نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی صنایع، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران
2 گروه مهندسی صنایع، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران
3 گروه مهندسی صنایع، پردیس فنی مهندسی، دانشگاه یزد، یزد، ایران
4 گروه مهندسی صنایع؛ واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Analyzing critical failure modes and their effects is a method that involves establishing a series of links between failure modes, effects, and causes of failures. For this purpose, to identify and analyze the failure modes and effects on the spindle system of the C.N.C. lathe engine. The FMECA FUZZY method is provided to prevent unwanted failures in the spindle system and to perform its safe and reliable operation.The beginning of the boundaries of the system has been determined and according to the goals of the analysis, it has been divided into its components. The effects of each failure mode during one year for CNC machine spindle components and parts has been identified. Then, the severity of each failure was determined and corrective measures were determined. The number of failures identified using this method is 13. Based on the results, the highest value of damage severity is related to the part of the propeller spring, oil tank, and piston, which are marked with a severity number of 3. While, the lowest intensity of the effect is related to the contactor, encoder, and bearing with an intensity number of 1. In addition, the highest number of failures has been detected in the oil tank. In this article, a system for documenting failures and events to improve the safety level of the system and perform planned preventive maintenance and repairs to reduce the probability of failure and its consequences is presented, which can provide valuable information to unit planners in maintenance and repairs.
کلیدواژهها [English]