The process of switching from the production of one product or part number to another in a machine (e.g., a stamping press or molding machine) or a series of linked machines (e.g., an assembly line or cell) by changing parts, dies, molds, fixtures, etc. (Also called a setup.) Changeover time is measured as the time elapsed between the last piece in the run just completed and the first good piece from the process after the changeover (Marchwinski, Shook, & Schroeder, 2008).
Published in Chapter:
SMED: A Literature Review from 1985 to 2015
Jose Roberto Diaz Reza (Universidad de La Rioja, Spain), Deysi Guadalupe Márquez Gayosso (Universidad Autónoma de Ciudad Juárez, Mexico), Julio Blanco Fernández (Universidad de La Rioja, Spain), Emilio Jiménez Macías (Universidad de La Rioja, Spain), and Juan Carlos Sáenz Diez Muro (Universidad de La Rioja, Spain)
Copyright: © 2016
|Pages: 19
DOI: 10.4018/978-1-5225-0130-5.ch018
Abstract
Short changeover times have always been critical in manufacturing and are a necessity nowadays in all types of industries, due every wasted minute means inefficiency. Single Minute Exchange of Dies (SMED) is a methodology developed by Shigeo Shingo in 1985, which seeks to reduce the setup time of a machine to less than ten minutes (Shingo, 1985). It provides a rapid and efficient way of converting a manufacturing process from a current product that is been running in the production process, to the next product (Tharisheneprem, 2008), aimed always to decrease the setup time in industrial machinery, given flexibility in product and their characteristics. Through this research, we found that we can achieve some benefits through the implementation of the SMED methodology such as: the reduction of changeover time up to 90% with moderate investments (Cakmakci, 2009), reduce waste and increase quality, it makes low cost flexible operations possible.