| ACKNOWLEDGEMENTS | 第4-5页 |
| ABSTRACT | 第5-6页 |
| 摘要 | 第7-24页 |
| 1 Introduction | 第24-27页 |
| 1.1 Research Significance | 第24页 |
| 1.2 Research Objective | 第24-25页 |
| 1.3 Research Contents and Methodology | 第25-26页 |
| 1.4 Thesis Structure | 第26-27页 |
| 2 Literature Review | 第27-43页 |
| 2.1 Theoretical Foundation of Lean Six Sigma | 第27页 |
| 2.2 Lean Development History Introduction | 第27-34页 |
| 2.2.1 Handicraft Industry Production Type | 第27-28页 |
| 2.2.2 Mass Production Industry Production Type | 第28-29页 |
| 2.2.3 Mass Production Development History | 第29-30页 |
| 2.2.4 Lean Production Development Introduction | 第30-32页 |
| 2.2.5 Lean 5 Principles | 第32-34页 |
| 2.3 Six Sigma Development Introduction | 第34-39页 |
| 2.3.1 The Origins of Six Sigma | 第34-35页 |
| 2.3.2 Six Sigma Definition | 第35-37页 |
| 2.3.3 Six Sigma DMAIC | 第37-38页 |
| 2.3.4 Six Sigma and Statistics | 第38页 |
| 2.3.5 The Cost of Quality | 第38-39页 |
| 2.3.6 Design for Six Sigma | 第39页 |
| 2.4 Lean Six Sigma Combination | 第39-41页 |
| 2.5 Lean Six Sigma Application | 第41-43页 |
| 3 A Company Lead Time Problem Description | 第43-45页 |
| 3.1 A Company introduction | 第43页 |
| 3.2 A Company Lean Six Sigma Development Introduction | 第43-44页 |
| 3.3 A Company Long Lead Time Problem Introduction | 第44-45页 |
| 4 Long Lead Time Root Cause Analysis | 第45-79页 |
| 4.1 The Long Lead Time Problem Qualitative Analysis | 第45-46页 |
| 4.1.1 Unstable Forecast | 第45页 |
| 4.1.2 Unordered Planning System | 第45-46页 |
| 4.1.3 Unstable Production Process | 第46页 |
| 4.1.4 Low Efficient Logistic System | 第46页 |
| 4.2 Analyze With Lean Six Sigma Methodology | 第46-79页 |
| 4.2.1 Define Phase to Set up the Team and Target and Timeline | 第46-47页 |
| 4.2.2 Measure Phase to Find the Potential Causes for Long Lead Time | 第47-60页 |
| 4.2.3 Analyze Phase to Collect the Data to Verify the Root Causes | 第60-79页 |
| 5 Suggestions for Long Lead Time Shortening | 第79-93页 |
| 5.1 Improve Phase to Provide Suggestions for all Root Causes | 第79-80页 |
| 5.2 | 第80-84页 |
| 5.2.3 Improvement Suggestions for Planning and Tracking System Problem | 第80-81页 |
| 5.2.4 Improvement Suggestions for Pattern Maintenance Program Problem | 第81页 |
| 5.2.5 Improvement Suggestions for Cutting Process Problem | 第81-82页 |
| 5.2.6 Improvement Suggestions for Grinding and Welding Process Problem | 第82-83页 |
| 5.2.7 Improvement Suggestions for Layout Process Problem | 第83页 |
| 5.2.8 Improvement Suggestions for Pattern Warehouse Location Problem | 第83-84页 |
| 5.3 Control Phase to Evaluate and Sustain the Results | 第84-93页 |
| 5.3.3 Control Plan to Make Sure the Sustainability | 第84-89页 |
| 5.3.4 Process Stability and Capability Verification | 第89-91页 |
| 5.3.5 Project Final Results and Financial Benefit | 第91-93页 |
| 6 Conclusion and Perspectives | 第93-95页 |
| 6.1 Conclusion | 第93-94页 |
| 6.2 Perspectives | 第94-95页 |
| REFERENCES | 第95-98页 |
