How to transform from a big nation in manufacturing  to  a  powerful one is a great subject of China's  economic development in the new era.This paper discussed  the guiding ideology,strategic deployment,basic policy and strategic measure of “made in China 2025” based on detailed analyses of current manufacturing situations  of China,and indicated  that “Internet+advanced manufacturing+modern service industry” will become a new engine of China's economic development.It  is pointed  out that digitization,networking and  intellectualization of manufacturing industries  are the core technologies of  a new round industrial revolution, and should be used as commanding point,breakthrough and main direction of  “made in China 2025”.An overall thorough interpretation of above points was put forward.

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.

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.

The industrial big data analytics is one of the most critical issues to enable the intelligent manufacturing.According to "the fourth paradigm:data-intensive scientific discovery", the "connection-prediction-regulation" scientific paradigm of big data-driven intelligent manufacturing was proposed.According to the data processing processes, the method system of fusion processing, correlation analysis, performance prediction and optimization decision was summarized.The big data platform was designed around the edge layer, platform layer and application layer, and the enabling technology of big data-driven intelligent manufacturing was introduced. Then four typical application scenarios were illustrated and reviewed:design, planning and scheduling, quality optimization, and machinery health management.

Heavy-duty CNC machine tools were the machine tools for overweight and oversized components in energy, transportation industries and so on, which restricted the development of these industries. Combining the challenges of the design and manufacture of heavy-duty CNC machine tools in China, the technological breakthroughs and innovations of heavy-duty CNC machine tools were introduced with the example of a CNC seven-axis five-link propeller machining heavy-duty turning and milling machine tool CKX5680. The on-service domestic heavy-duty CNC machine tools and the encountered problems in the machining prosesses were proposed.Future development trends of heavy-duty CNC machine tools were prospected.

Impact of pneumatic cylinder at the stroke terminal was considered to be an integrated system of vibrations, including slender piston rod, mass load, piston and end cover.Based on one-dimensional wave equation, a mathematical model of longitudinal   vibration of slender piston rod was established firstly. Impact force,contact displacement and  contact time were analyzed by means of mode superposition method.Then impact process of pneumatic cylinder was numerically simulated by nonlinear FEM software LS-DYNA.The variation of impact interface force and contact time were studied in detail under different masses of driven load and impact velocities. Compared with numerical solution of LS-DYNA,the accuracy of analytical solution was verified, and how impact force varies as velocity and load was concluded. Vibration frequencies of impact response were furtherly analyzed, and reasons for the changes of impact forces were studied. Research conclusions provide reference for design and applications of pneumatic cylinders.

The failure modes and research progresses of reliability for wind turbines at home and broad were analyzed. The failure modes, failure reasons and detection methods of key components in the wind turbines were summarized. Also, the frequently used methods of reliability analysis and research status of wind turbine reliability were analyzed. Then research focuses, research methods and measures to improve wind turbine reliability were presented. Combining with the engineering requirements and research status, the development tendency of wind turbine reliability was analyzed and the flowchart to investigate the smart health management technology of wind turbines was proposed. It is of great significance to reduce the costs of operations and maintenances and to improve the safety of wind turbines.

In order to promote the further research and clinical applications of force sensing technology in robot-assisted laparoscopic surgery， the research progresses were reviewed. Sensor force sensing was divided into two categories：electrical signal-based sensing and optical signal-based sensing. Some key indicators were analyzed， such as sensor position distribution on surgical instruments， mechanical structure， measurement range， measurement accuracy and electromagnetic compatibility. Sensors advantages and disadvantages were discussed. Sensorless force sensing was divided into two categories：vision-based sensing and dynamic model-based sensing. And the realization method， technical obstacle and error sources were analyzed. Finally， the development trend of force sensing technology in robot-assisted laparoscopic surgery was prospected. 

