数控机床产业强势增长

The machine tool industry is an industry which provides production equipment for the equipment manufacturing industry, and the machine tool is the parent machine for equipment manufacturing, playing a key part in the industry. The equipment manufacturing industry, for example, the automobile industry, uses more than 60% of its fixed asset investment in the purchase of machine tools. The numerical control （NC） machine tool, as a mainstream product of the machine tool sector, has become a key piece of equipment for achieving modernisation of equipment manufacturing. It is the realistic requirement to speed up development of NC machine production for the development of China＇s equipment manufacturing industry.     

ON INTELLIGENTIZED TECHNOLOGIES FOR MODERN WELDING MANUFACTURING

A short survey on researching and developing status of intelligent technologies in modernwelding manufacturing is given. According to the developing trend of advanced manufacturing tech-nology, a concept on intelligentized welding manufacturing engineering (IWME), is presented forsystematization of researching and developing domains on welding automation, intelligentized welding,robotic and flexible welding and advanced welding manufacturing technologies. And key technologiesof welding intelligent manufacturing and its developing trend in the future are investigated.     

Special issue on future digital design and manufacturing: Embracing industry 4.0 and beyond

Industry 4.0 as referred to the fourth industrial revolution has endorsed in several national manufacturing initiatives or development plans such as in Germany,the UK,USA and China.A set of important pervasive and secondary technologies for future manufacturing activities have been identified such as additive manufacturing,sensor technology,big data analytics,Internet of things,robotics,smart manufacturing,cloud computing,and nanotechnology.These exponentially growing technologies are radically changing industrial processes,accelerating them and making them more flexible and smarter.The interplay among "Internet of Things,services,data and people" will transform the future of manufacturing.     

Digital Factory—A Technology Show Case for Teaching and Research in Digital Maunfacturing

With the advancing digital technology and information tools in networking,the core of manufacturing activities has shifted from the physical production of goods to the systematic processing of knowledge.Teh competitiveness of tomorrow‘s manufacturing enterprise lies in the operation of such digital factory in parallel with the physical one.This change in manufactring in the digital age is taking place not only in Hong Kong but worldwide,This paper describes the development of establishing a digital factory laboratory in the Department of Industial and Systems Engineeing of The Hong Kong Polytechnic University.The Digital Factory is a focus for teaching ,research and technology transfer in the area of digital manufacturing,The paper also describes an application case of vitual manufacturing in whic computer simulation models of a production line of an AC motor are developed for investigation.     

Advanced Industrial Engineering in Next Generation of Manufacturing Systems

The article deals with possible approaches to the development trends in the industrial engineering in manufacturing organizations. The authors emphasize the need for integration of advanced industrial engineering in the next generation of manufacturing systems, which responds to new trends of production, innovation and advanced technology. This integration represents a sustainable development, so that humanization of work are increased, more effective use of natural and energy resources are achieved and production costs are reduced. Trends in the products manufacturing must meet both industrial engineering as well as production management. The development trends in the industrial engineering in manufacturing organizations must use methods and tools of advanced industrial engineering to achieve competitiveness. The second part of this article deals with specification of these approaches in next generation of production systems.     

Optimization of steel bar manufacturing process using six sigma

Optimization of a manufacturing process results in higher productivity and reduced wastes. Production parameters of a local steel bar manufacturing industry of Pakistan is optimized by using six Sigma-Define, measure, analyze, improve, and control- methodology. Production data is collected and analyzed. After analysis, experimental design result is used to identify significant factors affecting process performance. The significant factors are controlled to optimized level using two-level factorial design method. A regression model is developed that helps in the estimation of response under multi variable input values. Model is tested, verified, and validated by using industrial data collected at a local steel bar manufacturing industry of Peshawar(Khyber Pakhtunkhwa, Pakistan). The sigma level of the manufacturing process is improved to 4.01 from 3.58. The novelty of the research is the identification of the significant factors along with the optimum levels that affects the process yield, and the methodology to optimize the steel bar manufacturing process.     

High-efficiency approach for fabricating MTE rotor by micro-EDM and micro-extrusion

Micro-gas turbine engine（MTE） rotor is an important indicator of its property, therefore, the manufacturing technology of the microminiature rotor has become a hot area of research at home and abroad. At present, the main manufacturing technologies of the MTE rotor are directed forming fabrication technologies. However, these technologies have a series of problems, such as complex processing technology high manufacturing cost, and low processing efficiency, and so on. This paper takes advantage of micro electric discharge machining（micro-EDM） in the field of microminiature molds manufacturing, organizes many processing technologies of micro-EDM reasonably to improve processing accuracy, presents an integrated micro-EDM technology and its process flow to fabricate MTE rotor die, and conducts a series of experiments to verify efficiency of this integrated micro-EDM. The experiments results show that the MTE rotor die has sharp outline and ensure the good consistency of MTE rotor blades. Meanwhile, the MTE rotor die is applied to micro extrusion equipment, and technologies of micro-EDM and micro forming machining are combined based on the idea of the molds manufacturing, so the MTE rotor with higher aspect ratio and better consistency of blades can be manufactured efficiently. This research presents an integrated micro-EDM technology and its process flow, which promotes the practical process of MTE effectively.     

Analytical Modelling and Experiment of Novel Rotary Electro-Mechanical Converter with Negative Feedback Mechanism for 2D Valve

The manufacturing of spiral groove structure of two-dimensional valve(2D valve) feedback mechanism has shortcomings of both high cost and time-consuming. This paper presents a novel configuration of rotary electro-mechanical converter with negative feedback mechanism(REMC-NFM) in order to replace the feedback mechanism of spiral groove and thus reduce cost of valve manufacturing. In order to rapidly and quantitative evaluate the driving and feedback performance of the REMC-NFM, an analytical mod...     

Future Digital Design and Manufacturing Technologies for Manufacturing Innovation:Embracing Industry 4.0 and Beyond

正Industry 4.0 as referred to a fourth industrial revolution has endorsed in several national manufacturing development plans such as in Germany,the UK,and China.A set of important pervasive and secondary technologies for future manufacturing activities have been identified such as additive manufacturing,sensor technology,big data analytics,     

Allowance Extraction Considering of Inner and Outer Contour and Experimental Research on Belt Grinding of Hollow Blade

Aero-engine fan blades often use a cavity structure to improve the thrust-to-weight ratio of the aircraft. However, the use of the cavity structure brings a series of difficulties to the manufacturing and processing of the blades. Due to the limitation of blade manufacturing technology, it is difficult for the internal cavity structure to achieve the designed contour shape, so the blade has uneven wall thickness and poor consistency, which affects the fatigue performance and airflow dynamic perf...