Abstract
CNC press-brake forming is widely used to transform sheet-metal blanks into complex three-dimensional shapes in a low quantity high variety manufacturing environment. Sheet-metal bend sequence planning is a complex combinatorial problem. Process planning and tolerance reasoning for sheet-metal forming are critical to reduce manufacturing time and to address accuracy aspects. Handling time and accuracy of sheet-metal-formed components strongly depend upon the bending sequence. Process and material variations shrink the tolerance zones and therefore their effect must be incorporated in the overall sheet-metal process planning activity. Monte Carlo simulations are used in this article to evaluate the effect of process and material variations on bending accuracy. Branch-and-bound, traveling salesman problem (TSP)-based techniques are used to identify potential feasible bending sequences. Results from the Monte Carlo simulations are used as input for sheet-metal bend sequence planning. In the case study, proposed methodology is used for available industrial sheet-metal components. Resulted tolerance zones attenuated after the probabilistic deflection analysis. Expected error input from probabilistic deflection analysis produced bending sequences which resulted in formed components within designed accuracy limits. Possibility of forming out of tolerance components is also attenuated.
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Mehrabi MG, Ulsoy AG, Koren Y, Heytler P (2002) Trends and perspectives in flexible and reconfigurable manufacturing systems. J Intell Manuf 13:134–146
ElMaraghy HA (2006) Flexible and reconfigurable manufacturing systems paradigms. Int J Flex Manuf Syst 17:261–276
Taylan A (2012) Sheetmetal forming: fundamentals. ASM international. ISBN-13:978-1-61503-842-8
Taylan A (2012) Sheet-metal forming: processes and applications. ASM International. ISBN-13:978-1-61503-844-2
Duflou JR, Van Oudheusden D, Kruth JP, Cattrysse D (1999) Methods for the sequencing of sheet-metal bending operations. Int J Prod Res 37(14):3185–3202. doi:10.1080/002075499190239
Duflou JR, Vancza J, Aerens R (2005) Computer aided process planning for sheet-metal bending. Comput Ind 56:747–771
De Vin LJ, De Vries J, Streppel T (2000) Process planning for small batch manufacturing of sheet-metal parts. Int J Prod Res 38(17):4273–4283
Faraz Z, Waheed SH, Baqai AA, Tarat W, Ali L (2014) Reconfigurable fixture locating layout for compliant sheet-metal welded assemblies subjected to welding force variations. Proc IMechE B J Eng Manuf 228:740
Rui W, Thimm GL, Yongsheng (2010) Review: Geometric and dimensional tolerance modeling for sheet-metal forming and integration with CAPP. Int J Adv Manuf Technol 51:871–889
Vin LJ (2001) Expecting the unexpected, a must for accurate brakeforming. J Mater Process Technol 117:244–248
Ong SK, Vin LJ, Nee AYS, Kals HJJ (1997) Fuzzy set theory applied to bend sequencing for sheet-metal bending. J Mater Process Technol 69:29–36
Vin LJ (2000) Curvature prediction in air bending of metal sheet. J Mater Process Technol 100:257–261
Vin LJ, Streppel AH, Kals HJJ (1996) The accuracy aspect in set-up determination for sheet bending. Int J Adv Manuf Technol 11:179–185
Kannan TR, Shunmugam MS (2009) Processing of 3D sheet-metal components in STEP-AP-203 format. Part-I: feature recognition system. Int J Prod Res 47(4):941–964. doi:10.1080/00207540701510055
Kannan TR, Shunmugam MS (2009) Processing of 3D sheet-metal components in STEP-AP-203-format. Part-II: feature reasoning system. Int J Prod Res 47(5):1287–1308. doi:10.1080/00207540701510063
Vin LJ, Vries D, Streppel AH et al (1994) The generation of bending sequences in a CAPP system for sheet-metal components. J Mater Process Technol 41:331–339
Kontolatis N, Vosniakos GC (2012) Optimisation of press-brake bending operations in 3D space. J Intell Manuf 23(3):457–469
Vin LJ, Streppel AH (1998) Tolerance reasoning and set-up planning for brakeforming. Int J Adv Manuf Technol 14:336–342
Fu Z, Mo J, Zhang W (2009) Study on multiple-step incremental air-bending forming of sheet metal with spring back model and FEM. Int J Adv Manuf Technol 45:448–458
Streppel AH, Lutters D, Kals HJJ (2001) Process modelling for air bending: validation by experiments and simulation. J Mater Process Technol 115:76–82
