Generating alternative process plans for complex parts

Abstract Balancing the load in workshops of versatile machines can be significantly improved if parts are processed through alternative routings. The paper presents an automated process planning method that departing from the geometric part model and the description of machining resources generates a portfolio of executable process plans with the objective to maximize the throughput of a workshop. Parts may have rotational, planar and freeform surfaces. A new model is suggested for the macro planning phase where a combination of geometric reasoning and constrained combinatorial optimization generates alternative setups, resource assignments and operation sequences. The method is demonstrated in industrial setting.

[1]  J. Hatvany,et al.  The Efficient Use of Deficient Knowledge , 1983 .

[2]  Berend Denkena,et al.  Knowledge Management in Process Planning , 2007 .

[3]  Tullio Tolio,et al.  SPECIES—Co-evolution of products, processes and production systems , 2010 .

[4]  Xun Xu,et al.  Computer-aided process planning – A critical review of recent developments and future trends , 2011, Int. J. Comput. Integr. Manuf..

[5]  Paul K. Wright,et al.  Volumetric feature recognition for machining components with freeform surfaces , 2004, Comput. Aided Des..

[6]  Kristina Shea,et al.  Design-to-fabrication automation for the cognitive machine shop , 2010, Adv. Eng. Informatics.

[7]  Gideon Halevi,et al.  Principles of Process Planning: A logical approach , 2012 .

[8]  Kanji Ueda,et al.  An Emergent Synthesis Approach to Simultaneous Process Planning and Scheduling , 2007 .

[9]  Youichi Nonaka,et al.  Scheduling with alternative routings in CNC workshops , 2012 .

[10]  Peihua Gu,et al.  Recent development in CNC machining of freeform surfaces: A state-of-the-art review , 2010, Comput. Aided Des..

[11]  J. Hatvany,et al.  World survey of CAM , 1983 .

[12]  ’ Y.Woo,et al.  A Hybrid Feature Recognizer for Machining Process Planning Systems , 2015 .

[13]  A. Márkus,et al.  Process planning with conditional and conflicting advice , 2001 .

[14]  József Váncza,et al.  Genetic algorithms in process planning , 1991 .

[15]  Hoda A. ElMaraghy,et al.  Evolution and Future Perspectives of CAPP , 1993 .

[16]  Sri Hinduja,et al.  Extendible Operation Sequencing for Turn-Milled Components , 2007 .

[17]  Lihui Wang,et al.  Embedding a process plan in function blocks for adaptive machining , 2010 .

[18]  J. Hatvany,et al.  Results of a World Survey of Computer-Aided Manufacture , 1981 .

[19]  Satyandra K. Gupta,et al.  Recent Advances and Future Challenges in Automated Manufacturing Planning , 2011, J. Comput. Inf. Sci. Eng..

[20]  Ahmed Azab,et al.  Mathematical Modeling for Reconfigurable Process Planning , 2007 .

[21]  Gideon Halevi,et al.  Principles of process planning , 1994 .