Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Tension Control of a Wire Cut Discharge Machine Using ER Brake

ER 브레이크를 이용한 와이어 방전가공기의 장력제어

  • Published : 2004.10.01
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Abstract

This paper presents the tension control of a wire-cut discharge machine using electrorheological(E,R) fluid based brake system. On the basis of the tension level required in the machine, an appropriate size of the ER brake which features design simplicity, fast response and salient controllability is designed. Considering the Bingham property of ER fluid and actuator response time, the governing equation of the ER brake is derived. And a tension propagation of wire electrode is modeled via frequency response. The tension control performance of the discharge machine is simulated by using a robust sliding mode controller.

Keywords

References

  1. Dauw, D. F., Sthioul, H., Delpretti, R., and Tricarico, C., 1989, 'Wire Analysis and Control for Precision EDM Cutting,' Annals of the CIRP, Vol. 38, pp. 191-194 https://doi.org/10.1016/S0007-8506(07)62682-1
  2. Magara, T., Yamada, H., Yatomi, T., and Kobayashi, K., 1993, 'Study on Improvement of Surface Straightness in Wire-EDM,' Journal of Japan Society of Precision Engineering, Vol. 54, No.4, pp. 619-624
  3. Obara, H., Tsuji, M., Ohsumi, T., and Hatano, M., 2001, 'Development of Measuring System Equipped with Probe to Measure Fine Contour of Specimen,' J. of Japan Society of Precision Engineering. Vol. 67, No.4., pp. 555-567
  4. Guo, Z. N., Lee, T. C., Yue, T. M., and Lau, W. S., 1997, 'Study on The Machining Mechanism of WEDM with Ultrasonic Vibration of The Wire,' Journal of Materials Processing Technology, Vol. 69, pp. 212-221 https://doi.org/10.1016/S0924-0136(97)00021-6
  5. Gokler, M. I., and Ozanozgu, A. M., 2000, 'Experimental Investigation of Effects of Cutting Parameters on Surface Roughness in The WEDM Process,' International Journal of Machine Tools & Manufacture, Vol. 40, pp. 1831-1848 https://doi.org/10.1016/S0890-6955(00)00035-3
  6. Stevens, N. G., Sproston, J. L., and Stanway, R., 1998, 'An Experimental Study of Electro-Rheological TorqueTransrnission,' ASME Journal of Dynamic Systems, Measurement and Control, Vol. 110, pp. 182-188 https://doi.org/10.1115/1.3152669
  7. Carlson, D., and Duclos, T. F., 1990, 'ER Fluids Clutches and Brakes-Fluid Property and Mechanical Considerations,' Proceedings of the 2nd International Conference on ER Fluids, pp. 353-367
  8. Johnson, R., Bullough, W. A., Firoozian, R., Hosseini-Sianaki, A., Makin, J., and Xiao, S., 1991, 'Testing on a High Speed Electro-Rheological Clutch,' Proceeding of the 3rd International Conference on ER Fluids, pp. 424-441
  9. Choi, S. B., Cheong, C. C., and Kim, G. W., 1997, 'Feedback Control of Tension in a Moving Tape Using An ER Brake Actuator,' Mechatronics, Vol. 7, No.1, pp. 53-66 https://doi.org/10.1016/S0957-4158(96)00035-9
  10. Utkin, V. I., 1974, Sliding Modes and Their Application in Variable Structure Systems, MIR Publishers, Moscow