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2020 Vol. 63, No. 1/2
Published: 2020-01-15
FEATURE
FORUM
RESEARCH
C0NTENTS
COVER STORY
APPROACHING SCIENCE
 
       FEATURE
14 Intelligent Production Management and Control for Aircraft Assembly Pulsation Line Based on Digital Twin
ZHAO Yang, FU Xiaolu, LIAO Qingmiao, LIU Qinghua, WU Tao
DOI: 10.16080/j.issn1671-833x.2020.01/02.014
This paper studies the application of digital twin on aircraft assembly pulsation line in order to improve the intelligence of production management and control. First, based on the theory of five-dimension digital twin model, the application architecture of digital twin aircraft assembly pulsation line is constructed. Then, five aspects about intelligent production management and control are focused on: reactive planning and scheduling, precise logistics distribution, intelligent operation guidance, production line health monitoring, and continuous optimization of resource allocation.
2020 Vol. 63 (1/2): 14-20 [Abstract] ( 418 ) HTMLNew PDF (1598 KB)  ( 1071 )
       COVER STORY
22 Intelligent Assembly Capacity Building Method for Aircraft Large Components Based on MBSE
LIU Shuntao, QIU Shiguang
DOI: 10.16080/j.issn1671-833x.2020.01/02.022
Construction of intelligent assembly capability for aircraft large components (CIAC–ALC) is a complex system engineering with remarkable characteristics of multi-disciplinary and multi-professional cross-integration. In recent years, CIAC–ALC has achieved a considerable degree of single-point technological breakthrough and applications, but it has not reached the global optimum. Therefore, a method-based on modelbased systems engineering (MBSE) is proposed to scientifically develop the CIAC–ALC. Through this method, the requirements and technical schemes of CIAC–ALC are defined and refined step by step. In the process, the corresponding digital model is constructed and the simulation technology is used in continuous verification and iterative optimization for realizing maximum effectiveness of CIAC–ALC.
2020 Vol. 63 (1/2): 22-31 [Abstract] ( 353 ) HTMLNew PDF (8588 KB)  ( 234 )
       FORUM
34 Research on Docking Stability of Movable Flexible Tooling
WANG Wei, LIN Bowen
DOI: 10.16080/j.issn1671-833x.2020.01/02.034
With the rapid development of the aviation industry, the traditional aircraft tooling is not enough to meet the needs of the actual production process. Therefore, in order to improve production efficiency and realize intelligent assembly process, digital flexible tooling has become the mainstream development direction of aircraft tooling manufacturing. In this paper, the key measurement characteristics reflected in the tooling design need to be controlled, and the docking stability study of movable flexible controlling during the moving process is completed, so as to improve the measurement accuracy and assembly efficiency of the aircraft.
2020 Vol. 63 (1/2): 34-38 [Abstract] ( 185 ) HTMLNew PDF (2234 KB)  ( 276 )
39 Dynamic Precision Material Distribution Technology Driven by Process Model
GUO Hongjie
DOI: 10.16080/j.issn1671-833x.2020.01/02.039
Aiming at the drawbacks of traditional material delivery in aircraft assembly workshop, a dynamic and precise material distribution method driven by process model is proposed, and a material precise distribution management system in aircraft assembly workshop is constructed. The key technical difficulties involved in the system construction are expounded. A model-based three-dimensional visual consumption BOM reconstruction method is adopted to establish and design a model. The MBOM process model with dynamic synchronization and precision can obtain material information in real time by using the advantages of RFID technology and guide AGV material transportation platform through indoor GPS system to realize high-precision material distribution in assembly station.
2020 Vol. 63 (1/2): 39-45 [Abstract] ( 136 ) HTMLNew PDF (2549 KB)  ( 485 )
46 State Perception Technology Oriented to Aircraft Assembly Precise Positioning
LI Xining,ZHI Shaowei, WANG Yueshun, WANG Shouchuan
DOI: 10.16080/j.issn1671-833x.2020.01/02.046
State perception, real-time analysis, independent decision-making and precise execution are the characteristics of aeronautical intelligent manufacturing. This paper summarizes many factors that affect the positioning accuracy of assembly unit. Combined with the development of perceptual technology, the perceptible factors and acquisition methods of component assembly unit are analyzed in depth, and the key elements of perceptible component assembly unit are determined: assembly site temperature, load on positioner, positioner displacement, product position and orientation. Combined with the aircraft wing assembly unit, the perceptual information acquisition method is designed. Through the fuzzy optimization method, the model of sensor model optimization is constructed, and the sensor selection of component assembly unit is completed. Through the method of sensor measurement deviation averaging, a multi type and multi quantity sensor layout model is constructed, the number and location of sensors in the assembly unit of the component are determined, and the sensor layout design is completed. Based on the multi-sensor information fusion method, a multi-sensor information fusion model is designed to fuse the multi-source heterogeneous information, and through the construction of the state perception model, the visual expression of the assembly unit positioning state is realized.
