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An empirically based computer-aided design procedure for closed die forgings

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Journal of Applied Metalworking

Abstract

The application of computer-aided design and manufacturing (CAD/CAM) techniques to forgings is gaining popularity as the resulting productivity improvements are becoming more and more apparent. The use of computerized techniques for the analysis and design for forging dies has considerably augmented the experience and skill of the die designer.

This paper describes a CAD system, implemented on a VAX 11/780 minicomputer, for the design of forging dies. This system uses a front end preprocessor to input the desired machined part geometry. Appropriate cross-sections of the machined parts are then chosen to design preform and finisher dies for most axisymmetric and nonaxisymmetric forging cross-sections. This concludes conversion of machined part geometry to the forged part geometry. Estimation of the number of preforming stages, design of flash geometry, and estimation of load and energy requirements of the process is based on widely used empirical, rule-of-thumb guidelines.

The results of the system are compared with those available in the current literature.

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References

  1. G. E. Dieter: “Mechanical Metallurgy,” 2nd ed., Publ., McGraw Hill Book Company, New York (1976).

    Google Scholar 

  2. T. Altan: “Computer-Aided Design and Manufacturing of Hot Forging Dies,”.J. Applied Metalworking, Vol. 2 (1982), pp. 77–85.

    Article  Google Scholar 

  3. German Standards, Din 7523 (1972).

  4. S. K. Biswas and W. A. Knight: “Towards an Integrated Design and Production System for Hot Forging Dies,”Int. J. Prod. Res., Vol. 14 (1976), pp. 23–49.

    Article  Google Scholar 

  5. K. Von Spies: “Intermediate Forms in Drop Forging and Their Production by Roll Forming,” Publ. West Deutscher-Verlag, Cologne (1959), Translated by the Ministry of Technology, U.K. (1969).

    Google Scholar 

  6. N. Akgerman, J. R. Becker, and T. Altan: “Preform Design in Closed Die Forging,”Metallurgia and Metal Forming, Vol. 40 (1973), pp. 135–138.

    Google Scholar 

  7. A. Chamouard: “Estampage et Forge” Publ, Dunod, Paris(1964).

    Google Scholar 

  8. N. Akgerman and T. Altan: “CAD/CAM of Forging Dies for Structural Parts,” Presented at the First North American Metalworking Conference (1973).

  9. S. K. Biwas, and W. A. Knight: “Preform Design for Closed Die Forgings: Experimental Basis for Computer Aided Design,”Int. J. Mach. Tools Des. and Res., Vol. 15 (1975), pp. 179–193.

    Article  Google Scholar 

  10. G. P. Teterin, et al.: “Shape Difficulty Criteria for Forgings,” Kuznechno-Shtamp, Proizv, Vol. 7 (1966).

  11. F. Neuberger, and L. Mockel: “Werkstattstecknik,” Vol. 51 (1961).

  12. T. Altan, and G. D. Lahoti: “Limitations, Applicability and Usefulness of Different Methods in Analyzing Forming Problems,”Anals of the CIRP, Vol. 28 (1979), pp. 473–483.

    Google Scholar 

  13. T. Altan and R. J. Fiorentino: “Prediction of Loads and Stresses in Closed Die Forgings,”J. Engr. for Industry (1971), pp. 477–486.

  14. J. E. Jackson, S. I. Hague, T. Gangjee, and A. D. Raikar: “Computer-Aided Forging Die Design” Theory and State-of-the Art,” Technical Report to Alcoa Foundation, 1984 March.

  15. A. Thomas, and I. Vannister: “The Accuracy of Forging Load Estimation in Drop Forging,” Proc. 17th Mach. Tool Des. and Res. Conf., Birmingham (1976).

  16. L. G. Drabing: “Forging Production Data,” Seminar at Alfred Herbert Col., Coventry (1966).

  17. S. H. Choi and T. A. Dean: “Computer Aids to Data Preparation for Cost Estimation,”Int. J. Mach. Tool Des. and Res., Vol. 24 (1984).

  18. H. Wolf: “Relation Between Flash Ratio, Flash Thickness, and Final Weight in Closed Die Forging,” (in German), Ferti-gungstechnik und Betrieb (1963), Betrieb (1963).

  19. Chinese Forging Handbook, Publ. Industrial Machinery Press, Beijing (1979).

  20. T. Altan and H. Henning: “Closed Die Forging of Round Shapes,”Metallurgia and Metal Forming, Vol. 39 (1972), pp. 83–88.

    Google Scholar 

  21. T. Altan et al.: Application of Computer-Aided Design and Manufacturing to Precision Isothermal Forging of Titanium Alloys. Final Report to Air Force Materials Laboratory, 1977, April.

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Authors and Affiliations

  1. Alcoa Laboratories, Alcoa Center, 15069, PA

    A. Raikar

  2. Mechanical Eng. Dept., Clemson University, USA

    I. Haque (Assoc. Prof.) & J. Jackson (Asst. Prof.)

Authors
  1. A. Raikar
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  2. I. Haque
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  3. J. Jackson
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Raikar, A., Haque, I. & Jackson, J. An empirically based computer-aided design procedure for closed die forgings. J. Applied Metalworking 4, 306–316 (1987). https://doi.org/10.1007/BF02833941

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  • DOI: https://doi.org/10.1007/BF02833941

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