|
Preface |
6 |
|
|
Contents |
7 |
|
|
Acronyms |
8 |
|
|
1 Introduction to Miniaturisation |
12 |
|
|
1.1 Introduction |
12 |
|
|
1.2 Scaling Laws |
13 |
|
|
1.2.1 Geometry |
14 |
|
|
1.2.2 Mechanics |
14 |
|
|
1.2.3 Dynamics |
15 |
|
|
1.2.4 Micro-fluidics |
16 |
|
|
1.2.5 Van der Waals Force |
18 |
|
|
1.2.6 Electromagnetism |
19 |
|
|
1.2.7 Thermodynamics |
20 |
|
|
1.2.8 Scaling with Distances |
20 |
|
|
1.2.9 Scaling Exponent |
22 |
|
|
1.3 Materials |
22 |
|
|
1.3.1 Smart Materials |
24 |
|
|
1.3.1.1 Piezoelectric Materials |
24 |
|
|
1.3.1.2 Shape Memory Alloy |
25 |
|
|
1.3.1.3 Electroactive Polymers |
26 |
|
|
1.4 Micro-factories |
28 |
|
|
References |
32 |
|
|
2 Micro-injection Moulding |
34 |
|
|
2.1 Overview |
34 |
|
|
2.1.1 Technical Description |
34 |
|
|
2.1.2 Definition of Technology |
35 |
|
|
2.2 Materials |
37 |
|
|
2.3 Design and Simulation |
38 |
|
|
2.3.1 Characterisation—Micro-rheology |
38 |
|
|
2.3.2 Rheological Simulation |
38 |
|
|
2.3.3 Conclusions |
39 |
|
|
2.4 Process and Materials |
41 |
|
|
2.4.1 Principles of the Injection Moulding Process |
41 |
|
|
2.4.2 Key Features |
44 |
|
|
2.4.3 Dosage (Charge) |
44 |
|
|
2.4.4 Injection Speed |
46 |
|
|
2.4.5 Injection Pressure |
46 |
|
|
2.4.6 Holding Pressure |
47 |
|
|
2.4.7 Holding Pressure Time |
47 |
|
|
2.4.8 Cooling Time |
48 |
|
|
2.4.9 Process Temperatures in the Mould, Expansion and Balance |
48 |
|
|
2.4.10 Mould Venting |
50 |
|
|
2.5 Tools and Machines |
53 |
|
|
2.5.1 The Injection Machine |
53 |
|
|
2.5.2 Plasticising Systems |
56 |
|
|
2.5.3 Micro-injection System Without Plasticising |
58 |
|
|
2.5.4 Main Micro-injection Moulding Machines |
59 |
|
|
2.5.5 Micro-injection Moulds |
59 |
|
|
2.6 Sectors of Application |
63 |
|
|
2.7 Handling and Verification of Micro-parts |
67 |
|
|
2.7.1 Handling |
67 |
|
|
2.7.2 Inspection |
68 |
|
|
2.7.3 Morphological Analysis |
69 |
|
|
2.7.4 Mechanical Analysis |
70 |
|
|
2.8 Application Case: Micro-filter |
71 |
|
|
2.8.1 Description |
71 |
|
|
2.8.2 Micro-filter Design Analysis (FEM/CAE) |
73 |
|
|
2.8.3 Micro-injection Process Simulation |
73 |
|
|
2.8.3.1 Filling and Parameters |
73 |
|
|
2.8.3.2 Gate Positioning Optimisation |
73 |
|
|
2.8.3.3 Welding Lines and Air Traps Analysis |
75 |
|
|
2.8.4 Mould Design and Manufacturing |
75 |
|
|
2.9 Process Optimisation and Part Production |
76 |
|
|
Bibliography |
77 |
|
|
3 Micro-additive Manufacturing Technology |
78 |
|
|
3.1 Overview |
78 |
|
|
3.2 Micro-stereolithography (MSL) and Two Photon Polymerisation (2PP) |
80 |
|
|
3.2.1 Operating Principles |
80 |
|
|
3.2.2 Technology Overview and Systems |
82 |
|
|
3.2.3 Materials |
84 |
|
|
3.2.4 Applications |
85 |
|
|
3.3 Powder Bed Fusion Technologies |
87 |
|
|
3.3.1 Operating Principles |
87 |
|
|
3.3.2 Technology Overview and Systems |
88 |
|
|
3.3.3 Machines and Materials |
88 |
|
|
3.3.4 Applications (Table 3.3) |
90 |
|
|
3.4 Three Dimensional Printing via Binder Jetting |
91 |
|
