Microhandling devices for the assembly of Hybrid Microproducts
Marcello Porta
I
INDEX
Introduction………..………1
Chapter 1 Microproducts ... 3
1.1 Birth and features of microproducts ... 3
1.2 Typical microproducts and fields of application ... 3
1.3 Economic aspects of microproducts ... 4
1.4 Microelectronics based vs Hybrid microproducts ... 5
1.5 Hybrid microproducts and their applications ... 7
References ... 16
Chapter 2 The assembly of hybrid microproducts ... 19
2.1 The problem of high assembly costs ... 19
2.1.1 Surface forces... 19
2.1.2 Tolerances and precision ... 23
2.1.3 Measurement and control... 23
2.1.4 Delicate and fragile components... 25
2.1.5 Standard, tolerances rules and systematic design... 25
2.1.6 Methods and models... 26
2.2 The manual assembly of hybrid microproducts... 26
2.3 Alternative strategies for reducing costs ... 27
2.3.1 Teleoperated method ... 27
2.3.2 Parallel assembly ... 28
2.3.3 Macrofactory... 30
2.3.4 Microfactory... 31
2.3.5 Submerged assembly ... 46
2.3.6 Conclusion on alternative approaches to manual assembly ... 46
2.4 A proposal to reach the flexible microfactory ... 48
References ... 50
Chapter 3 Handling of microproducts within the microfactory ... 53
3.1 Introduction ... 53
3.2 State of the art in the handling of microparts ... 53
3.2.1 Strategies for transporting, positioning and orienting microparts... 53
3.2.2 Strategies for grasping and releasing microparts... 58
3.2.3 Strategies for microrobot & micromanipulator ... 62
3.2.4 Strategies for microsorters and microsieves ... 66
References ... 68
Microhandling devices for the assembly of Hybrid Microproducts
Marcello Porta
II
Chapter 4 Developed Handling devices for microproducts ...77
4.1 Introduction ...77
4.2 Handling devices developed in the research ...77
4.2.1 The electrostatic centering device ...77
Aim of the device
...
78The experimental device and the control parameters
...
78The theoretical analysis
...
80Tested microobjects and centering performance
...
81The experimental procedure
...
82The experiments
...
84Experimental results
...
86Integration with grippers
...
894.2.2 The electrostatic sorting device ...91
Aim of the device ...91
The experimental device ...92
The theoretical analysis of the electrostatic field ...92
Experimental results ...94
4.2.3 Grippers...97
The mechanical grasping devices
...
97Design and simulation ... 97
The devices ... 99
Experimental test... 99
The adhesive grasping devices
...
1024.2.4 The electromagnetic positioning device ...103
Aim of the device
...
103The design of the electromagnetic positioner
...
103The theoretical analysis
...
104The experimental characterization of the prototype
...
106References ...109
Chapter 5 The assembly microfactory of the PRIN Project...111
5.1 Introduction ...111
5.2 The Prin project ...111
5.3 Choice of the benchmark, assembly strategy and tasks ...112
5.4 The devices of the assembly system and the simulation...116
5.4.1 The loading of the carrier...119
5.4.2 The assembly tasks ...119
5.5 The microfactory developed within the project ...123
5.5.1 The loading of the tray ...124
5.5.2 The assembly tasks ...124
References ...126
Conclusion………. ...127
