Experimental Study on Cushioning Characteristics of Pneumatic Cylinder with Meter-In/Meter-Out Control

  • Kim, Dong-Soo (Department of Industrial Technology, Korea Institute of Machinery and Materials) ;
  • Lee, Sang-Chun (School of mechanical engineering, Youngnam University)
  • 발행 : 2002.01.01

초록

Pneumatic cylinder is widely used fur mechanical handling systems. Often, the impact occurs at the both ends points of pneumatic cylinder and generates the destructive shock with in the structural operating members of the machine or equipment. To reduce the damage of system, therefore, shock absorbing devices are required. Cushioning of pneumatic cylinders at one or both ends of piston stroke is used to reduce the shock and vibration. The cylinder body have to withstand under conditions of high velocity and load. In this research pneumatic cushioning cylinder moving tests have been conducted for different load mass and supply pressure. The velocity of pneumatic cylinder actuation system which is set vertically with multiple orifice cushion sleeve is controled with the meter-in/out control system. This study examines the dynamic characteristics of pneumatic cylinder which are used as cushion devices. It turns out that the cushion pressure is mainly a function of the external load rather than the supply pressure. The cushion region characteristics was also revealed in the meter-in control system.

키워드

참고문헌

  1. Toshiharu Kagawa, and Masashi Shimizu, 'Air Temperature Change of Pneumatic Cylinder with Meter-out Control and Its effect on the Velocity,' ASME, pp. 549-554, 1991
  2. Wang, Y. T., Singh, R., and Guenther, D. A., 'Computer Simulation of a Shock Absorbing Pneumatic Cylinder,' Joumal of Sound and vibration, Vol. 93, No. 3, pp. 353-364, 1983
  3. Adams, G. O., Bonnell, R. D., and Funk, J. E., 'Computer Simulation of Fluid Power Systems,' National Conference Fluid Power, pp. 169-182, 1968
  4. Parker, G. A., and Bell, J. W., 'An Analysis of Pneumatic Cylinder Cushioning,' International Fluid Power Conference, E3-39-60, 1975
  5. David, R. O., 'A Computer Program for Simulation of the Air Cylinder Actuation Process,' University of Wisconsin-Madison, Mechanical Engineering Dept. Rep., No. Mechanical Engineering Fluid Power-905, 1990
  6. Yund, Q., and Li, Y., 'Computer-Aided Test and Analysis for the Dynamic Behaviour of Pneumatic Actuators and The Seal Friction,' International Conference of Fluid Power, pp. 701-703, 1987
  7. Hundal, M. S., 'Response of Shock Isolators with Linear and Quadratic Damping,' Joumal of Sound and Vibration, Vol. 76, No. 2, pp. 273-281, 1980 https://doi.org/10.1016/0022-460X(81)90354-0
  8. Romiti, A. and Raparelli, T., 'Dynamic Modeling and Simulation of Pneumatic System,' Intemational Sysposium of Fluid Power, pp.137-146, 1990
  9. Horlock, J. H., and Woods, W. A., 'The Thermodynamics of Charging and Discharging Processes,' Intemational Mechanical Engineering Paper Vol. 180, pp. 16-24, 1965
  10. Andersen, B. W., 'The Analysis and Design of Pneumatic Systems,' Wiley, 1967
  11. Kim, H. E., and Kim, D. S., 'Pneumatic Cylinder utilizing Cushioning Sleeves,' Quick Exhaust Valve and Quick Supply Valves, USA Patent5517898, 1996
  12. Kim, Dongsoo, and Kirn, H. Y.,'Pneumatic Cylinder,' Patent 166223, 1998
  13. Kim, Dongsoo, and Park, Jaebum, 'Characteristics Analysis of Charging and Discharging Process for Variable Volume,' KSME , pp. 98-105, 1994
  14. Kim, Dongsoo, and Park, Jaebum,'Experimenta1 Study on the Pneumatic Cushioning Cylinder,' KSME, pp. 106-118, 1994