In response to the problems of imbalance between quantity of qualified and unqualified automotive parts for the product inspection datasets, a MCDC-MF-SMOTE oversampling method of quality inspection data was proposed based on density clustering and multi-process manufacturing features. Firstly, density clustering was carried out for the minority(unqualified) and the majority(qualified) samples respectively, and then oversampling weight was calculated by multi-process manufacturing data and cluster sample distribution. Data were generated in a few clusters according to oversampling ratio and cluster weights. The MCDC-MF-SMOTE method was used to generate a balanced quality dataset of automotive parts. Random Forest was used to rank feature importance to reduce feature dimension. LightGBM, XGBoost, SVM, and MNB models for Stacking were integration to predict unqualified products. After experiments, this method has higher stability and quality prediction performance. Compared with random sampling, the detection rate of unqualified products is increased by approximately 63%.

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.

This paper formulated several main types of vertical axis wind turbine and their characteristics, operation principles and applications were discussed. The improvement on performance in improving wind power coefficient and the latest development of the main key part were presented. The viewpoints are that vertical axis wind turbine will be the development tendency of wind power. Finally, the conclusion gives a simple view of problems that need further study on the basis of the shortage of the vertical axis wind turbine.

A joining and forming integrated process for high-strength steel/CFRP multi-material parts was developed, where the hot stamping technology was used to join the high-strength steel and CFRP prepreg. The preparation processes of multi-material composite parts under different quenching temperatures during hot stamping were studied and microscopic observation of the steel sheets was conducted. Then the three-point bending tests for the multi-material composite parts were carried out. The microscopic observation results show that the microstructure of the steel sheets is full martensite. The three-point bending tests indicate that the bending angles of the samples with no CFRP, with two layers CFRP, and with four layers CFRP are as 130°, 110° and 104°, respectively. Besides, the force-displacement curves of the bending tests were integrated to calculate the energy absorption of the samples. The results show that the energy absorption of the samples with no CFRP, with two layers CFRP, and with four layers CFRP are as 9410 J, 9692 J, and 10050 J. The energy absorption of the samples with two-layer CFRP and the samples with four-layer CFRP increase by 2.9% and 6.8% compared with the samples without CFRP.

The evolution mechanism of the DTSs was not clear, resulting in a lack of technology roadmap for DTS in the manufacturing fields. To fill this gap, firstly the existing problems and challenges in production shopfloors were analyzed in the view of the role and relationship of information flow, material flow and control flow. Then, after summarizing the research status of digital twin, the method how to construct an interactive, controllable and computable virtual workshop was proposed from three dimensions namely visualization, logic and data. Further,evolution mechanism from virtual shopfloors to digital model shopfloors, digital shadow shopfloors and DTSs was explored. Finally, the DTS was realized from digital, intelligent and smart stages, and the operation mechanism and enabling technologies of each stage were expounded, which provides reference for the promotion and applications of DTS in the manufacturing fields.

A novel method of the electric-field-driven (EFD) jet deposition micro-scale 3 D printing for fabricating high resolution circuit on paper-based surface was proposed.The basic principles and process flows of the proposed method were presented.The effects and rules of the main processing parameters (e.g.,the voltage,back pressure,printing speed) on the accuracy and quality of silver wires fabrications were revealed by a serial of experiments.Then,by using optimized parameters and the nano silver paste (75% silver content and 35 Pa·s (at 25℃) dynamic viscosity),the micro/nano-scale structure with high resolution and high aspect ratio was fabricated by multi-layer stacking on three kinds of paper substrates.For example,the line width with 15 layers stacking on RC photo paper may be kept at 10 μm,and the aspect ratio may be increased to 6.33,causing the 94.8% decrease of the resistance.Finally,flexible electromagnetic actuators (FEMAs) and complex conductive patterns were fabricated on different paper substrates to prove the printing ability.The results show that the new method of EFD 3 D printing technology combined with high viscosity and low temperature sintering nano silver paste may provide an effective way for high-performance paper-based electronics.