|
3.4.1 Operating Principles |
92 |
|
|
3.4.2 Technology Overview and Systems |
93 |
|
|
3.4.3 Machines and Materials |
94 |
|
|
3.4.4 Applications |
95 |
|
|
3.5 Three Dimensional Printing via Material Jetting |
95 |
|
|
3.5.1 Operating Principles |
95 |
|
|
3.5.2 Technology Overview and Systems |
96 |
|
|
3.5.3 Machines and Materials |
97 |
|
|
3.5.4 Materials |
98 |
|
|
3.5.5 Applications |
99 |
|
|
3.6 Filament Deposition |
100 |
|
|
3.6.1 Operating Principles |
100 |
|
|
3.6.2 Technology Overview and Systems |
101 |
|
|
3.6.3 Machines and Materials |
102 |
|
|
3.6.4 Applications |
105 |
|
|
References |
105 |
|
|
4 Manufacturing Technology: Micro-machining |
107 |
|
|
4.1 Overview |
107 |
|
|
4.1.1 Why Micro-machining? |
107 |
|
|
4.1.2 Definitions |
108 |
|
|
4.1.2.1 Micro-cutting |
108 |
|
|
4.1.2.2 Size Effect |
109 |
|
|
4.1.2.3 Uncut Chip Thickness |
110 |
|
|
4.1.2.4 Rake Angle |
110 |
|
|
4.1.2.5 Shearing, Ploughing, and Rubbing |
110 |
|
|
4.2 Engineering Materials and Material Properties |
110 |
|
|
4.2.1 Elastic and Plastic Material Behaviour |
110 |
|
|
4.2.2 Failure of Materials |
112 |
|
|
4.2.2.1 Crack Propagation |
113 |
|
|
4.3 Design and Simulation |
114 |
|
|
4.3.1 Introduction |
114 |
|
|
4.3.2 Why Simulate Micro-cutting? |
114 |
|
|
4.3.2.1 Micro-machining Simulation |
115 |
|
|
4.3.2.2 Machining Strategies |
116 |
|
|
4.3.3 Micro Versus Conventional Machining |
116 |
|
|
4.3.4 Issues Covered by Modelling of Micro-machining |
117 |
|
|
4.3.5 Mechanistic Modelling of the Micro-cutting Process |
118 |
|
|
4.3.6 Finite Element Analysis (FEA) |
119 |
|
|
4.3.6.1 Established Predictive FEA Models |
119 |
|
|
4.3.7 Molecular Dynamics Modelling Approach |
120 |
|
|
4.3.7.1 Established MD Models |
120 |
|
|
4.3.8 Multi-scale Simulation Methods |
120 |
|
|
4.3.9 Indicative Costs |
121 |
|
|
4.4 Process, Tools and Machines |
121 |
|
|
4.4.1 Process |
121 |
|
|
4.4.1.1 Machining Scale |
122 |
|
|
4.4.1.2 Cutting Forces |
123 |
|
|
4.4.1.3 Size Effect |
125 |
|
|
4.4.1.4 Burr Formation |
125 |
|
|
4.4.2 Micro-tools |
126 |
|
|
4.4.2.1 Tool Size |
126 |
|
|
4.4.2.2 Tool Wear and Breakage |
127 |
|
|
4.4.2.3 Micro-tool Coatings |
129 |
|
|
4.4.3 Machine-Tools |
129 |
|
|
4.4.3.1 Micro-machining Platform Characteristics |
129 |
|
|
4.4.3.2 Machine-Tools Suppliers |
130 |
|
|
4.4.4 Measurement Systems |
132 |
|
|
4.4.4.1 Geometric Measurement: Pre-processing |
132 |
|
|
4.4.4.2 Geometric Measurement: During Processing |
132 |
|
|
4.4.4.3 Geometric Measurement: Post-processing |
133 |
|
|
4.4.4.4 Process Parameters Measurement |
134 |
|
|
4.5 Sectors and Applications |
135 |
|
|
4.5.1 Industry Sectors and Application Areas |
135 |
|
|
References |
136 |
|
|
5 Micro-waterjet Technology |
138 |
|
|
5.1 Introduction to Waterjet Technology |
138 |
|
|
5.2 High Energy Fluid Jet Generation |
139 |
|
|
5.2.1 High Pressure Pump |
139 |
|
|
5.2.2 High Pressure Circuit |
140 |
|
|
5.2.3 Handling System and Fixturing |
