Glossary of Lean Terminology
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A Conceptual Model for Production Leveling (Heijunka) Implementation in Batch Production Systems
A Conceptual Model for Production Leveling (Heijunka) Implementation in Batch Production Systems Luciano Fonseca de Araujo and Abelardo Alves de Queiroz Federal University of Santa Catarina, Department of Manufacturing, GETEQ Research Group, Caixa Postal 476, Campus Universitário, Trindade, 88040-900, Florianópolis, SC, Brazil [email protected], [email protected] Abstract. This paper explains an implementation model for a new method for Production Leveling designed for batch production system. The main struc- ture of this model is grounded on three constructs: traditional framework for Operations Planning, Lean Manufacturing concepts for Production Leveling and case study guidelines. By combining the first and second construct, a framework for Production Leveling has been developed for batch production systems. Then, case study guidelines were applied to define an appropriate im- plementation sequence that includes prioritizing criteria of products and level production plan for capacity analysis. This conceptual model was applied on a Brazilian subsidiary of a multinational company. Furthermore, results evidence performance improvement and hence were approved by both manag- ers and Production personnel. Finally, based on research limitations, researchers and practitioners can confirm the general applicability of this method by applying it in companies that share similarities in terms of batch processing operations. Keywords: Batch Production, Heijunka, Implementation Model, Production Leveling. 1 Introduction Due intense competition, both traditional and emerging companies must improve existing methods for Operations Planning (OP). Indeed, Production Leveling im- proves operational efficiency in five objectives related to flexibility, speed, cost, qual- ity and customers’ service level [1], [6], [10]. Production Leveling combines two well known concepts of Lean Manufacturing: Kanban System and Heijunka. -
Process Improvement Glossary
Process Improvement Glossary 5 Whys Asking why repeatedly to discover the root cause of a problem. 5S A system for organizing the workplace to reduce waste and make problems visible. The 5S's: sort (keep only what is essential), set in order (a place for everything and everything in its place), shine (clean and tidy), standardize (systems and procedures to maintain first 3 S's), and sustain. A3 A standard, one-page description of the problem, hypothesis, and the improvement to be tested. It combines analysis of data and intuition, to present a compelling story in support of strategy deployment. The succinct format supports effective communication and use of data to problem-solve. The name comes from the "A3" size of paper (11"x17") that is used. Andon Japanese term for "lantern". Historically, a light system would alert someone of a quality or process problem in the production line. Today, a light may be triggered automatically, or an employee can manually alert the team and leadership of a problem. The intent is to alert the entire team, including leadership, that there is a problem so the team can respond and fix the problem before the workflow is stopped, if at all possible. ("The Machine That Changed the World" points out that there are hundreds of andon calls a day in a Toyota plant, but the line never stops. That is because workers respond to the Andons promptly, and usually are able to correct the problem within the tact time.) Bottleneck A step of a process that limits the capacity of a larger process or system. -
Lean Infographic
LEAN MANUFACTURING DEVELOPMENT TIMELINE Global competition Inception The rise of global competition begins with American domination of the internation auto market. Toyota Motor Corporation is Early developments in lean manufacturing center around automation, standardization of work and developetd in Japan, largely in response to low domestic sales developments in manufacturing theory. of Japanese automobiles. Lean manufacturing begins Henry Ford KIICHIRO TOYODA Alfred P. Sloan Ford GM 1913 first turns on his assembly 1921 visits U.S. textile 1923 becomes president of 1925 begins assembly in 1927 begins assembly in Japan, at with advancements in line, signaling a new era in factories to observe General Motors, institutes Japan, under their their subsidiary company, automation and year manufacturing year methods year organizational changes year subsidiary company, year GM-Japan interchangeability, dating back as far as the 1700s. 1924: Jidoka Coninuous flow Sakichi Toyoda perfects his automatic production leads to 15 million Kiichiro Toyoda loom and coins the term”Jidoka,” units of the Ford Model T over 15 owned a textile company, and actively meaning “machine with a human touch,” In the late 1920s and years sought ways to improve the manufacturing referring to the automatic loom’s ability to process 1930s, American detect errors and prevent defects. automaking dominates the global market, including the Japanese market. Ford and GM “A Bomber an Hour” expand operations Ford-run, government-funded Willow Run Bomber plant mass produces the -
Application of Lean Methodology to Improve Processes in the Construction and Demolition Waste Industry