Based on the idea of collaborative optimization of production planning and scheduling,a rolling optimization model of planning and scheduling was established,and a "closed-loop integration-rolling rescheduling" strategy was proposed. When the production system had dynamic changes such as capacity constraints or order changes,the scheduling and planning formed a "closed-loop response mode",and further used the dynamic constraint balancing hybrid algorithm to optimize the production planning and scheduling. In order to verify the effectiveness and feasibility of the proposed cooperative optimization strategy,a typical example was selected for simulation. The results show that the strategy may effectively deal with the dynamic changes of the production system,and ensure the timely adjustment of the system scheduling optimization.

The development background and significance of cast-rolling bonding technology for laminated metal clad strip were introduced herein. The development status and research results of solid-liquid cast-rolling bonding processes and liquid-liquid cast-rolling bonding processes in recent years were summarized. The bonding mechanism differences among the traditional solid-solid bonding, solid-liquid bonding and the cast-rolling bonding were compared and analyzed. Combined with research status, the developments of the cast-rolling bonding technology for laminated metal clad materials were forecasted in terms of product specifications, product types, interface performance controls, and whole life cycle theory et al.

This paper reviewed the development routes of developed countries such as the United States， Japan， and Germany since the emergence of industrial engineering for more than 100 years， discussed the regular characteristics of enterprise management innovation， and drew the conclusion that smart manufacturing also needed IE/LM to provide management support. According to the smart manufacturing project cycle， the functions of IE/LM in smart manufacturing engineering were analyzed from the perspectives of basic preparation， scheme selection， and integration development. The framework of lean smart management system for smart manufacturing transformation of Chinese enterprises was given， and the improvement ideas and methods of smart-lean integration were explained based on a case. Finally， some key technologies of smart manufacturing management facing transformation and upgrading of Chinese enterprises were presented based on the actual needs of China. 

The positioning accuracy of industrial robots seriously affected the accuracy level and quality consistency of the auxiliary manufacturing products. The positioning accuracy reliability and positioning error compensation of industrial robots became the focus of academia and industry. The development status of positioning accuracy reliability and positioning error compensation of industrial robots were analyzed and discussed. The main research methods and focus problems in this field were summarized. Finally, the development directions of this field were prospected.

Based on the movement characteristics of the compliant transmission mechanisms, the typical flexible supporting transmission structures applied in fast-steering mirrors were introduced, several foreign early characteristic fast-steering mirrors and advanced fast-steering mirrors at the present stage were introduced and analyzed from the aspects of drive modes, structural layouts, supporting transmissions and working principles. In view of the current research situations of the compliant transmission mechanisms, the design methods, spatial mechanism configurations, stiffness analysis and overall dynamics analysis of the compliant transmission units applied in the fast-steering mirrors were concluded. Finally, the research and development directions of the compliant transmission mechanisms using in fast-steering mirrors were summarized.

Seafloor rock drill is the necessary equipment for marine geologic and environmental investigation. The present situations of deep-sea mineral resource core sampling technology and equipment were summarized, and the performance, structure and technology characteristics of several kinds of typical seafloor rock drill were focused on. The supporting and leveling mechanism technology, core sampling technology, drill string making and breaking and drill rods storage magazines technology, hydraulic system and pressure compensation technology, high voltage power supply and high-speed data communication technology by armored power & communication cable and launch and recovery technology of key technological problems of seafloor rock drill were analyzed. Based on analyses of the development of seafloor rock drill, it will develop into large-size, multiuse, intellectualization, professionalization, facilitation and truth-preserving sampling.

Aiming at current inadequate researches of adhesive assembly technology in aerospace products, especially in precision electromechanical products in China, the application types for adhesive connection technology in aerospace and application characteristics  of ultra-high/low temperature resistance, sealing, versatility, stability/low creep, and low volatility were briefly introduced. Research improvement of mechanism, key processes, static/dynamic mechanics properties, and fatigue and aging characteristics of adhesive bonding were summarised and analysed. Finally, development tendencies of the aerospace adhesive technology in the aspects of process parameter quantization, dynamic mechanics property investigation, and advanced adhesive equipment were pointed out.

