Pull Prod./front matter 4/17/2002 3:42 PM Page i Pull Production for the Shopfloor Pull Prod./front matter 4/17/2002 3:42 PM Page ii SHOPFLOOR SERIES Pull Prod./front matter 4/17/2002 3:42 PM Page iii Pull Production for the Shopfloor CREATED BY The Productivity Press Development Team Productivity Press • New York CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2002 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works Version Date: 20130222 International Standard Book Number-13: 978-1-4665-3030-0 (eBook - Kindle) This book contains information obtained from authentic and highly regarded sources. Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the valid- ity of all materials or the consequences of their use. The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint. Except as permitted under U.S. Copyright Law, no part of this book may be reprinted, reproduced, transmitted, or uti- lized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopy- ing, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers. For permission to photocopy or use material electronically from this work, please access www.copyright.com (http:// www.copyright.com/) or contact the Copyright Clearance Center, Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400. CCC is a not-for-profit organization that provides licenses and registration for a variety of users. For organizations that have been granted a photocopy license by the CCC, a separate system of payment has been arranged. Trademark Notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe. Visit the Taylor & Francis Web site at http://www.taylorandfrancis.com and the CRC Press Web site at http://www.crcpress.com Pull Prod./front matter 4/17/2002 3:42 PM Page v Contents Publisher’s Message ix Getting Started xi The Purpose of This Book xi What This Book Is Based On xi Two Ways to Use This Book xii How to Get the Most Out of Your Reading xii An Overview of the Contents xiv Chapter 1. Choosing Pull Production 1 The Context for Pull Production 2 What Is Pull Production? 4 Two Aspects 4 Pull versus Push 4 The Challenges of Production 5 The Problem of Forecasting Customer Demand 5 Small-Lot, Wide-Variety Production 5 Cost Reduction 6 Waste 7 When Pull Might Not Be the Goal 7 The Prerequisites of Pull Production 8 An Awareness of Waste and Commitment to the Principles of Continuous Improvement 8 Team-Based Improvement Activities 8 Process Measures 8 5S—Visual Order, Displays, and Signals 8 Quick Changeover Activities 9 A Multi-Task Trained Workforce 9 Cell Design 9 v Pull Prod./front matter 4/17/2002 3:42 PM Page vi CONTENTS The Benefits of Pull Production 11 Company Benefits 11 Individual Benefits 11 In Conclusion 12 Summary 12 Reflections 13 Chapter 2. Understanding and Preparing for Pull Production 15 Approaches to Production Management 16 What Is Production Management? 16 What Is the Significance of Lead Time? 17 How Does Lean Production Impact Lead Time? 19 The Problem with Stock and Overproduction 21 Why Does Inventory Accumulate? 21 Why Is Inventory Bad? 22 Push versus Pull Production 24 Production Is Music 25 The Next Process Is Your Customer 26 Stop and Go versus Process and Go Production 27 What Is Flow Production? 28 The Value Stream 28 Seven Requirements for Flow 29 Leveling 30 Implementation Sequence 30 In Conclusion 32 Summary 32 Reflections 34 Chapter 3. Implementing Pull Production 35 The Improvement Infrastructure 36 Key Roles 36 The Promotion Office 37 Improvement Days 37 Improvement Meetings 37 An Improvement List 38 vi Pull Prod./front matter 4/17/2002 3:42 PM Page vii CONTENTS The Factory Floor 38 Kaizen Events 38 Five Steps to Pull Production 39 Step One: Identify the Current Process 39 Step Two: Co-Locate Equipment in Sequence 40 Step Three: Design Manufacturing Cells 42 Step Four: Initiate the Kanban System 46 Step Five: Shift to One-Piece Flow 47 Level Production 48 Shish-Kabob Production 49 Takt Time 50 The Load Leveling Box 51 Line Balancing 51 Cross-Training 53 Quality Systems 53 Levels of Quality 53 Errors versus Defects 54 In Conclusion 55 Summary 55 Reflections 57 Chapter 4. Managing Pull Production 59 The Rules of Pull Production with Kanban 60 Feedback with the Kanban System 60 Functions of Kanban 61 Types of Kanban 63 How the Kanban System Works 64 How Many Kanban Do You Need? 65 An Analysis of Pull Production 66 When Do You Pull? 66 Where Do You Pull From? 66 What Do You Pull? 67 What Do You Produce? 68 One-Stage versus Two-Stage Pull Systems 69 Supermarkets 69 Water Beetles and Milk Runs 70 vii Pull Prod./front matter 4/17/2002 3:42 PM Page viii CONTENTS In Conclusion 73 Summary 73 Reflections 75 Chapter 5. Extending Pull Production 77 Establishing One-Piece Flow Production 78 Seven Conditions for Flow 79 Steps to Achieve One-Piece Flow 80 Using Moving Lines and Feeder Cells 81 Linking Suppliers to the Pull System 83 Changes in Transport Methods 83 Changes in Delivery Sites 85 Supplier Kanban 87 Buffers 89 Challenges, New Thinking, and Success Factors 90 In Conclusion 91 Summary 91 Reflections 93 Chapter 6. Reflections and Conclusions 95 A Summary of Pull Implementation 96 Reflecting on What You’ve Learned 97 Opportunities for Further Learning 98 Conclusions 98 Additional Resources Related to Pull Production 99 Books and Videos 99 Newsletters 101 Training and Consulting 101 Website 101 About the Productivity Development Team 102 viii Pull Prod./front matter 4/17/2002 3:42 PM Page ix Publisher’s Message Pull Production for the Shopfloor is the fourteenth book to be published in the Shingo Prize-winning Shopfloor Series by Productivity Press. We have presented books on 5S, cellular manufacturing, quick changeover, mistake-proofing, just-in-time, kaizen, kanban, and several on TPM (including autonomous maintenance, focused equipment improvement, and overall equipment effectiveness). When you implement pull production, the various lean methodologies you have already learned and implemented unite to become a powerful totality for achieving and sustaining lean manufacturing. Before implementing pull production, you will want to have achieved a solid level of profi- ciency in several lean methods. But once you are ready for pull, this book will give you the process for getting there, and will present it to you in an easy-to-read-and-assimilate format. Throughout the book, you will be asked to reflect on questions to help you apply pull implementation to your workplace. Numerous illustrations will reinforce the text. The introductory section, “Getting Started,” will suggest reading and learning strategies, explain the instructional format of the book, and give an overview of each chapter. Chapter 1 presents the context for choosing pull production. To help you under- stand and prepare for pull, Chapter 2 discusses production man- agement, stock and overproduction, push versus pull, and the requirements for achieving flow production. Chapter 3 tells how to establish an improvement infrastructure and takes you through the pull implementation process, step by step. Chapter 4 explains how to manage pull production with the kanban system. Chapter 5 discusses one-piece flow and advises how to bring suppliers into your pull process. Finally, a summary of the phases for implementing pull and resources for further learning are presented in Chapter 6. In today’s market, manufacturing companies will not survive with- out the ability to manage wide-variety, small-lot production while keeping costs down. Pull production gives you that capability. This book will show you how to bring your various lean efforts together to achieve pull production. ix