Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Design of a Stabilized Milling Machine for the Improved Precision Machining

가공정도 향상을 위한 Milling Machine의 안정화 설계

  • Ro, Seung-Hoon (Department of Intelligent Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Lee, Min-Su (School of Mechanical Engineering Kumoh National Institute of Technology) ;
  • Park, Keun-Woo (School of Mechanical Engineering Kumoh National Institute of Technology) ;
  • Kang, Hee-Tae (Graduate School of Kumoh National Institute of Technology) ;
  • Lee, Jong-Hyung (Department of Intelligent Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Yang, Seong-Hyeon (Taekyeung University)
  • 노승훈 (금오공과대학교 지능기계공학과) ;
  • 이민수 (금오공과대학교 기계공학부) ;
  • 박근우 (금오공과대학교 기계공학부) ;
  • 강희태 (금오공과대학교 대학원) ;
  • 이종형 (금오공과대학교 지능기계공학과) ;
  • 양성현 (대경대학교)
  • Received : 2011.01.10
  • Accepted : 2011.05.24
  • Published : 2011.05.31
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Abstract

Since the most exclusive machines of the modern industries which require the nano precision rates are evolved from the machine tools, the design of the stable machine tool structure is very critical. Exclusive machines for the modern industries such as semiconductor, solar cell and LED have surface machining processes which are similar to the face cutting and grinding of conventional machine tools. This study was initiated to stabilize a milling machine structure and further to help design those exclusive machines which have similar machining mechanisms. The vibrations inherent to the machine tool structures hurt the precision machining as well as damage the longevity of the structures. There have been numerous researches in order to suppress the vibrations of machine tool structures using the extra modules such as actuators and dampers. In this paper, the dynamic properties are analyzed to obtain the natural frequencies and mode shapes of a machine tool structure which reflect the main reasons of the biggest vibrations under the given operating conditions. And the feasibility of improving the stability of the structure without using any additional apparatus has been investigated with minor design changes. The result of the study shows that simple changes based on proper system identification can considerably improve the stability of the machine tool structure.

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