Abstract
The binder force in sheet metal forming controls the material flow into the die cavity. Maintaining precise material flow characteristics is crucial for producing a high-quality stamped part. Process control can be used to adjust the binder force based on tracking of a reference punch force trajectory to improve part quality and consistency. The purpose of this chapter is to present a systematic approach to the design and implementation of a suitable MIMO process controller. An appropriate process model structure for the purpose of controller design for the sheet metal forming process is presented and parameter estimation for this model is accomplished using system identification methods. This paper is based upon original experiments performed with a new variable blank holder force (or variable binder force) system that includes 12 hydraulic actuators to control the binder force. Experimental results from a complex-geometry part show that the MIMO process controller, designed through simulation is effective.
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References
Adamson, A., Ulsoy, A.G., Demeri, M., (1996). Dimensional Control in Sheet Metal Forming via Active Binder Force Adjustment. SME Transactions. Vol. 24, pp. 167–178.
Astrom, Karl J., Wittenmark, Bjorn, (1990). Computer-Controlled Systems, Prentice Hall, pp. 416–436.
Bohn, Stefen U. Jurthe, Weinmann, Klaus J., (1998). A New Multi-point Active Drawbead Forming Die: Model Development for Process Optimization. SAE Paper No. 980076, pp. 24–30.
Doege, E., Elend, L.E., (2001). Design and application of pliable blank holder systems for the optimization of process conditions in sheet metal forming. J of Materials Proc. Tech., Vol 111, pp. 182–187.
Doege, E., Schmidt-Jurgensen, R., Huinink, S., Yun, J.-W, (2003). Development of an optical sensor for the measurement of the material flow in deep drawing processes. CIRP Annals–Manufacturing Technology, Vol 52, n1, pp. 225–228.
Doege, E., Seidel, H.J., Griesbach, B., Yun, J.W., (2002). Contactless on-line measurement of material flow for closed loop control of deep drawing. J of Materials Proc. Tech., 130–131, pp. 95–99.
Hardt, D. E., (1993). Modeling and Control of Manufacturing Processes: Getting More Involved. Journal of Dynamic Systems, Measurement, and Control, Vol. 115, pp. 291–300.
Hardt, D. E., Fenn, R. C., (1993). Real-Time Control of Sheet Stability during Forming, Journal of Dynamic Systems, Measurement, and Control, Vol. 115, pp. 301–308.
Hollomon, J.H., (1945). Plastic Flow of Metals. Metal Tech., Vol. 12.
Hsu, C.W., Ulsoy, A.G., Demeri, M.Y., (2002). Development of process control in sheet metal forming. J. of Materials Proc. Tech., Vol. 127, pp. 361–368.
Hsu, C.W., Ulsoy, A.G., Demeri, M.Y., (2000). An Approach for Modeling Sheet Metal Forming for Process Controller Design. ASME J. Manuf. Sci. Eng., 122, pp. 717–724.
Hsu, C.W., Ulsoy, A.G., Demeri, M.Y., (1999). Process Controller Design for Sheet Metal Forming. American Control Conference, Vol. 1, pp. 192–196.
Kergen, R., Jodogne, P., (1992). Computerized Control of the Blankholder Pressure on Deep Drawing Process. SAE Paper No. 920433, pp. 51–55.
Lo, Sy-Wei, Jeng, Guo-Ming, (1999). Monitoring the Displacement of a Blank in a Deep Drawing Process by Using a New Embedded-Type Sensor. Int J Adv Manuf Tech., vol. 15, pp. 815–821.
Manabe, K., Koyama, H., Katoh, K., Yoshihara, S., Yagami, T., (2002). Development of a combination punch speed and blank-holder fuzzy control system for the deep-drawing process. J of Materials Proc. Tech., 125–126, pp. 440–445.
Michler, J.R., Weinmann, K.J., Kashani, A.R., Majlessi, S.A., (1994). A Strip drawing simulator with computer-controlled drawbead penetration and blankholder pressure. J. Materials Proc. Tech., Vol. 43, pp. 177–194.
Safonov, Michael G., (1980). Stability and Robustness of Multivariable Feedback Systems. MIT press.
Sheng, Z. G., Jirathearnat, S., Altan, T., (2004). Adaptive FEM Simulation for Prediction of Variable Blank Holder Force in Conical Cup Drawing. International J. of Machine Tools & Manuf., Vol. 44, pp. 487–494.
Siegert, K., Hohnhaus, J., Wagner, S., (1998). Combination of Hydraulic Multipoint Cushion System and Segment-Elastic Blankholders. SAE Paper No. 98007, pp. 51–55.
Siegert, K., Ziegler, M., Wagner, S., (1997). Loop Control of the Friction Force: Deep drawing process,” J. of Materials Proc. Tech., Vol. 71, pp. 126–133.
Sklad, M.P., Harris, C.B., Slekirk, J.F., Grieshaber, D.J., (1992). Modelling of Die Tryout. SAE Paper No. 920433, pp. 151–157.
Sunseri, M., Cao, J., Karafillis, A.P., Boyce, M.C., (1996). Accommodation of Springback Error in Channel Forming Using Active Binder Force: Control Numerical Simulations and Experiments,” J. of Engin. Materials and Tech., Vol. 118, pp. 426–435.
Wang, L., Lee, T.C., (2005). Controlled strain path forming process with space variant blank holder force using RSM method. J. of Materials Processing Tech., Vol. 167, pp. 447–455.
Yagami, T., Manabe, Ken-ichi, Yang, M., Koyama, H., (2004). Intelligent sheet stamping process using segment blank holder modules. J. of Materials Proc. Tech., Vol. 155–156: 2099–2105.
Ziegler, M., (1999) Pulsating Blankholder Technology. SAE Paper No. 1999-01-3155: 1–5.
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Lim, Y., Venugopal, R., Ulsoy, A.G. (2014). Process Control. In: Process Control for Sheet-Metal Stamping. Advances in Industrial Control. Springer, London. https://doi.org/10.1007/978-1-4471-6284-1_6
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DOI: https://doi.org/10.1007/978-1-4471-6284-1_6
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