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

An Erratum to this article was published on 12 December 2014

Abstract

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.

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Corresponding author

Correspondence to Zhenlong Wang.

Additional information

Supported by National Basic Research Program of China (973 Program, Grant No. 2012CB934102), National Natural Science Foundation of China (Grant No. 50835002), and National Science Foundation for Young Scientists of China (Grant No. 51105111)

GENG Xuesong, male, born in 1984, is currently a PhD candidate at Harbin Institute of Technology, China. He got his MS degree in mechanical manufacturing and automation from Harbin Institute of Technology, China, in 2008. He is currently interested in the research and development of micro-EDM and micro-WEDM.

CHI Guanxin, male, born in 1968, is currently a professor and a PhD candidate supervisor at School of Mechatronics Engineering, Harbin Institute of Technology, China. His main research interests include micro EDM technique and equipment, CAD/CAM system development in EDM.

WANG Yukui, male, born in 1977, is currently an associate professor and a PhD master supervisor at School of Mechatronics Engineering, Harbin Institute of Technology, China. His main research interests include micro EDM control technique.

WANG Zhenlong (corresponding author), male, born in 1963, is currently a professor and a PhD candidate supervisor at School of Mechatronics Engineering, Harbin Institute of Technology, China. He is also the director of Key Laboratory of Micro-systems and Micro-structures Manufacturing, Harbin Institute of Technology, China. His main research interests include non-traditional machining, micro machining, and precision machining.

An erratum to this article is available at http://dx.doi.org/10.3901/CJME.2014.1210.304.

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Geng, X., Chi, G., Wang, Y. et al. High-efficiency approach for fabricating MTE rotor by micro-EDM and micro-extrusion. Chin. J. Mech. Eng. 27, 830–835 (2014). https://doi.org/10.3901/CJME.2014.0527.101

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Keywords

  • integrated micro-EDM
  • micro extrusion
  • MTE rotor
  • efficiency
  • consistency