Table of Content

10 January 2020, Volume 31 Issue 01

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Forge Ahead for 30 Years, Carrying Forward Cause into Future and Create Brilliant—In Celebration of 30th Anniversary of China Mechanical Engineering

WANG Guobiao

2020, 31(01):  6-12. 

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Since the journal publicated in 1990, China Mechanical Engineering journal played an important role in the field of Chinese mechanical engineering.The development history of China Mechanical Engineering journal in the past 30 years was reviewed.The publication conditions of the research papers financed by the Division of Mechanical Engineering of the National Natural Science Foundation of China, and the developing trends and progresses of the mechanical engineering discipline were analyzed. Finally,several expectations and suggestions for the developing of the journal were also proposed.

Innovation·Fundamentals·Intelligence—for Strong Manufacturing Industry

LIU Baicheng,

2020, 31(01):  13-18. 

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National strategies to re-vitalizing manufacturing industry from United States, United Kingdom and Germany were studied, and intelligent manufacturing would be their main trend. China manufacturing industry was big but not strong. China manufacturing values added were in the first position of the world, the weakness in innovation ability and lack of key competitive technologies were pointed. Therefore, China national strategy for strong manufacturing industry focusesd on “five important projects”, and intelligent manufacturing would be the first priority. In addition, digital design and manufacturing was the critical and fundamental technology for intelligent manufacturing, while modeling and simulation would be the scientific base. It should be stressed that China are on the way to build strong manufacturing industry as well as intelligent manufacturing.

Additive Manufacturing—Current Situation and Future

LU Bingheng,

2020, 31(01):  19-23. 

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The up-to-date progress in the additive manufacturing technology has been fully reviewed in this article, and the associated opportunity & challenges were also discussed. It has been proposed that the future directions of the additive manufacturing technology should be focused on the nonequilibrium solidification of the metal printing, the novel theory development of manufacturing under extreme conditions, additive manufacturing of materials & structure in-gradient, the regeneration and functionalization of the engineered scaffolds, theory of life science etc. Constructive ideas should be encouraged, to be led by technical progress, to be driven by technological innovation, and to be targeted by the industrial development, aiming to provide the solid foundation for the innovative national construction.

Study on Architecture of Intelligent Manufacturing Theory

LIU Qiang,

2020, 31(01):  24-36. 

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The connotation and features of the intelligent manufacturing were analyzed based on reviewing the development and challenges to the manufacturing technology. A new understanding to the intelligent manufacturing at the era of industry 4.0 was proposed, followed by a suggested overall architecture of the intelligent manufacturing theory. The architecture included 8 modules such as theoretical fundamentals, technological fundamentals, supporting technologies, enabling technologies, kernel and themes, development paradigms, technological road-map and objective, etc. The concrete contents were set forth to the several issues of the modules above respectively, with the fundamental rules and technological phases to promote and practice the intelligent manufacturing. Finally, the future factory and manufacturing were discussed prospectively.

Industrial AI:A Systematic Framework for AI in Industrial Applications

Jay LEE, Jaskaran SINGH, Moslem AZAMFAR, SUN Keyi

2020, 31(01):  37-48. 

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AI is impacting on industrial production and our way of life beyond our imagination. Various countries all over the world have launched national AI initiatives highlighting the significance and necessity of AI in smart industries. But at the same time, practical application AI to solve real time manufacturing issues is facing challenges that cannot be ignored. The biggest challenge right now is finding specific applications that can provide value to meet the growing expectations of the market and capital. In order to present a clear roadmap for systematic development and implementation of AI in industrial systems, a systematic framework termed as “Industrial AI” was presented along with its key enabling technologies. This paper presents a comprehensive overview of the important role of key enabling technologies of Industrial AI in the manufacturing industry in general and how their systematic adoption will aid in producing new value-creation opportunities and avoidance of problems that haven't even occurred yet.

Research on Robotic Measurement-Operation-Machining Technology and Its Application

TAO Bo, ZHAO Xingwei, LI Rupeng, DING Han

2020, 31(01):  49-56. 

