A New Computerized System for Piercing and Bending Progressive Die Design

Abstract:

A Progressive die is used to transform flat strips of sheet metal into a formed part. This transformation is performed progressively by a series of stations that cut and bend the material into a desired shape. The progressive dies reduce the time and cost of producing complex sheet metal components. The design and manufacture of these dies are difficult. CAD/CAM systems have been proved very useful tools for this task. In this paper, a new system for design of the piercing and bending progressive die is described. In this system, piercing and bending operation are separated and the sequencing of each type is done individually. In this system first sequence of the piercing stations are determined then bending operations are sequenced based on a classification and fuzzy algorithm. Also, neural network systems are used to determine final angle of bends and die parameters. The capability of the system is shown using a sheet metal component.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 4823-4831
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.4823
• Online since: October 2011
• Authors: Mohammad Ali Farsi
• Keywords: Computer Aided Process Planning, Neural Network (NN), Operation Sequencing, Progressive Die

References

[1] G. Schaffer, Computer design of progressive dies, Am. Mach, vol. 22, 1971, pp.73-75.

[2] Fogg and Jaimeson, The influencing factors in optimizing press tool die layouts and a solution using computer aids, CIRP Annals, vol. 24, 1975, pp.429-434.

[3] Y. Shibata and Y. Kunimoto, Sheet metal CAD/CAM system", Bull. Jpn. Soc. Prec. eng., vol. 15, 1981, pp.219-224.

[4] S. Nakahara, T. Kojima, S. Tamura, A. Funimo, S. Choichiro and T. Mukumuru, Computer progressive die design, Proceedings of 19th MTDR conference, 1978, pp.171-176.

[5] J.C. Choi, B.M. Kim, H.Y. Cho, Chul Kim, J.H. Kim. An integrated CAD system for the blanking of irregular-shaped sheet metal products", Journal of Materials Processing Technology, vol. 83, 1998, pp.84-97.

DOI: 10.1016/s0924-0136(98)00046-6

[6] B.T. Cheok, A.Y.C. Nee, Trends and developments in the automation of design and manufacture of tools for metal stampings, J. of Materials processing technology, vol. 75, 1998, pp.240-252.

DOI: 10.1016/s0924-0136(97)00370-1

[7] S.K. Ong, L.J. De Vin , A.Y.C. Nee, and H.J.J. Kals. Fuzzy set theory applied to bend sequencing for sheet metal bending, Journal of Materials Processing Technology, vol. 79, 1997, pp.29-37.

DOI: 10.1016/s0924-0136(96)00035-0

[8] J.H. Kim, Chul. ‏ Kim, and Y.J. Chang. Development of a process sequence determination technique by fuzzy set theory for an electric product with piercing and bending operation, Journal of Advanced Manufacturing Technology, vol. 31, 2006, pp.450-464.

DOI: 10.1007/s00170-005-0227-2

[9] Joost R. Duflou, Nguyen THM, Kruth JP, Cattrysse D. Automated tool selection for computer-aided process planning in sheet metal bending. CIRP Ann Manuf Technol. vol. 54(1), 2005, p.451–454.

DOI: 10.1016/s0007-8506(07)60142-5

[10] M.A. Farsi, B. Arezoo, Development of a new method to determine bending sequence in progressive dies, It is Published on line in Int. J. Adv. Manuf. Technol. Volume 43, Numbers 1-2 / July, 2009, pp.52-60.

DOI: 10.1007/s00170-008-1680-5

[11] M.A. Farsi, B. Arezoo, Feature Recognition and Design Advisory System for Sheet Metal Components, Proceeding of the 5th IATS, May 2009, Turkey.

[12] Joost R. Duflou et al. Methods for the sequencing of sheet metal bending operations, Int. jour. prod. res., vol. 37, no. 14, 1999, pp.3185-3202.

[13] J.C. Lin, C. C. Tai. The Application of Neural Networks in the Prediction of Spring-back in an L-Shaped Bend. International journal of Advanced Manufacturing Technology, vol. 15, 1999, p.163–170.

DOI: 10.1007/s001700050053

[14] M.A. Farsi, B. Arezo, The Determination of spring-back in L bending operation Using Neural Networks", Proceeding of the 5th IATS, May 2009, Turkey.

[15] Suchy, Hand Book of Die Design, SPRINGER, 2003, New York.

[16] M. A. Farsi, B. Arezoo, Experimental study of high-strength low-alloy sheet metal components with holes on the bending surfaces, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, vol. 223, Number4, 2009, pp.387-394.

DOI: 10.1243/09544054jem1292