2020 Vol. 63 (1/2): 46-51 [Abstract] ( 200 ) HTMLNew PDF (2390 KB)  ( 475 )
52 Optimizing Blade Arrangement for Aero-Engine Rotor Based on Random Equiprobability Algorithm
XU Guangqing, BAI Yan, SUN Huibin, FU Xuan, ZHANG Gang, PENG Qing, CHANG Zhiyong
DOI: 10.16080/j.issn1671-833x.2020.01/02.052
As to disk-separated aero-engine rotor, blade arrangement affects initial unbalance of the rotor, and leads to vibration. During the rotor assembly process, precise and efficient blade arrangement is believed to improve assembly quality and efficiency. Aiming at this problem, a rotor initial unbalance model is built based on mass moment of a single blade. The fitness function of blade arrangement optimization is put forward. A searching algorithm is designed to make a trade-off between resource, time-consumption and optimization. Simulation and validation verify that blades could be distributed precisely and efficiently by using the proposed method. Compared with traditional methods, the initial unbalance is decreased dramatically, and the assembly quality is improved greatly. The pro-posed method has created valuable benefit in real assembly process.
2020 Vol. 63 (1/2): 52-56 [Abstract] ( 141 ) HTMLNew PDF (1919 KB)  ( 225 )
57 Research on Key Technology of Process Simulation for Aero-Engine Pulsation Assembly Production Line
LIAN Yuchen, XU Yao, LI Lin, ZHANG Yu, ZHOU Shuo
DOI: 10.16080/j.issn1671-833x.2020.01/02.057
For requirements of the domestic civil aviation engine mass production capacity, in the construction planning stage, the article presents a process simulation scheme for a pulsation production line which will be benchmarked against advanced domestic and international cases. The article describes the main technical contents and key technical directions of the process simulation of the assembly pulsation production line, and plan for key technology solutions and implementation paths, including assembly network diagram modeling and optimization, workshop process layout and production simulation, virtual product manufacturing based on 2D & 3D integrated simulation. At the end of the paper, we look forward to the digital twin of pulse production line.
2020 Vol. 63 (1/2): 57-63 [Abstract] ( 303 ) HTMLNew PDF (2146 KB)  ( 629 )
       RESEARCH
66 Research on Synchronous Control of Elliptical Vibration Cutting
HUO Jianqiang, ZHANG Chen, WANG Xiaoxue, GAN Xiaoming, SHI Han
DOI: 10.16080/j.issn1671-833x.2020.01/02.066
The micro-texture on the surface of rotating body manufactured by elliptical vibration cutting is obtained under the combined motion of rotation of spindle, feed of platform and elliptical vibration of device. Not completely realtime synchronization between the rotation of spindle and the output of device can cause the deviation of micro-texture processing. In order to solve this problem, a new synchronous control method based on the rotating angle is proposed, which can reset the sinusoidal signal of device at the reference of spindle to correct the position error caused by the drift of rotation speed. The real-time synchronization between device and spindle can be achieved by judging the rotating signal and outputting different amplitudes of voltage corresponding to different angles. Then a synchronous control module based on LabVIEW FPGA is built. It is verified in the experiments that the axial arrangement of micro-texture of rectangle array processed utilizing this method is parallel to the central axis. The deviation between experimental and simulating results is no more than 0.1° about the the angle between two arrangements in different directions. The depth of texture is changed expectedly following rotating angle. Thus, this method has the ability of real-time synchronous control of elliptic vibration cutting device.
2020 Vol. 63 (1/2): 66-72 [Abstract] ( 136 ) HTMLNew PDF (19434 KB)  ( 318 )
73 Experimental Study on Electrical Performance of Ultrasound Vibrator Based on Load Change
LIU Liping, ZHANG Pengpeng, ZHU Xueming
DOI: 10.16080/j.issn1671-833x.2020.01/02.073
Aiming at the phenomenon of amplitude attenuation and amplitude instability in ultrasonic machining, studying the influence rule of the axial and radial processing load force on the electrical characteristics of the ultrasonic vibrator was analyzed, and studying the mechanism of the influence of the change of the electrical parameters of the ultrasonic vibrator on the ultrasonic amplitude, through the static loading experiment of the ultrasonic vibrator. The results showed that, the electric parameters of the ultrasonic vibrator have similar changing trend under the radial load force and the axial load force. The dynamic resistance increases unidirectionally with the increase of load force. Dynamic inductance and dynamic capacitance have opposite changing trend, and they cause the resonant frequency increases with the increase of load force together. The static capacitance fluctuates within a certain range. The low-frequency resonance point of the ultrasonic vibrator will disappear, when the cutting force of the ultrasonic vibrator increases to a certain value. According to the theoretical analysis and experimental results, the measures to improve amplitude attenuation and amplitude instability are proposed.
