Wood Machining

J. Paulo Davim is an aggregate professor of the Department of Mechanical Engineering at the University of Aveiro in Portugal.

Preface xi

Chapter 1. Machining of Wood and Wood Composites 1
Grzegorz KOWALUK

1.1. Introduction 1

1.2. Wood and wood-based composites 2

1.3. Approach to cutting 7

1.4. Main techniques of machining 11

1.5. Problems of machining wood and wood composites – a review 19

1.6. Into the future – further scenarios of wood and wood composites machining 21

1.7. Acknowledgement 23

1.8. Bibliography 24

Chapter 2. Wood and Wood-based Panel Machining Quality 27
Cristina COELHO, Nuno GARRIDO, Jorge MARTINS, Luisa CARVALHO and Carlos COSTA

2.1. Solid wood machining 27

2.2. Wood-based panels machining 39

2.3. Surface quality 50

2.4. Case study: solid wood machining and surface quality evaluation 65

2.5. Case study: particleboard machining and edge quality evaluation 73

2.6. Bibliography 75

Chapter 3. Reducing Tool Wear by Cryogenic Treatment and Cooling with Refrigerated Air when Processing Medium Density Fiberboard 83
Rado GAZO, Judith GISIP and Harold A. STEWART

3.1. Introduction 83

3.2. Effects of refrigerated air 85

3.3. Effects of cryogenic treatment and refrigerated air 98

3.4. Acknowledgements 111

3.5. Bibliography 111

Chapter 4. Wearing Mechanisms Contributing to Reduced Tool Life after Wood and Secondary
Wood Products Machining 115
Boles?aw PORANKIEWICZ

4.1. Introduction 116

4.2. Cutting edge-material cut interface 116

4.3. TGA indirect evidence of HTTR 119

4.4. Theoretical QC analysis of HTTR 134

4.5. Investigations of direct evidence of HTTR 140

4.6. Cutting edge SEM image examinations 143

4.7. Synergistic effect of high temperature reactions and mechanical wear 146

4.8. Final remarks 150

4.9. Conclusions 154

4.10. Acknowledgements 155

4.11. Bibliography 155

Chapter 5. Monitoring Surface Quality on Molding and Sawing Processes for Solid Wood and Wood Panels 159
Alfredo AGUILERA

5.1. Introduction 159

5.2. General concepts 160

5.3. Monitoring the cutting process 176

5.4. Surface roughness and quality for solid wood and panels 190

5.5. Concluding remarks 210

5.6. Acknowledgements 211

5.7. Bibliography 211

Chapter 6. Evaluating the Roughness of Sanded Wood Surfaces 217
Lidia GURAU, Hugh MANSFIELD-WILLIAMS and Mark IRLE

6.1. Introduction 217

6.2. Profile filtering applied to wood surfaces 228

6.3. A proposed method for separating processing roughness from anatomical roughness 246

6.4. A case study: the processing roughness of oak surfaces sanded with various grit sizes 250

6.5. Concluding remarks 259

6.6. Perspectives 260

6.7. Acknowledgements 261

6.8. Bibliography 261

List of Authors 269

Index 273

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