Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Analysis of Cushion Mechanism with Relief Valve for High-Speed Pneumatic Cylinders

고속 공기압 실린더용 릴리프밸브형 쿠션기구의 특성 해석

  • Kim, Do-Tae (School of Mechanical and Automotive Engineering, Kyungil University) ;
  • Zhang, Zhong Jie (Graduate School, Department of Mechanical Engineering, Kyungil University)
  • 김도태 (경일대학교 기계자동차학부) ;
  • 장중걸 (경일대학교 대학원)
  • Received : 2009.08.03
  • Accepted : 2009.10.12
  • Published : 2010.05.01
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Abstract

This paper presents a simulation model of a double-acting high-speed pneumatic cylinder with a relief valve type cushion mechanism. The model predicts piston motion, mass flow rate, pressure and temperature time histories of cushion chamber. Of interest here is to investigate the cushioning effect of varying the piston and piston-rod diameter, cushion ring diameter and length, and stoke in cushion mechanism. As a result, this cushion mechanism is found to be adequate under high-speed driving of pneumatic cylinders. The simulation model proposed here will be very useful to analyze the dynamic characteristics and to improve or design the better cushion mechanism in high-speed pneumatic cushion cylinders.

Keywords

References

  1. K. Saito, "Cylinder Cushioning Mechanism,"Journal of the Japan Fluid Power System Society, Vol.39, No.2, pp.97-102, 2008.
  2. Y. Kawakami, H. Noguchi and S. Kawai, "Some Consideration of the High-Speed Driving of Pneumatic Cylinders," Journal of the Japan Hydraulics and Pneumatics Society, Vol.21, No.3, pp.124-131, 1990.
  3. T. Fujita, L. R. Tokashiki, Y. Ishii and T. Kagawa, "Analysis of Pneumatic Cylinder Response Driven by Meter-out Circuit," Journal of the Japan Hydraulics and Pneumatics Society, Vol.29, No.4, pp.87-94, 1998.
  4. J. G. Lee, F. Qin, J. C. Lee and H. M. Shin, "Simulation Study on the Dynamic Analysis of Spring Type needle Valve to Absorb Surge Pressure in Pneumatic Cushion Cylinder," Journal of the Korean Fluid Power System Society, Vol.2, No.1, pp.15-22, 2005.
  5. Y. Yamashita, "Hydraulic and Pneumatic Components with Shock-absorbing Capacity (Shock -absorbing Technique at Air Cylinder," Journal of the Japan Fluid Power System Society, Vol.35, No.2, pp.106-109, 2004.