There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

Publisher's Preface Foreword Introduction PART ONE: THEORY AND PRACTICE OF THE SMED SYSTEM 1. The Structure of Production 2. Setup Operations in the Past 3. Fundamentals of SMED 4. Techniques for Applying SMED 5. Applying SMED to Internal Operations 6. Basic Examples of SMED 7. Effects of SMED PART TWO: THE SMED SYSTEM -- CASE STUDIES 8. Implementing SMED Matsushita Electric Industrial Co., Ltd., Washing Machine Division (Mikuni Plant) 9. Setup Improvements Based on the Toyota Production System Toyoda Gosei Co., Ltd. 10. A Quick-Setting ("Q-S") Campaign Nippon Kogaku K.K. (Oi Plant) 11. Using SMED on a Farm Machinery Processing Line Kubota, Ltd. (Sakai Plant) 12. Setup Improvements Based on Shop Circle Activities Toyota Auto Body Co., Ltd. 13. Comprehensive Development of the SMED Concept to Include Affiliated Plants Arakawa Auto Body Industries K.K. 14. SMED Developments in Producing Slide Bearings T.H. Kogyo K.K. 15. Examples and Effects of the SMED System Glory Industries K.K. 16. Achievement of SMED Through Company-Wide Activities Kyoei Kogyo K.K. 17. SMED in Tire Manufacturing Processes Bridgestone Tire Co., Ltd. 18. Using SMED for Aluminum Die-Casting Dies Tsuta Machine and Metals Co., Ltd. 19. The Shingo One-Touch Die Exchange System: The Boltless Method Postscript About the Author Index

A revolution in manufacturing : the SMED system

Recent development trends in metal forming

http://www.dl.edi-info.ir/The%20Main%20Aspects%20of%20Precision%20Forging.pdf

The main aspects of precision forging

Review of selected methods of increasing the life of forging tools in hot die forging processes

A review of the degradation mechanisms of the hot forging tools

This paper describes the phenomena taking place on the surface of the dies used for hot forging. Because of this paper’s limited space only changes in the tool surface layer during the forging of a gear wheel, as most representative, are presented. Similar changes were observed in the case of the other two investigated closed die forging processes, i.e. the forging of a cover and a yoke, respectively. The research was aided by FEM, which supplied a lot of information about the forging conditions. The most intensive wear of the tools occurs in the place of their longest contact with the material being forged, regardless of the number of produced forgings. The research has shown that the one of the most adversely factor affecting the investigated forging process is thermomechanical fatigue which results in fine cracks quickly developing into a network of cracks extending over the entire tool/forged material contact surface. Also the abrasive wear of the investigated die is high due to the intensive flow of the material in the presence of abrasive oxide particles and tools bits created by thermomechanical fatigue. An attempt to model the abrasive wear using the Archard model is presented.

Marek Hawryluk

Papers

The main aspects of precision forging

Review of selected methods of increasing the life of forging tools in hot die forging processes

A review of the degradation mechanisms of the hot forging tools

The failure mechanisms of hot forging dies

Analysis of forging defects for selected industrial die forging processes