Application of lean methodology to improve processes in the construction and demolition waste industry The Ambisider Case Study Mariana Marques Ribeiro Master in Civil Engineering Instituto Superior Técnico, Universidade de Lisboa, Portugal email: [email protected] Abstract – The construction industry is one of the largest consumers of natural resources and one of the main generators of construction and demolition waste (CDW). Thus, the incorporation of recycled aggregates in construction is fundamental in achieving sustainability, but this is only feasible if these are competitive in relation to new materials. Thus, lean management plays an important role in reaching efficiency of production processes within the CDW industry. This management paradigm, developed in the automotive industry, is currently one of the most used methodologies in improving production processes. This dissertation focuses on Ambisider, a Portuguese company of the construction sector that manages the CDW generated by the demolition worKs, it performs with the objective of increasing efficiency of the production process of recycled aggregates. The fundamental aim is to propose the implementation of improvement actions based on lean management following the DMAIC cycle (Define - Measure - Analyze - Improve - Control) methodology, an organized and sequential method for solving problems using various tools and methodologies from the six sigma management philosophy. The study of Ambisider recycling operations led to identify lean wastes, understand their root causes, and propose improvement strategies and respective forms of maintenance. The proposed improvements were designed in the future value stream mapping (VSM) showing improvements in production capacity, reduction of lead time and consequently improving the quality of aggregates, reducing production costs and increasing the organization level and competiveness of Ambisider. -
White Paper Entitled 'A Review of Kaizen'
MultiSpectra Consultants White Paper A Review of Kaizen Dr. Amartya Kumar Bhattacharya BCE (Hons.) ( Jadavpur ), MTech ( Civil ) ( IIT Kharagpur ), PhD ( Civil ) ( IIT Kharagpur ), Cert.MTERM ( AIT Bangkok ), CEng(I), FIE, FACCE(I), FISH, FIWRS, FIPHE, FIAH, FAE, MIGS, MIGS – Kolkata Chapter, MIGS – Chennai Chapter, MISTE, MAHI, MISCA, MIAHS, MISTAM, MNSFMFP, MIIBE, MICI, MIEES, MCITP, MISRS, MISRMTT, MAGGS, MCSI, MIAENG, MMBSI, MBMSM Chairman and Managing Director, MultiSpectra Consultants, 23, Biplabi Ambika Chakraborty Sarani, Kolkata – 700029, West Bengal, INDIA. E-mail: [email protected] Website: https://multispectraconsultants.com Kaizen is a concept referring to business activities that continuously improve all functions and involve all employees from the CEO to the assembly line workers. Kaizen ( 改 善 ) is the Sino- Japanese word for "improvement". Kaizen also applies to processes, such as purchasing and logistics, that cross organisational boundaries into the supply chain. By improving standardised programmes and processes, kaizen aims to eliminate waste (lean manufacturing). Kaizen was first practised in Japanese businesses after World War II, influenced in part by American business and quality-management teachers, and most notably as part of The Toyota Way. It has since spread throughout the world and has been applied to environments outside business and productivity. The Japanese word kaizen means "change for better", without inherent meaning of either "continuous" or "philosophy" in Japanese dictionaries and in everyday use. The word refers to any improvement, one-time or continuous, large or small, in the same sense as the English word "improvement". However, given the common practice in Japan of labelling industrial or business improvement techniques with the word "kaizen", particularly the practices spearheaded by Toyota, the word "kaizen" in English is typically applied to measures for implementing continuous improvement, especially those with a "Japanese philosophy". -
Five Whys Analysis
Five Whys Analysis Source: http://www.gnrtr.com/Generator.html?pi=141&cp=3 In solving an inventive problem, it is very important to understand the casual relation of phenomena taking place in a system... In solving an inventive problem, it is very important to understand the casual relation of phenomena taking place in a system. Constructing such chains is a very interesting process which sometimes yields completely unexpected results. The following story is popular in the engineering environment. Auxiliary engines of one of the first American spaceships had 5 ft in diameter although, according to the designers' calculations, their optimal diameter should have been a little larger. # 1. Why were the engines made with 5 ft diameter ? The limitation was caused by that the engines were delivered to the assembly site by railway which went through several tunnels. The distance between the rails was standard – 4 ft and 8.5 and the tunnel diameter was not much larger. #2. Why the standard distance between rails was 4 ft and 8.5? How did that figure arise? The American railway was designed after the English pattern. In England, in turn, the distance between rails was selected by analogy with the tram track which was just 4 ft and 8.5. But why? The thing is that first trams in England were produced at the same factory as horse- drawn vehicles. The distance between the wheels of such a vehicle was 4 ft and 8.5. # 3. Why ? Horse-drawn vehicles were made so that their wheels matched old ruts on roads and the distance between the ruts was 4 ft and 8.5 all over England. -
