MECHANICS OF WOOD MACHINING

Description

Foreword Preface to the Third Edition Preface to the Previous Edition Contents 1 Mechanics of the Cutting Process 1.1 Introduction 1.2 Definitions and Notations 1.3 Mechanics of Cutting 1.3.1 Force and Stress Relations 1.3.2 The Cutting Force 1.3.3 Chip Deformation 1.3.4 Chip Deformation with Plastic Flow 1.3.5 The Radial Cutting Force 1.4 Mechanics of Oblique Cutting 1.5 Mechanics of Bundle Clipper 1.6 Mechanics of the Pressure Bar 1.7 Comminution of Wood with Hammer Mill 1.7.1 Mechanism of Comminution 1.7.2 General Relationships for Hammer Mills Literature 2 Thermal Loading in Cutting Tools 2.1 Introduction 2.2 Heat Generation in the Contact Surfaces 2.3 Boundary Conditions 2.4 The Temperature of the Tool in Different Operating Conditions 2.5 Temperature Gradient Literature 3 Operating Parameters of Wood Cutting Tools 3.1 Introduction 3.2 The Bandsaw 3.3 The Frame Saw 3.4 The Circular Saw 3.5 Milling and Planing Machines 3.6 Edge Machining 3.7 Drills 3.8 Veneer Cutting and Peeling 3.9 Sanding Literature 4 The Energy Requirement of Cutting 4.1 Introduction 4.2 Theoretical Considerations 4.3 The Energy Requirements of Bandsaw 4.4 The Energy Requirements of Frame-Saw 4.5 The Energy Requirements for Planing and Milling 4.6 Energy Requirements of Circular Saws 4.7 Energy Requirement of Sanding 4.8 Generalized Relationships for Energy Requirement Literature 5 Vibration of the Tools and Workpieces 5.1 Introduction 5.2 Band Saw Vibration 5.3 The Vibrations of Circular Saws 5.4 Washboarding 5.5 The Vibrations of the Workpiece 5.6 Pneumatic Clamping of a Workpiece Literature 6 The Stability of Wood Working Tools 6.1 Introduction 6.2 Cutting Accuracy 6.3 Blade Tensioning 6.4 The Stability of the Band Saw 6.5 Band Saw Tracking Stability 6.6 Stability of Circular Saws 6.7 Frame Saw Stability Literature 7 Tool Wear 7.1 Introduction 7.2 Edge Profile and Change in Cutting Force 7.3 The Major Tool Wear Mechanisms 7.4 Factors Affecting Wear 7.4.1 Tool Properties 7.4.2 Workpiece Properties 7.4.3 Operational Parameters Literature 8 Surface Roughness 8.1 Introduction 8.2 Measurement Methods 8.3 Parameters of Surface Roughness 8.4 Internal Structure of Wood and Its Characterization 8.5 The Origin of Surface Roughness 8.6 Effects of Machining Process on Surface Roughness 8.6.1 Knife Machining 8.6.2 Sanding 8.6.3 Problems with Separation of Roughness Components 8.6.4 Effect of Tool Wear on the Surface Roughness 8.7 Internal Relationships Between Roughness Parameters 8.8 Skewness and Kurtosis 8.9 The Use of Structure Number and Abbott-Ratio 8.10 Influence of Wetting on Surface Roughness 8.11 Scattering of Roughness Data Literature 9 Optimization of Wood Machining 9.1 Introduction 9.2 General Remarks 9.3 Scientific Methods of Optimization 9.4 Application of Engineering Optimization Method 9.4.1 Primary Wood Processing 9.4.2 General Wood Machining 9.4.3 Edge Machining 9.4.4 Machining of Curved Surface 9.4.5 Lifetime of Tools 9.4.6 Manufacturing Costs 9.5 Machining Accuracy Literature Index