Recent Developments in the Design and Control of Cold Forming Processes

In the paper some problems of process design and control in metal forming are taken into account. In particular as far as the former aspect is concerned, the problem of the preform design in cold forging is analyzed: the contributions offered by several researchers are presented and an innovative design procedure is proposed. As well, the suitability of closed-loop control systems for metal forming applications is discussed with particular reference to sheet stamping operations; again, after an overview of the state of the art, the advantages offered by the application in this field of Artificial Intelligence techiniques is pointed out.

[1]  Giovanni Perrone,et al.  Design of a fuzzy controller for the deep drawing process by using GAs , 1998, 1998 Second International Conference. Knowledge-Based Intelligent Electronic Systems. Proceedings KES'98 (Cat. No.98EX111).

[2]  Fabrizio Micari,et al.  An Inverse Approach for the Design of the Optimal Preform Shape in Cold Forging , 1998 .

[3]  E. H. Mamdani,et al.  Application of Fuzzy Logic to Approximate Reasoning Using Linguistic Synthesis , 1976, IEEE Transactions on Computers.

[4]  Taylan Altan,et al.  Control of Blank Holder Force to Eliminate Wrinkling and Fracture in Deep-Drawing Rectangular Parts , 1995 .

[5]  Shiro Kobayashi,et al.  Preform design in plane-strain rolling by the finite-element method☆ , 1984 .

[6]  Taylan Altan,et al.  Metal Forming : Fundamentals and Applications , 1983 .

[7]  Alan N Bramley,et al.  A New Forging Preform Design Approach Using Reverse Simulation , 1998 .

[8]  Sidney Addelman,et al.  trans-Dimethanolbis(1,1,1-trifluoro-5,5-dimethylhexane-2,4-dionato)zinc(II) , 2008, Acta crystallographica. Section E, Structure reports online.

[9]  Nuno Rebelo,et al.  A new approach to preform design in metal forming with the finite element method , 1983 .

[10]  G. Widera,et al.  Handbook of Metal Forming , 1985 .

[11]  M. S. Joun,et al.  Optimal process design in steady-state metal forming by finite element method—II. Application to die profile design in extrusion , 1993 .

[12]  Soo-Ik Oh,et al.  A new method to design blockers , 1994 .

[13]  Feedback Control of the Sheet Metal Forming Process Using Drawbead Penetration as the Control Variable , 1995 .

[14]  S. M. Hwang,et al.  Application of a genetic algorithm to the optimal design of the die shape in extrusion , 1997 .

[15]  Taylan Altan,et al.  On the acceptable blank-holder force range in the deep-drawing process , 1992 .

[16]  Kozo Osakada,et al.  Controlled FEM Simulation for Determining History of Blank Holding Force in Deep Drawing , 1995 .

[17]  K. J. Weinmann,et al.  Friction Studies in Sheet Metal Forming Based on a Unique Die Shoulder Force Transducer , 1996 .

[18]  Klaus Siegert,et al.  Closed-Loop Control System for Blank Holder Forces in Deep Drawing , 1995 .

[19]  Alan N Bramley,et al.  Preform Design for Forging Rotationally Symmetric Parts , 1995 .

[20]  K. Siegert,et al.  Pulsating Blankholder Forces in the Deep-Draw Processes , 1997 .

[21]  J. R. Michler.  EXPERIMENTAL AND FINITE ELEMENT STUDY OF SHEET METAL FLOW IN A STRIP TEST APPARATUS WITH CONTROLLABLE DRAWBEAD PENETRATION , 1995 .