Techniques to Deploy Lean Concept: a Review
International Journal of Enhanced Research in Science Technology & Engineering, ISSN: 2319-7463 Vol. 3 Issue 8, August-2014, pp: (117-136), Impact Factor: 1.252, Available online at: www.erpublications.com Techniques to deploy lean concept: A Review Narottam1, Sachin Kumar2, Dr. K. Kumar3, Naveen Kumar4 1,2Dept. of M.E., Bhiwani Institute of Technology and Sciences, Bhiwani, Haryana, India 3Former Director, Maruti Suzuki India Ltd., Lean Consultant. 4Counselor MACE, Maruti Suzuki India Ltd. Abstract Purpose: Lean manufacturing concept is most important to be used in an automobile industry system for reduction in the waste, which decreases the yield. The techniques used for implementing Lean concept are helpful to find the waste throughout the industry and suggest the techniques to get rid of from that waste. By these techniques without using much cost and labor we can reduce waste producing in the process. In this context, this study is an attempt to remove the roadblocks in implementing Lean concept in Indian automobile industry. Design/Methodology/Approach: Various tools and techniques have been identified from the literature review. The various roadblocks have been identified through the study and the responses from the experts on the Lean Implementation. The model consists of six major lean tools, which are Policy Deployment, Visual Management, Continuous Improvement, Standardized Work, Just in Time, and Value Stream Mapping and the other tools and methods which fall within such as 5s, TPM, and A3 thinking. Findings: Twenty four variables have been identified from the literature review. Out of which six major lean tools are identified for successful lean implementation. -
Top Four Problem-Solving Techniques in a High Performance Team
4360 Corporate Road Charleston, SC 29405-7445 843.744.7110 www.LCE.com Top Four Problem-Solving Techniques in a High Performance Team By R. Keith Mobley While most people associate Lean with tools and principles such as value stream mapping, one-piece flow, Kanban, 5S, Total Productive Maintenance, and Kaizen events, few people think about the more mundane aspects of Lean. Problem solving is one of the keys to a successful Lean implementation because it empowers all those involved. Lean manufacturing has a unique way of solving problems. It does not just look at the effect of the problem and try to cover it with a Band-Aid. Rather the root cause of the problem is identified and the root cause, as well as all contributing factors, is eliminated from the system, process or infrastructure in order to permanently solve the problems. What is the difference in these two approaches? Simple, when you find and rectify the root causes the problem will be solved forever. Even other problems occurring due to these root causes will be eliminated in this effort. It is very clear now that we must find out the root causes of the problems before we think about rectifying them in Lean manufacturing environments. So how should we do this? What are the tools available to perform these tasks? Let's look at what problem solving is about. We'll begin by asking the question: "What is a problem?" A good definition of a problem is a variation from a recognized standard. In other words, you need to know how things should be before you can recognize a possible cause for them not being that way. -
Production Leveling System Implementation at Mixed Model Product with Heterogeneous Cycle Time for Single Operation Line
INTERNATIONAL JOURNAL OF INTEGRATED ENGINEERING VOL. 13 NO. 2 (2021) 196-201 © Universiti Tun Hussein Onn Malaysia Publisher’s Office The International Journal of IJIE Integrated Journal homepage: http://penerbit.uthm.edu.my/ojs/index.php/ijie Engineering ISSN : 2229-838X e-ISSN : 2600-7916 Production Leveling System Implementation at Mixed Model Product with Heterogeneous Cycle Time for Single Operation Line A.N. Adnan1*, A. Ismail1 1Mechanical Engineering Faculty, Universiti Teknologi MARA, Johor Branch, Johor, MALAYSIA *Corresponding Author DOI: https://doi.org/10.30880/ijie.2021.13.02.022 Received 1 January 2020; Accepted 3 December 2020; Available online 28 February 202 Abstract: Production leveling is one of the main lean manufacturing principles which aims to enhance production performance and optimize operation cost. Systematic and level production of process for mixed model product is presented to study manufacturing parameter results. A required production time was synched in leveling system approach to avoid non-value-added item such as excess inventory and poor planning in production space. A few parameters were used to measure the performance of production leveling system implementation. Proper establishment production leveling schedule gained good results for manufacturers who were committed to the implementation. The most significant production area and productivity were due to balanced capacity according to actual demand. The conclusion and recommendation regarding potentials of efficient implementation were presented in a demonstration of production leveling system at mixed model product at single operation line. Keywords: Production leveling, level production scheduling, smooth flow manufacturing 1. Introduction Intense competition among manufacturers has grown and increased significantly. Uncertain demand situation as well as dynamic consumer expectations have pressured manufacturers to seek systematic and efficient techniques in handling the environment. -
