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Automated/mechanized drilling and countersinking of airframes /
Modern aircraft manufacturing involves drilling and countersinking hundreds of thousands to millions of holes. Doing this work by hand accounts for 65% of the cost of airframe assembly, 85% of the quality issues, and 80% of the lost time due to injuries. Automated drilling and countersinking replace...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Warrendale, Pennsylvania, USA :
SAE International,
[2013]
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Intro; Table of Contents; Preface; Acknowledgments; Introduction; End Notes; Reference; Chapter 1 Historical Perspective: Why Airframes Have Holes; 1.1 Introduction; 1.2 The Airframe; 1.3 Aluminum; 1.4 Rivets; 1.5 Assembly Tooling; 1.6 Titanium; 1.7 Hand Tools and Drills; 1.8 Composites; 1.9 Tooling and Composites; 1.10 On-Assembly Drilling; References; Chapter 2 Airframe Manufacturing Cost Drivers; 2.1 Introduction; 2.2 Why Reduce Cost?; 2.2.1 The Value Price Profitability Index Commercial; 2.3 Defining Cost; 2.4 Identifying Manufacturing-Related Costs; 2.4.1 Efficiency; 2.4.1.1 Fabrication.
- 2.4.1.2 Assembly2.4.2 Effectivity; 2.4.3 Impact; 2.4.3.1 Cost of Quality; 2.4.3.2 Cost of Workforce Injury; 2.4.3.3 Support Cost; 2.4.4 Cost Contributors Assessment; 2.5 Summary; References; Chapter 3 Incentives and Disincentives to Automate; 3.1 Introduction; 3.2 Military Automation Disincentive; 3.2.1 The Means of Production; 3.2.2 Parceled Application; 3.2.3 Specific Use; 3.2.4 Time Horizon; 3.2.5 Politics; 3.2.5.1 Return on Investment; 3.2.5.2 Jobs; 3.2.6 Controlled Profit; 3.2.7 Restricted Sales; 3.2.8 No Competition; 3.3 Military Producers' Incentives to Automate; 3.3.1 Affordability.
- 3.3.2 Enlightenment3.3.3 Complexity; 3.3.4 Multiyear Buys; 3.3.5 Quality; 3.3.6 Marketing; 3.3.7 Access; 3.4 Commercial Disincentives; 3.4.1 Geopolitical Local; 3.4.2 Geopolitical Global; 3.4.3 Labor; 3.5 Commercial Incentives; 3.6 Summary; References; Chapter 4 Types of Drill/Countersink Automation; 4.1 Introduction; 4.2 Motion; 4.2.1 Size; 4.2.2 Machine Types; 4.2.3 Tools and Parts; 4.2.4 Integration Level I; 4.3 Action; 4.3.1 End Effector; 4.3.1.1 Size; 4.3.1.2 Power; 4.3.1.3 Capability; 4.3.1.4 Pressure Foot; 4.3.1.5 Tool Holder; 4.3.2 Dust Collection; 4.3.3 Coolant; 4.3.4 Tool Changer.
- 4.3.5 Vision System4.3.6 Inspection; 4.3.7 Integration Level II; 4.4 Controller; 4.4.1 Human Machine Interface; 4.4.2 Volumetric Compensation Algorithm; 4.4.3 Integration Level III; 4.5 Calibration; 4.6 Sustainability; 4.7 Summary; References; Chapter 5 Considerations Before Replacing Hand Drilling with Mechanization or Automation; 5.1 Introduction; 5.2 Before the Decision to Automate; 5.2.1 Feasibility Analysis; 5.2.1.1 Access; 5.2.1.2 Flooring; 5.2.1.3 Tooling Integration; 5.2.1.4 Factory Infrastructure; 5.2.1.5 Current Operations; 5.2.1.6 Environment; 5.2.1.7 Labor; 5.2.1.8 Risk Assessment.
- 5.2.1.9 Feasibility Analysis Deliverable5.2.2 Cost Benefits Analysis; 5.2.2.1 Hand Process Time Study Analysis; 5.2.2.2 Automated Drill Time Study Analysis; 5.2.2.3 Machine Cost; 5.2.2.4 Ancillary Costs; 5.2.2.5 Cost Collection and Conversion; 5.2.2.6 Return on Investment; 5.3 "Go-Ahead" Decision Criteria; 5.4 Summary; Chapter 6 How to Choose the Right Automation; 6.1 Introduction; 6.2 Three Don'ts; 6.2.1 Needs; 6.2.2 Affordability; 6.2.3 Complexity; 6.3 References; 6.4 Requirements Document; 6.4.1 General Information; 6.4.2 System Summary; 6.4.3 Functional Requirements; 6.4.4 User Impacts.