Final opp/suply Ch 14 Flashcards
What is a lean operation
flexible system of operation that uses fewer resource( activities, people, inventory, and floor space) than a traditional system.
difference between a lean system and a nonlean system
lean systems (Just in time(JIT) systems) tend to achieve greater productivity, lower costs, shorter cycle times, and higher quality than nonlean systems
what are lean systems (just in time)
sistems owing to their highly coordinated activities and delivery of goods that occur just as they are needed
pioneered by toyotas founder Taiichi Ohno and Shigeo Shingo
- much faster and less costly way of producing automobiles
- both philosophy and methodology that focuses on eliminating waste and stremalining operations by closely coordinating all activities
what are the 3 basic elements of a lean system
they are demand drive, focus on waste reduction, and have a culture that is dedicated to excellence and continuous improvement
what is waste defined as in lean systems
anything that interfered with or did not add value to the process of producing automobiles
characteristics of lean systems
waste reduction- a hallmark of lean systems
use of teams- cross functional teams, especially for process improvement
contionus improvement- another hallmark: never-ending efforts to find better ways of doing work
visual controls- simple signal that enab;e efficient flow and quick assessment of operations
high wuality- in suppliers parts, in process and in output
minimal inventory- excess inventory is viewed as waste
output tied to demand- throughout the entire system: referred to as “demand pull”
quick changeovers- enabled equipment flexibility and output variety without disruption
small lot sized- enables variety for batch production
lean culture the entire organization embraces lean concepts and strives to achieve them
key benefits of lean systems
reduce waste
- lower cost due to waste and lower inventory
- increased quality motivated by customer focus and the need for high quality process
- reduced cycle time due to elimination of non-value-added process
risks of lean operations are
increased stress on workers due to increased responsibility for equipment changeovers, problem solving, and process and quality improvement
- fewer resources ( inventory, people, and time) are available if problems occur
- supply chain disruptions can halt operations due to minimal inventory or time buffers
Muda
waste
Kanban
a signal that says i need more or i am out and need more in a pull system
Kaizen
Continuous improvement of the system. There is always room for improvement, so this effort must be ongoing.
What is the ultimate goal of a lean balanced system?
Smooth rapid flow of materials and/or work through the system. Make the process time as short as possible by using resources in the best possible way.
Eliminate disruptions make the system flexible. Eliminate waste, especially excess inventory.
What Are the building blocks of a lean system
Product design
process design
personnel/organizational elements
Manufacturing planning and control.
What is the use of standard parts
Workers have fewer parts to deal with and training times and costs are reducedWorkers have fewer parts to deal with and training times and costs are reduced. Purchasing handling and checking quality are more routine and lend themselves to continual improvement.
What is modular design
An extension of standard parts Modules are clusters of parts treated as a single unit modular designs Greatly reduce the number of parts to deal with simplifying assembly purchasing handling training and so on. Standardization reduces the number of different parts contained in the bill of materials for various products thereby simplifying them.