2020 Vol. 63 (1/2): 73-80 [Abstract] ( 106 ) HTMLNew PDF (6418 KB)  ( 247 )
81 Application of Hydroforming Technology in Aerospace Rocket Fairing Forming
YANG Shengwei, YU Hongzhe, ZHANG Chun, LI Jiguang, TIAN Shu, LANG Lihui, NING Jun
DOI: 10.16080/j.issn1671-833x.2020.01/02.081
Aiming at the hydroforming process of large-scale thin-walled fairing, wrinkle-free and crack-free parts were obtained by numerical simulation. The numerical simulation results were in good agreement with the experimental results, and the accuracy and applicability of numerical simulation were verified. Through field tests, the formation mechanism and control mode of defects were studied. The wrinkling and cracking defects in hydroforming process were solved by loading curve of blank holder force, controlling initial chamber pressure and blank holder force. The process upgrading of liquid-filled deep drawing on large-scale thin-walled fairing components is realized, the product profile accuracy is greatly improved, the manual dressing and annealing processes in the later stage of down-pressing forming are eliminated, and the product quality and production efficiency are guaranteed.
2020 Vol. 63 (1/2): 81-86 [Abstract] ( 172 ) HTMLNew PDF (5794 KB)  ( 373 )
87 Laser 3D Printing of Iron Based Bulk Amorphous Alloy Composite
ZHANG Yueyuan, HUANG Guokun, Lü Yunzhuo
DOI: 10.16080/j.issn1671-833x.2020.01/02.087
Fe-based amorphous alloy has attracted great attention due to its excellent soft magnetic properties, high hardness, high strength and other advantages. However, the size of Fe-based amorphous alloys prepared by copper mold casting in laboratory and industrial fields are still small, which seriously restricts the practical application of Fe-based amorphous alloys as structural materials in industrial fields. The laser 3D printing method provides an opportunity to solve these problems. However, according to the current research reports at home and abroad, there are serious cracks in Fe-based amorphous alloy prepared by laser 3D printing technology, so it is impossible to use this technology to shape large size Fe-based amorphous alloy samples. In this paper, a second phase with better plasticity was introduced into Fe-based amorphous alloy to absorb thermal stress and prevent the cracking of Febased amorphous alloy in the process of laser 3D printing, and large size Fe-based amorphous alloy composites were successfully printed. It is found that the large-size Fe-based amorphous alloy composites formed by the above method have no macroscopic cracks and have good formability, but microcosmic cracks are still found in the local area of Fe-based amorphous alloy. Since Cu wrapped Fe-based amorphous alloy in the middle, these local microcracks did not expand, so it did not run through the whole material, so that the molding property of the printed Fe-based amorphous alloy composite material was not greatly affected.
2020 Vol. 63 (1/2): 87-93 [Abstract] ( 178 ) HTMLNew PDF (11151 KB)  ( 160 )
94 Development of Aviation Bearing Steel and Heat Treatment Technology
LIU Hongxiu, YU Xingfu, WEI Yinghua, LIU Tianming, GAO Yue
DOI: 10.16080/j.issn1671-833x.2020.01/02.094
With the development of aerospace technology, the kinds of bearing steel and temperature of bearing capacity are gradually improved. The heat treatment technology of bearing steel plays a key role in the service life and bearing performance of bearing steel. The heat treatment technology of bearing in domestic aerospace industry has been in the development stage, and there is still some room for improvement compared with the heat treatment technology of bearing steel of abroad. By collecting the heat treatment literature of bearing steel in recent years and decades, the development status of heat treatment technology of bearing steel in aerospace industry at home and abroad is summarized. The heat treatment technology of GCr15, 8Cr4Mo4V, G13Cr4Mo4Ni4V bearing steel is briefly described. The structure of martensite isothermal quenching, bainite isothermal quenching, martensite + bainite mixed isothermal quenching of GCr15 bearing steel is introduced. The heat treatment method, parameters and structure of M50 bearing steel of abroad are introduced in detail.
2020 Vol. 63 (1/2): 94-101 [Abstract] ( 205 ) HTMLNew PDF (34171 KB)  ( 220 )
  Notices
· 'Aeronautical Manufacturing technology ' is included in EI database
· China Science Citation Database (CSCD)
· Chinese S&T Journal Citation Reports (CJCR)
· World Journal Clout Index (WJCI) Report of Scientific and Technological Periodicals
· Supported in China Science and Technology Journal Excellence Action Plan
· Aeronautical Manufacturing Technology ranked No. 3 in Chinese S&T Journal Citation Reports (CJCR)
· High Quality Sci-tech Journal Classification Catalogue in Aerospace Field （2023）
· A Guide to the Core Journals of China (hosted by Peking University Library)
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