experiment of fault modeling. To remote service of faults fur CNC machine tool, the web server and client system based internet are proposed as the suitable environment. The developed two technologies are implemented with the internal function of open architecture controller. The implemental results for two technologies are presented to validate the proposed scheme.
Keywords
CNC; Fault Diagnosis; Remote Service; Internet; Switching Function Model; Step Switching Function Model; Switching Function Generator;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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