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.

The theoretical system of intelligent manufacturing for HCPS confirmed the central position of human in the intelligent manufacturing system. Starting from the demand of human-machine collaboration in the intelligent manufacturing system, the emphases of human factors in HCIM were discussed from three levels such as behavior, intention, and cognition, based on the theory of gulf. Focusing on virtual-real fusion scenarios, multimodal human-machine interaction, cognitive quantification and other methods, the importance of human factor engineering in promoting the integration of human-computer intelligence was expounded. Finally, research direction and development suggestions of human-centered intelligent manufacturing from the implementation of HCPS intelligent manufacturing systems were put forward.

Based on the database of industrial enterprises above designated size in China, 15145 intelligent manufacturing enterprises were selected, combined with the field investigation in the main regions of intelligent manufacturing. After peer review, a list of 322 candidates was generated. Then experienced industry experts examined the ability of the candidate enterprises from two aspects of "exploitative innovation" and "exploratory innovation", and got the top 100 list of China's intelligent manufacturing enterprises. Subsequently, according to the industry classification, the list of intelligent machinery manufacturing enterprises was obtained. After summarizing the basic situation of intelligent machinery manufacturing enterprises on the list, the top 20 enterprises were analyzed, and the development path and future development trend of intelligent machinery manufacturing in China were given herein.

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.

The welded joints were susceptible to defects and stress concentration, rendering them vulnerable areas for fatigue crack initiation and propagation under fatigue loads. In comparison to homogeneous materials, the microstructure and stress localization in each of regions for the joints further complicated the fatigue issue in welded structures. Unlike ideal experimental conditions, the actual service environments of welded structures were intricate, it was necessity to consider the coupling characteristics between environmental factors and welded structures when predicting welded structure fatigue life. Therefore, the internal factors influencing welded structures were summarized and analyzed while reviewing existing life prediction models from perspectives encompassing complex loads and extreme service environment. Combining the latest research progresses, the recommendations were proposed to enhance fatigue life assessment methods for the welded structures.

To study the conceptual scheme construction of smart PSS and solve the complex characteristics and functional coupling characteristics of the system,the two instruments TRIZ function model and AHP were applied.In the conceptual design phase, TRIZ function model was used to qualitative analysis on the model.With the aid of AHP, different service function modules provided by the service providers for decision analysis were analyzed quantitatively by preferential integration related function module, and the construction of smart PSS conceptual scheme was formed. Finally, the validity of the method was verified by taking the service function module construction of three service providers as an example.

A mathematical model and related definitions of MOFJSP were introduced
 and the related theories and the research fruits of MOFJSP were summarized. The emphasis was focused on review both of the computational intelligent algorithms and the intelligent search methods. Some future research directions and contents of optimization scheduling algorithms were pointed out and suggestions of related researches in the future were proposed.

Firstly,this paper gave an overview of the application status of the angular contact ball bearings in motorized spindles and analysed the interrelationship between the preloading forces and the performance such as precision,spindle speed,service life of motorized spindles. Second,were the princi-ples and characteristics of the bearing positioning preloading technology and the constant pressure pre-loading technology reviewed. Then the adjusting preload technology and the automatic preload technolo-gy were commented with different preloading methods respectively,such as hydraulic preload equip-ment,shape memory alloy(SMA)spring,double metal sleeve,piezoelectric equipment,electromagnet-ic force equipment and centrifugal force equipment etc.. Finally,the future development trends of motor-ized spindle preloading technology was prospected.

