Cover image for Achieving lean changeover : putting SMED to work
Title:
Achieving lean changeover : putting SMED to work
Personal Author:
Publication Information:
Boca Raton, F.L. : CRC Press, c2013.
Physical Description:
xv, 189 p. : ill. ; 26 cm.
ISBN:
9781466501744

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32000000000178 TS155 H384 2013 Open Access Book Book
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Summary

Summary

Defined as the total process of converting a line or process from one product to another, changeover will not only help your organization improve quality and flexibility, but it will save thousands and sometimes even tens of thousands of dollars per hour.

Achieving Lean Changeover: Putting SMED to Work is about the practical implementation of the single minute exchange of die (SMED) philosophy developed by Shigeo Shingo at Toyota. Although the book is principally about changeover of manufacturing, packaging, and assembly processes, the general concepts and examples are also applicable in lighter industries that require turnover of processes--including airlines, hospitals, operating rooms, and food service.

Filled with practical examples, the book shares proven methods that can help you convert changeover downtime to productive uptime. It explains why reducing changeover time is important financially and provides a structured methodology to help you identify and implement improvement opportunities.

The author addresses both the machinery issues with changeover/ SMED and the associated operational issues such as costs, waiting times, material movement, documentation, and product/component design. He also devotes a chapter to discussing, in detail, how to calculate the cost of changeover downtime, an area that remains a mystery to many.

Taking a holistic approach to changeover, the text includes a chapter devoted to organizing changeover improvements, keeping them on track, and developing and implementing a formal changeover reduction program. Presenting time-tested methods and practical examples from a variety of industries, it offers you the opportunity to reduce changeover time and cost and provide your organization with the flexibility needed to better satisfy your customers in three important dimensions: product variety, responsiveness, and price.


Author Notes

John Henry is widely known as the Changeover Wizard for his work in making changeover time disappear. His company, Changeover.com, has assisted many companies in a wide variety of packaging, assembly, processing, and other manufacturing industries since its founding in 1996.

After a nearly eight-year stint in the US Navy, John went to work for Alcon Laboratories as maintenance supervisor, eventually rising to manager of Facility Operations. He left to purchase Automation Sales, a company dedicated to the design, sale, installation, and service of automated packaging, assembly, and manufacturing machinery.

In the early 1990s, John realized that changeover was not a necessary evil and could be improved. He began helping some of his machinery clients and Changeover.com was born. Since then, Changeover.com has provided training and consulting assistance internationally to a variety of companies in a variety of industries.

John Henry has master's degrees in industrial management, interpersonal relations, and business education. John has been a classroom and online adjunct instructor at the Southern New Hampshire University Graduate School of Business since 1982. He teaches packaging technology at the Polytechnic University of Puerto Rico.

John has published many articles in the industry press and is a frequent speaker at national packaging conferences. He was previously a contributing writer for Food & Beverage Packaging magazine. He is currently a contributing writer for Packaging Digest. John's other books include Machinery Matters (2011) and The Handbook of Packaging Machinery (in press).

John may be contacted at johnhenry@changeover.com. He is always interested in discussing changeover.


Table of Contents

Prefacep. ix
Acknowledgmentsp. xiii
About the Authorp. xv
1 Introductionp. 1
Definitionsp. 3
Changeoverp. 3
The 3 Upsp. 4
Changeover Timep. 7
Downtimep. 7
Qualityp. 9
Importance of Changeoverp. 10
Pit Stopsp. 12
History of Changeoverp. 14
Tactic or Strategy?p. 16
The ESEE Conceptp. 17
2 Changeover Costsp. 19
Knowing Your Costs Is Criticalp. 19
WIIFMp. 20
Tangible Costs of Changeoverp. 22
Lost Productionp. 22
Lost Capacityp. 23
Reducing Changeover Times Creates Additional Capacityp. 23
Impact on Inventoryp. 23
Labor Costsp. 26
Product and Material Lossesp. 28
Intangible Costsp. 28
Response to the Customerp. 28
Capacity Utilizationp. 29
Qualityp. 30
Stress on People, Machines, and Systemsp. 30
Reduced Innovationp. 30
Conclusionp. 31
3 Standard Operating Proceduresp. 33
Cleaning Is Inspectingp. 39
Graphical SOPsp. 41
Writing the SOPp. 42
Electronic SOPsp. 45
Conclusionp. 47
4 Eliminatep. 49
Product Designp. 49
Documentationp. 52
Quality Clearancep. 52
Schedule Production Weak to Strongp. 53
Building Designp. 54
Separate Clean and Dirtyp. 55
Don't Clean Unused Equipmentp. 55
Batch Versus Continuous Processingp. 55
Label Positionp. 56
Camp. 58
Laddersp. 59
Quick Connectorsp. 60
Pucksp. 62
Servo Motorsp. 64
Machine Coversp. 65
Eliminate Conveyor Rail Adjustmentp. 66
Multiple Photoeyesp. 67
Kit Manufacturingp. 68
Preset Timing Adjustmentsp. 69
Movable Motor Mountsp. 70
Sprockets and Gearsp. 71
Conclusionp. 73
5 Simplifyp. 75
Smooth Surfaces for Cleaningp. 75
Washroomp. 77
Dryingp. 80
Conveyorsp. 84
Machine Cabinetsp. 86
Clean-in-Placep. 86
Pigsp. 87
Toolsp. 88
No Toolsp. 90
Hand Knobs and Leversp. 92
Quick-Acting Knobs and Leversp. 93
Spring-Lock Collarp. 95
Pinsp. 96
Snapsp. 98
Magnetic Lockingp. 99
Vacuum Mountingp. 99
Toolless Plunger Mountp. 100
Quarter-Turn Fastenersp. 101
Tool Changersp. 102
Toggle Clampsp. 103
Conical Cylinder Locksp. 104
Interrupted Threadsp. 105
Slots and Keyholesp. 106
C Washersp. 108
One-Touch Guide Rail Adjustmentp. 109
Single-Point Adjustment (Double Lead Screw)p. 112
Captive Washersp. 113
Unitary Lane Spacersp. 114
Asymmetric Partsp. 115
Scissor Jacksp. 115
Changepart Identificationp. 116
Conclusionp. 117
6 Externalizep. 119
Material Handlingp. 120
Changepart and Tool Handlingp. 122
Standardized Componentsp. 129
Pre-heatingp. 130
Duplicate Componentsp. 131
Clean-in-Placep. 136
Dual Rollstandsp. 137
Testingp. 139
Conclusionp. 140
7 Executep. 141
Speedp. 145
Positioningp. 146
Scribe Marksp. 146
Scalesp. 147
Gaugesp. 152
Thickness Gaugep. 152
Leaf Gaugep. 155
Digital Indicatorsp. 156
Micrometer Adjustersp. 159
Adjusting Stops and Jacking Screwsp. 160
Use the Forcep. 161
Conclusionp. 162
8 Develop and Implement a Programp. 163
Process or Project?p. 164
Forming the Teamp. 166
Starting the Teamp. 169
Who Performs Changeovers?p. 171
Getting to Workp. 174
Conclusionp. 177
Appendixp. 179
Indexp. 183