141 |
|
|
5.2.4 Energy Conversion |
141 |
|
|
5.2.5 Machining Mechanism and Cutting Heads |
142 |
|
|
5.2.6 Abrasive Feeding System |
143 |
|
|
5.2.7 Catcher |
144 |
|
|
5.3 AWJ Quality Assessment |
144 |
|
|
5.3.1 Machining Defects Description |
146 |
|
|
5.3.2 Defect Reduction Methods |
146 |
|
|
5.4 Micro-AWJ Technology |
149 |
|
|
5.5 Micro-AWJ Key Features |
149 |
|
|
5.5.1 Micro-AWJ Enabling Characteristics |
150 |
|
|
5.6 Micro-AWJ Case Studies |
151 |
|
|
5.6.1 Precision Through Defect Compensation |
151 |
|
|
5.6.2 Thin Layers Drilling |
152 |
|
|
5.6.3 Inhomogeneous Materials |
153 |
|
|
5.6.4 Advanced Alloys for Biomedical Applications |
154 |
|
|
5.6.5 Thin Details Cutting on POM |
155 |
|
|
5.6.6 Stainless Steel Racks Small Batch |
155 |
|
|
5.6.7 Deep Holes with Tight Tolerances |
155 |
|
|
References |
157 |
|
|
6 Micro-electro-Discharge Machining (Micro-EDM) |
158 |
|
|
6.1 Principle of Electro-Discharge Machining (EDM) |
158 |
|
|
6.2 Micro-EDM Process Parameters |
161 |
|
|
6.3 Performance of the Micro-EDM Process: Quality Indices |
163 |
|
|
6.3.1 Micro-EDM Milling Optimisation via Design of Experiments (DoE) |
165 |
|
|
6.3.2 Monitoring for Evaluating Micro-EDM Performance |
166 |
|
|
6.3.3 Tool Wear and Tool Path: How to Obtain Surface and Profile Accuracy in Micro-EDM Features |
167 |
|
|
6.3.4 High Aspect Ratio Cavities: Role of Tool Wear and Dielectric Flushing |
169 |
|
|
6.4 Materials and Effects on Micro-EDM Process |
170 |
|
|
6.5 Applications |
171 |
|
|
6.5.1 Straight Bevel Micro-gear |
171 |
|
|
6.5.2 Customised Internal Fixation Devices for Orthopaedic Surgery |
173 |
|
|
6.5.3 Micro-EDM Milling/Sinking Combined Approaches: Micro-filter Mould |
177 |
|
|
References |
180 |
|
|
7 Moulded Interconnect Devices |
183 |
|
|
7.1 Overview—Moulded Interconnect Devices |
183 |
|
|
7.2 Materials |
185 |
|
|
7.2.1 Introduction |
185 |
|
|
7.2.2 Requirement for Substrate Material |
186 |
|
|
7.2.3 Typical MID Materials |
187 |
|
|
7.3 Processes |
188 |
|
|
7.3.1 Overview |
188 |
|
|
7.3.2 Two-Shot Injection Moulding |
188 |
|
|
7.3.3 Laser Direct Structuring (LDS) |
191 |
|
|
7.3.4 Hot Embossing |
194 |
|
|
7.3.5 Aerosol-Jet Printing |
195 |
|
|
7.3.6 Advantages and Challenges of Each Technology |
197 |
|
|
7.4 MID Assembly |
199 |
|
|
7.4.1 Mounting Techniques |
199 |
|
|
7.4.2 Positioning |
199 |
|
|
7.4.3 Challenges |
200 |
|
|
7.5 Sectors and Applications |
201 |
|
|
7.6 Application Case |
202 |
|
|
References |
203 |
|
|
8 Micro-scale Geometry Measurement |
205 |
|
|
8.1 Introduction |
205 |
|
|
8.2 Contact Techniques |
206 |
|
|
8.2.1 Stylus Instruments |
206 |
|
|
8.2.2 Micro Coordinate Measuring Machines |
207 |
|
|
8.2.2.1 Introduction to Coordinate Measuring Machines |
207 |
|
|
8.2.2.2 Capability of Commercial Micro-CMMs |
208 |
|
|
8.2.2.3 Micro-probing Systems |
208 |
|
|
8.2.2.4 Sources of Error on CMMs |
211 |
|
|
8.3 Non-contact Techniques |
212 |
|
|
8.3.1 Focus Variation Microscopy |
