مقایسهٔ روش‌ها

	SMED	نگهداری و تعمیرات مولد کل (Total Productive Maintenance)
حوزه	مدیریت عملیات	مدیریت عملیات
خانواده	Machine learning	Machine learning
سال پیدایش	1985	1988
پدیدآور	Shigeo Shingo	Seiichi Nakajima
نوع	Setup time reduction technique	Maintenance and productivity system
منبع بنیادین	Shingo, S. (1985). A revolution in manufacturing: The SMED system. Cambridge, MA: Productivity Press.	Nakajima, S. (1988). Introduction to TPM: Total Productive Maintenance. Cambridge, MA: Productivity Press.
نام‌های دیگر	quick changeover, rapid setup	TPM
مرتبط	5	5
خلاصه	Single Minute Exchange of Die (SMED) is a systematic approach developed by Shigeo Shingo in the 1980s to drastically reduce the time required to changeover equipment from producing one product to another. The methodology, part of the Toyota Production System, aims to reduce setup time to a single-digit minute range (ideally under nine minutes), enabling smaller batch sizes, faster response to customer demand, and improved flexibility in manufacturing. SMED is a cornerstone of lean manufacturing and just-in-time production.	Total Productive Maintenance (TPM) is a comprehensive maintenance management approach developed by Seiichi Nakajima in the late 1980s that emphasizes employee involvement, preventive maintenance, and continuous improvement to maximize equipment effectiveness. Unlike traditional reactive maintenance, TPM integrates maintenance activities across all organizational levels—from operators to executives—and focuses on eliminating losses (downtime, defects, speed losses) to achieve sustained production efficiency, quality, and safety.