REST Journal on Emerging Trends in Modelling and Manufacturing 3(1) 2017, 12-16
Mayank. et.al / REST Journal on Emerging trends in Modelling and Manufacturing 3(1) 2017, 12-16 REST Journal on Emerging trends in Modelling and Manufacturing Vol:3(1),2017 REST Publisher ISSN: 2455-4537 Website: www.restpublisher.com/journals/jemm A Review of Lean Tools & Techniques for Cycle Time Reduction Mayank Pandya1, Vivek Patel2, Nilesh Pandya3 1,2G H Patel College of Engineering & Technology, V.V.Nagar-388120, Gujrat,India 3Foundry manager at Priti Marine PVT. LTD., Sihor, Dist. Bhavnagar, Gujarat, India [email protected], [email protected], [email protected] Abstract In today’s enormous competitive world, in order to survive in the market, any company has to satisfy their customers by providing right quantity with right quality and right price within stipulated time. All small scale industries facing problems in fulfilling customers demand within stipulated time period. In this paper the prime focus is various lean tools & techniques with their principles of application. There are many ideas and tools to explore in lean, so the one way is to do survey of some most important lean tools and its principles. This paper contains review of various lean tools and techniques such as 5S, Heijunka, SMED, Kaizen, PDCA, Takt time, TPM, and also about which tool can give better results for cycle time reduction also described with the help of literature review. Key words: lean tools & techniques, 5S, Heijunka, SMED, Kaizen, PDCA, Takt Time, TPM I. Introduction In Today’s Competitive era of globalization, in order to strive in this competitive market situation, companies now must look forward to please their customers in every possible manners and must complete customer’s ordered requirements within the stipulated time period which is given by customers. -
Glossary of Lean Terminology
Glossary of Lean Terminology Lean Term Definition Use 6S: Used for improving organization of the Create a safe and workplace, the name comes from the six organized work area steps required to implement and the words (each starting with S) used to describe each step: sort, set in order, scrub, safety, standardize, and sustain. A3 thinking: Forces consensus building; unifies culture TPOC, VSA, RIE, around a simple, systematic problem solving methodology; also becomes a communication tool that follows a logical narrative and builds over years as organization learning; A3 = metric nomenclature for a paper size equal to 11”x17” Affinity A process to organize disparate language Problem solving, Diagram: info by placing it on cards and grouping brainstorming the cards that go together in a creative way. “header” cards are then used to summarize each group of cards Andon: A device that calls attention to defects, Visual management tool equipment abnormalities, other problems, or reports the status and needs of a system typically by means of lights – red light for failure mode, amber light to show marginal performance, and a green light for normal operation mode. Annual In Policy Deployment, those current year Strategic focus Objectives: objectives that will allow you to reach your 3-5 year breakthrough objectives Autonomation: Described as "intelligent automation" or On-demand, defect free "automation with a human touch.” If an abnormal situation arises the machine stops and the worker will stop the production line. Prevents the production of defective products, eliminates overproduction and focuses attention on understanding the problem and ensuring that it never recurs. -
Lean Manufacturing
8 Lean manufacturing Lean manufacturing, lean enterprise, or lean production, often simply, "Lean", is a production practice that considers the expenditure of resources for any goal other than the creation of value for the end customer to be wasteful, and thus a target for elimination. Working from the perspective of the customer who consumes a product or service, "value" is defined as any action or process that a customer would be willing to pay for. Essentially, lean is centered on preserving value with less work. Lean manufacturing is a management philosophy derived mostly from the Toyota Production System (TPS) (hence the term Toyotism is also prevalent) and identified as "Lean" only in the 1990s. TPS is renowned for its focus on reduction of the original Toyota seven wastes to improve overall customer value, but there are varying perspectives on how this is best achieved. The steady growth of Toyota, from a small company to the world's largest automaker, has focused attention on how it has achieved this success. 8.1 Overview Lean principles are derived from the Japanese manufacturing industry. The term was first coined by John Krafcik in his 1988 article, "Triumph of the Lean Production System," based on his master's thesis at the MIT Sloan School of Management. Krafcik had been a quality engineer in the Toyota-GM NUMMI joint venture in California before coming to MIT for MBA studies. Krafcik's research was continued by the International Motor Vehicle Program (IMVP) at MIT, which produced the international best-seller book co-authored by Jim Womack, Daniel Jones, and Daniel Roos called The Machine That Changed the World.] A complete historical account of the IMVP and how the term "lean" was coined is given by Holweg (2007).