212 |
|
|
8.3.2 Coherence Scanning Interferometry |
213 |
|
|
8.3.3 Confocal Microscopy |
215 |
|
|
8.3.4 Laser Triangulation |
217 |
|
|
8.3.5 Micro-fringe Projection |
219 |
|
|
8.4 Tomographic Methods |
220 |
|
|
8.4.1 Optical Coherence Tomography |
220 |
|
|
8.4.2 X-ray Computed Tomography |
223 |
|
|
References |
224 |
|
|
9 Micro-assembly |
230 |
|
|
9.1 Introduction |
230 |
|
|
9.2 Hybrid Micro-systems Production |
231 |
|
|
9.3 Micro-assembly Definition |
231 |
|
|
9.4 Micro-assembly Methods |
233 |
|
|
9.4.1 Classification |
233 |
|
|
9.4.2 Robotic Micro-assembly |
236 |
|
|
9.4.3 Self-assembly |
237 |
|
|
9.4.4 Robotic Micro-assembly and Self-assembly Compared |
237 |
|
|
9.4.5 Hybrid Micro-assembly |
238 |
|
|
9.5 Robots for Micro-assembly |
239 |
|
|
9.5.1 Definition |
239 |
|
|
9.5.2 Classification |
240 |
|
|
9.5.3 Design Considerations |
241 |
|
|
9.5.4 Example of Robots for Micro-assembly |
242 |
|
|
9.6 Micro-manipulation Systems |
245 |
|
|
9.6.1 Issues in Micro-manipulation |
245 |
|
|
9.6.2 Micro-manipulation Strategies |
246 |
|
|
9.6.2.1 Contact Manipulation |
246 |
|
|
9.6.2.2 Contact-Free Handling |
249 |
|
|
9.6.3 Release Strategies |
250 |
|
|
9.6.3.1 Active Techniques |
250 |
|
|
9.6.3.2 Passive Techniques |
251 |
|
|
9.7 Sensors and Control Methods for Micro-assembly |
251 |
|
|
9.7.1 Vision |
251 |
|
|
9.7.2 Force Sensing |
255 |
|
|
9.7.3 Environmental Conditioning in Micro-assembly |
256 |
|
|
9.8 A Case Study: The ITIA Micro-assembly Work-Cell |
258 |
|
|
References |
261 |
|
|
10 Market Analysis, Technological Foresight, and Business Models for Micro-manufacturing |
267 |
|
|
10.1 Introduction |
267 |
|
|
10.2 Micro-manufacturing Market Analysis |
268 |
|
|
10.2.1 Business Drivers and Market Demands |
268 |
|
|
10.2.2 Main Sectors of Application |
269 |
|
|
10.2.2.1 Healthcare |
271 |
|
|
10.2.2.2 Energy |
271 |
|
|
10.2.2.3 Aerospace |
272 |
|
|
10.2.3 Key Stakeholders |
273 |
|
|
10.2.4 Strengths, Weaknesses, Opportunities, Threats |
274 |
|
|
10.3 Future of Micro-manufacturing Market and Technological Foresighting |
276 |
|
|
10.3.1 Market Trends |
276 |
|
|
10.3.2 Future Sectors |
277 |
|
|
10.3.3 Future Applications and Technologies |
278 |
|
|
10.3.3.1 Future of Micro-parts |
279 |
|
|
10.3.3.2 Future of Micro-manufacturing Technologies |
281 |
|
|
10.4 Business Models for Micro-manufacturing |
282 |
|
|
10.4.1 What Is a Business Model? |
282 |
|
|
10.4.1.1 Business Model Elements |
283 |
|
|
10.4.2 Innovative Business Models |
286 |
|
|
10.4.3 Current Business Models for Micro-manufacturing |
287 |
|
|
10.4.3.1 Traditional Machinery Selling |
287 |
|
|
10.4.3.2 Production Service |
288 |
|
|
10.4.4 Innovative Business Models for Micro-manufacturing |
290 |
|
|
10.4.4.1 Personalised Manufacturing for Healthcare with Closed Integration with Hospitals |
290 |
|
|
10.4.4.2 Micro-factory |
292 |
|
|
10.4.4.3 Micro-machinery Producers |
293 |
|
|
References |
296 |
|
|
Index |
298 |
|