This paper holds that,first of all,as the world economic competition framework is undergoing profound changes,major developed countries have proposed the strategy of “reindustrialization”,putting forward significant measures to revitalize manufacturing industries dependent on scientific and technological innovations.A new round of industrial revolution is deepening.The author continues to argue that,the digitalization and intellectualization of manufacturing industries can be viewed as key technologies for the new round of industrial revolution.On the one hand, they are the generic enabling technologies for the realization of mechanical products innovation,developing mechanical products towards “NC generation” and “intelligent generation”,boosting the functions,overall performance as well as market competitiveness of them fundamentally.On the other hand,they are the generic enabling technologies for the manufacturing technology innovation,developing manufacturing industries towards integrated manufacturing system featuring digitization and intellectualization, promoting the products design,manufacturing as well as management levels comprehensively,with the manufacturing service industry being developed at the same time,thus reforming the production mode and industrial pattern & structure of manufacturing industries greatly.Last but not least,the author believes that,the next twenty years can be regarded as a period characterized by precious opportunities of strategic importance,for China to transform from being a “big nation in manufacturing” to a “powerful nation in manufacturing”.China's manufacturing industries should and are most likely to make leaping progress during this time span,especially to make strategic breakthroughs in “digitization and intellectualization of manufacturing industries”,thus making historical contributions for the modernization of China.

Combined the traditional equidistant modification method and radial-moving modification method, a new composite modification method of equidistant & radial-moving(ERM) for cycloidal teeth was proposed based on optimized carrying capacity. Taking the cycloidal pin of a RV-40E reducer in industrial robots as an example, the mechanics analysis of the transmission was carried out, aiming at optimal carrying capacity, the mathematical model of the cycloidal profile modifications was established as well as optimized by the grid method. Finally, the ERM modification tooth profiles of cycloidal gears were obtained by using numerical solution. The processing technology of cycloidal gears was designed. A cycloidal gear optimized by ERM modifications and a cycloidal gear designed by traditional fitting angle(TFA) modifications used as a comparison were manufactured respectively, and their corresponding RV reducers were assembled to conduct performance tests respectively. The testing results show that the transmission efficiency of the new RV reducer made from the cycloidal gears modified by ERM method is as high as 85%. Compared with the RV reducer made from the cycloidal gears modified by TFA method, the noise and temperature rise of the new RV reducers are evidently reduced under the heavy load conditions. Overall, the carrying capacity of the new RV reducers is improved significantly.

Hybrid flow shop scheduling problems (HFSP), one of popular research topics in the field of shop scheduling, several alternative parallel machines in all or part of stages of the flow-shop were introduced, and production capacity and flexibility of the shop were improved. Hybrid flow-shop scheduling methods were reviewed according to the number of stages and machine characteristics herein. Related extension problems in background of practical engineering were systematically summarized, and the existing problems and possible solutions were pointed out. Combined with development trend of operations research, application prospect of HFSP in emerging fields was discussed. Finally, some possible research directions in future were pointed out.

In various renewable energy sources, wind energy is one of the fastest-growing energy sources worldwide and has a good prospect of development and utilization. The present situation of wind turbines industries was outlined and analyzed herein. The development tendency of wind turbines was summarized; the research situations and problems were analyzed, including aerodynamic analysis on wind rotors, analysis and calculation of loads, structure dynamics and control, energy transfer and control and pitch system. Finally, it is pointed out that since the wind turbine is sophisticated nonlinear system related to theory of multi-disciplines, involving multi-physical coupling field and multi-physical process, the thinking method of system science should be adopted in the future research based on multi-discipline knowledge.

High-performance manufacturing is the integrated manufacture of function and geometry, which aims at the precise guarantee of key parts of high-end equipment and products. It indicates the great progresses from the conventional manufacture with requirements of geometrical dimensioning and tolerancing to the advanced manufacture with primary requirements of high performance. From the points of view of the current status, requirements and development trend of manufacture,the features, facing challenges and its classification of high-performance manufacturing, as well as the connotations of high-performance parts, were analyzed and explained in depth combined with application examples. It provides a feasible route and solution strategy for the precise manufacture of a large number of key parts in high-end equipments.