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This paper described the current state and challenges for robotic machining, where the integrated measurement-operation-machining technology was reviewed. To analyze the error sources during the integrated measurement-operation-machining technology and the influences on the machining quality, an error model was established. The errors might be classified into the measurement errors, errors by coordinate transformation, and robot motion errors. Based on the error transform model, the influences of different error sources on the machining quality were analyzed. The integrated measurement-operation-machining technology was used to accomplish the polishing tasks of an aircraft assemble gasket. The robotic machining test rig consisted of an industrial robot with a force-controlled polishing head. The measured point cloud data were used to generate the robotic machining path, while the force controlled polishing head was assembled at the end of the robot to compensate the position error. Experiments testify the feasibility of the integrated measurement-operation-machining technology for the varied-thicken aircraft assembly gasket polishing.

Theoretical Difficulties and Research Progresses of Mechanism Reconfiguration in Mechanisms—Evolution Connotation, Furcation Principle, Design Synthesis and Application of Metamorphic Mechanisms

KANG Xi, DAI Jiansheng,

2020, 31(01):  57-71. 

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The development of productivity and the innovation of engineering technology required mechanisms to have the multi-function of self-reorganization and reconfiguration to meet the needs of complex working conditions. Reconfigurable mechanisms had variable mobility and varying configurations to meet the requirements of multiple tasks, multiple working conditions and multiple functions. However, the research history of mechanism evolution and furcation principle, which determined the design method, was still not fully understood by scholars. Herein, from the point of view of the evolution and furcation principle of metamorphic mechanisms, based on screw theory, Lie group, Lie algebra and differential manifold, the mechanism evolution and the interrelationship between the mechanism motions and the constraint spaces were revealed. Then, the furcation principle and the controllable singularity configuration in the evolution of the mechanism were explored. Moreover, the historical relationship between metamorphic mechanisms, origami mechanisms and deployable mechanisms was discussed, and the configuration design, performance synthesis, new design concept of metamorphic mechanisms and their innovative application were reviewed.

Reliability Test Technology of Mechanical Products—Overview and Prospect

CHEN Wenhua, HE Qingchuan, PAN Jun, QIAN Ping, ZHONG Liqiang

2020, 31(01):  72-82. 

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An overview of the development of reliability engineering was provide， and the recent developments of reliability test and problems with reliability test of mechanical products were summarized. The developments of methods on how to conduct statistical analysis and design test plan of accelerated life test and accelerated degradation test were reviewed, and also the developments of high accelerated life test and high accelerated stress screening test were reviewed. The development prospect of reliability test technology of mechanical products was presented and the guidelines were provided to promote the engineering applications of reliability test theory and methods.

5D Printing—Fabrication of Biological Function Tissue

LI Dichen, HE Jiankang, WANG Ling, GAO Lin, LU Bingheng

2020, 31(01):  83-88,99. 

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Biofabrication is an emerging multidiscipline by integrating the manufacturing technology and the life science. It offeres new technical supports for the manufacturing of large scale human tissue/organs, as well as important opportunities for the innovative development in manufacturing technology. For the future development of manufacturing, a 5D Printing was proposed. The connotation of 5D printing was discussed, and the key technical issues were put forward. Combined with the development of biofabriction technology, the fabrication of myocardium scaffolds, the brain-like neuron tissue manufacturing, and the manufacturing of the life machine hybrid crawling robots were introduced, providing new solutions for the biofabrication technology and its innovative progresses.

Progresses in Fabrication of High-performance Metals by Using Cryorolling

YU Hailiang,

2020, 31(01):  89-99. 

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Compared with conventional hot rolling, warm rolling and cold rolling, cryorolling was an innovative technique. During cryorolling, the ultralow temperature suppressed the dislocation movement and dynamic recovery during deformation, thereby enhancing the grain-refinement, and enhancing both strength and ductility of metals and alloys. The progresses in development of high-performance metals and alloys by using cryorolling were introduced, including aluminium, copper, titanium, as well as metal laminated composites. Finally, prospects for the preparation of high-performance metal materials by using cryrolling in the future were also presented.

Recent Advances and Analysis of Quality Monitoring and Control Technologies for RSW

XIA Yujun, LI Yongbing, LOU Ming, LEI Haiyang

2020, 31(01):  100-125. 

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The research progresses of the RSW quality monitoring technologies in the past 60 years were summarized from three aspects: process signal monitoring, online quality assessment and real-time process control. The advantages, disadvantages, application status and development trend of the technologies were analyzed and evaluated comprehensively, aiming at providing useful references to achieve a further breakthrough and promote the transformation and upgrading of thin-walled structure product manufacturing industry.