Kurtaran H (2008) A novel approach for the prediction of bend allowance in air bending and comparison with other methods. Int J Adv Manuf Technol 37:486–495
Leu D-K. Positional deviation and spring back in V-die bending process with asymmetric dies. Int J Adv Manuf Technol. doi 10.1007/s00170-014-6532-x
Leu D-K (2013) Positional deviation in V-die bending process with asymmetric bend length. Int J Adv Manuf Technol 64:93–103
Xia M, Yan Q, Xie J (2011) An investigation on multistage bending of blank sheet into cylindrical tube by experiment and numerical simulation. Int J Adv Manuf Technol 53:145–155
Alan C, Chen C-F (2014) Sequence planning and tool selection for bending processes of 2.5D sheet metals. Advances in mechanical engineering. Hindaw publishing corporation. Article ID 204930
Gupta SK (1999) Sheet metal bending operation planning: using virtual node generation to improve search efficiency. J Manuf Syst 18(2)
Markus A, Vancza J (2002) Constraint-based process planning in sheet metal bending. CIRP Ann Manuf Technol 51(1):425–428
Jagirdar R, Batra JL (2001) Characterization and identification of forming features for 3-D sheet metal components. Int J Mach Tools Manuf 41:1295–1322
Aomura S, Koguchi A (2002) Optimized bending sequences of sheet metal bending by robot. Robot Comput Integr Manuf 18:29–39
Ciurana J, Ferrer I (2006) Activity model and computer aided systems for defining sheet metal process planning. J Mater Process Technol 173:213–222
Seo Y-H, Park J-w, Kim J (2014) Flexible Die design and spring back compensation based on modified displacement adjustment method. Adv Mech Eng 2014:131253
Bahloul R, Potiron A (2010) Comparison between three optimization methods for the minimization of maximum bending load and spring back in wiping die bending obtained by an experimental approach. Int J Adv Manuf Technol 48:1185–1203
Duflou JR, Cattrysse D (2005) Automated tool selection for computer-aided process planning in sheet metal bending. CIRP Ann Manuf Technol 54(1):451–454
Kim JH, Kim C, Chang YJ (2006) Development of a process sequence determination technique by fuzzy set theory for an electric product with piercing and bending operation. Int J Adv Manuf Technol 31:450–464
Kannan TR, Shunmugam MS. Planner for sheet metal components to obtain optimal bend sequence using a genetic algorithm. Int J Comput Integr Manuf 21(7):790–802. doi 10.1080/09511920701678833
Duflou J, Kruth JP, Van Oudheusden D (1999) Algorithms for the design verification and automatic process planning for bent sheet metal parts. CIRP Ann Manuf Technol 48(1):405–408
Farsi MA, Arezoo B (2009) Development of a new method to determine bending sequence in progressive dies. Int J Adv Manuf Technol 43:52–60
Streppel AH, Vin LJ, Brinkman J, Kals HJJ (1993) Suitability of sheet bending modeling techniques in CAPP applications. J Mater Process Technol 36:339–356
DIN 1541 (1975) Kaltgewaltzes. Breitband und Blech aus unlegierten Stahlen, Masse, zulaissige Massund Formabweichungen
DIN 1623 (1972) Kaltgewaltzes Band und Blech aus weichen unlegierten Stahlen, Gutevorschriften
Little JDC, Murty KG, Sweeney DW, Karel C (1963) An algorithm for the traveling salesman problem. Oper Res 11:972–989
Bluman AG (2003) Elementary statistics: step by step approach, 3rd edn. McGraw-Hill, NewYork, pp 300–420
Sobol IM (1995) Primer for the Monte Carlo method, 4th edn. CRC.Press, BocaRaton
ISO10303-1 (1994) Industrial automation systems and integration. Product data representation and exchange—Part 1: overview and fundamental principles. International Organization for Standardization, Geneva
International Standards Organization, ISO 146490–1 (2003) Industrial automation systems and integration—physical device control—data model for computerized numerical controllers. Part 1: overview and fundamental principles. ISO Geneva
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Faraz, Z., ul Haq, S.W., Ali, L. et al. Sheet-metal bend sequence planning subjected to process and material variations. Int J Adv Manuf Technol 88, 815–826 (2017). https://doi.org/10.1007/s00170-016-8823-x
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DOI: https://doi.org/10.1007/s00170-016-8823-x