装配中的不协调,是飞行器生产中的主要矛盾和中心问题,解决该问题是保证飞行器制造/装配质量的前提。本书针对新一代飞行器的高性能设计、制造和装配要求,系统介绍了飞行器数字化装配协调技术和装配质量控制技术的科学理论与工程方法,主要包括基于数字协调模型的飞行器装配工作方法、产品关键协调特征的量化识别、柔性装配工装系统定位精度的精准保障、装配误差的传递与协调误差尺寸链的构建、装配质量的闭环控制与其可靠性提升等内容。一方面,本书结合最新研究进展,以具体的装配协调质量控制需求为出发点,对装配工艺与协调技术进行系统的解析;另一方面,以飞行器制造的工艺过程为核心,强化理论研究与工程现场的综合应用,帮助读者更好地理解飞行器装配协调技术的理论方法。本书内容丰富,可供航空航天科学与技术学科的教师和学生以及装配质量相关的科研人员与工程技术人员参考使用。Inconsistency in assembly is the main contradiction and central issue in aeronautical production, and resolving this inconsistency is a prerequisite for ensuring the quality of aeronautical manufacturing and assembly. Focusing on the high performance requirements for design and manufacturing and assembly, this book systematically introduces the scientific theory and engineering methods of full digital assembly coordination technology and assembly quality control technology. Specific content includes aircraft assembly work methods based on digitalcoordination models, quantitative identification of key coordination features for products, precise guarantees of positioning accuracy for flexible assembly tooling systems, transmission of assembly errors and construction of coordination error chains, closed-loop control of assembly quality and improvement of its reliability. On the one hand, based on the latest research progress and taking the specific assembly coordination quality control requirements as the starting point, a systematic review on assembly processes and coordination technologies is conducted. On the other hand, focusing on the manufacturing process of aeronautical products and strengthening the comprehensive application of theoretical research and practical engineering, readers will gain an understanding of the theoretical methods of aeronautical assembly coordination technology.For the assembly process design and assembly coordination assurance, this book provides a rich and in-depth introduction. It can be used as a reference for teachers and students in aerospace science and technology majors, as well as the researchers and engineering technicians related to assembly quality.
Chapter 1 Introduction 001
1.1 Background and Research Requirements for Assembly Technology 001
1.2 Assembly Process Parameters Optimization 009
1.3 Assembly Error Transfer and Accumulation 020
1.4 Comprehensive Adjustment of Assembly Geometric Accuracy and Internal Stress 027
1.5 Virtual Assembly Simulation and Validation Tools and Methods 039
1.6 Structure of the Book 043
References 045
Chapter 2 Working Mode in Aeronautical Manufacturing Based on Digital Coordination Model 051
2.1 Introduction and Related Work 051
2.2 Coordination Accuracy Controlling Method 053
2.3 Principle of the Working Mode Based on Digital Coordination Model 055
2.4 Experimental Verification 071
2.5 Summary 079
References 080
Chapter 3 Comprehensive Identification of Coordination Features with Complete Importance Modeling 082
3.1 Introduction and Related Work 082
3.2 Hierarchical Decomposition of Coordination Features for Aeronautical Product 084
3.3 General Framework of the Comprehensive Identification of Coordination Features 087
3.4 Qualitative Identification of Coordination Features 089
3.5 Quantitative Identification of Coordination Features by Calculating Complete Importance 090
3.6 Experimental Verification 096
3.7 Summary 105
References 105
Chapter 4 Positioning Error Guarantee Modeling for Flexible Assembly Tooling 108
4.1 Introduction and Related Work. 108
4.2 Establishment of Assembly Measurement Field 113
4.3 Accurate Measurement of Actual Error Status and Assembly Conditions 114
4.4 Pre-compensation Stage Considering Actual Error Status and Mechanical Analysis. 117
4.5 Parameter Identification for Tooling and Locating Motion Model with Measured Sample Data 127
4.6 Accurate Compensation Stage Combining Mechanism Analysis and Measurement Data 136
4.7 Summary 141
References 142
Chapter 5 Assembly Error Propagation Modeling and Coordination Error Chain Construction for Aeronautical Structure 146
5.1 Introduction and Related Work. 146
5.2 Basic Error Sources Modeling in Assembly Process 150
5.3 Interaction Relationship among Different Basic Error Items 153
5.4 Error Modeling for Transformation Process of Coordination Datum 157
5.5 Coordination Error Chain Construction Based on Error Propagation Modeling 162
5.6 Experimental Verification 167
5.7 Summary 173
References 173
Chapter 6 Assembly Quality Control and Reliability improvement with Feedback Actions 176
6.1 Introduction and Related Work. 176
6.2 Probability Model of Assembly Error for Accuracy Reliability Evaluation 181
6.3 Probability Analysis and Precise Adjustment of Out-of-tolerance Event with LDP Method 187
6.4 Precise Optimization of Repair Quantity Based on Measured Data and IPSO Algorithm 195
6.5 SPC for Aeronautical Assembly Quality Control for Single Component 199
6.6 Assembly Station Flowing Fluctuation Analysis at Different Time Stages for Multiple Components 204
6.7 Experimental Verification: the First Case 207
6.8 Experimental Verification: the Second Case 217
6.9 Summary 225
References 226
內容試閱:
For the new generation aeronautical products, their manufacturing and assembly quality affects the service performance even more directly. In assembly work, key quality indexes, such as profile flush, gap, the convex-concave value of the fastener joint’s head, have been enhanced nearly an order of magnitude compared to previous aviation type, namely, the assembly quality requirements have reached the sub-millimeter level. And the assembly coordination accuracy is generally even tighter than individual parts’ manufacturing errors. For example, ① the assembly steps between different skin panels along the flight direction are not permitted for modern aircraft, ② the gaps between different skin sections are smaller than the forming/manufacturing accuracy of the sheet parts, especially for the carbon fiber reinforced polymer (CFRP) parts with relatively low manufacturing accuracy. As a result, the assurance on assembly and coordination accuracy is of great concern to the design and manufacturing departments in the modern aviation industry.
As a key technology in aircraft manufacturing, assembly coordination technology is important for improving the competitiveness and manufacturing capabilities. The main topics of this book are as follows. ① The working mode based on digital coordination model (DCM), which provides an overall guiding line for digital assembly coordination theory. ② The assembly quality analysis and control technical system, which enhances accuracy reliability and ensures assembly accuracy within the required range, and lays a precision foundation for products’service performance.
This book contains six chapters. Some content was published in the Journal of Manufacturing Systems, Composite Structures, Robotics and Computer-Integrated Manufacturing, Advanced Engineering Informatics, International Journal of Advanced Manufacturing Technology, Assembly Automation, IEEE Access,
Proceedings of the Institution of Mechanical Engineers Part B-Journal of Engineering Manufacture, and others. This book could open a door for readers to gain a deeper understanding of the assembly process and quality control technology for aviation thinwalled components. This book could also serve as a reference for teachers and students majoring in aerospace manufacturing engineering, mechanical engineering, automotive engineering, and related fields, as well as researchers and engineering technicians.
We express our special thanks for the support of the National Natural Science Foundation of China (52175450, 51805502), the National Defense Basic Scientific Research Foundation (JCKY 2023205B006), and the Aerospace Science Research Foundation (2017ZE25005). As a result of research, some content in this book may inevitably be incomplete, contain inappropriate expressions or biased opinions. We sincerely welcome feedback and corrections from experts and readers.