Detecting re-design area for increasing manufacturability of drilling and three-axis pocketing operations

The intensive competition has forced the manufacturing industry to improve product quality and production efficiency, and meanwhile reduce production cost. Detecting potential manufacturability problems in early design stages would prevent unnecessary cost involved in re-work and/or re-design activities at later manufacturing stages. This paper presents an algorithm for determining re-design areas to feedback the designer when the design model involves machining holes and pockets using a three-axis computer numerical control machine. The algorithm takes into account the various sizes of tools and tool holders, and therefore allows a designer to test the manufacturability of their available cutters on their design models. A color-based obstacle-detecting method, based on layer-slicing of re-design areas, helps a designer to re-evaluate a design model for increasing manufacturability. Practical examples are provided as the output of the process.

[1]  Steven Skiena,et al.  The Algorithm Design Manual , 2020, Texts in Computer Science.

[2]  Ian Stroud,et al.  Solid Modelling and CAD Systems , 2011 .

[3]  Ye Li,et al.  Machinability analysis for 3-axis flat end milling , 2006 .

[4]  Hoda A. ElMaraghy,et al.  Design for Manufacturing of Sculptured Surfaces: A Computational Platform , 2009, J. Comput. Inf. Sci. Eng..

[5]  D. Marsh.  Applied Geometry for Computer Graphics and CAD , 1999 .

[6]  T. C. Woo,et al.  Computational Geometry on the Sphere With Application to Automated Machining , 1992 .

[7]  James Gao,et al.  A knowledge-based manufacturing and cost evaluation system for product design/re-design , 2007 .

[8]  Marin D. Guenov,et al.  A methodology for modelling manufacturing costs at conceptual design , 1998 .

[9]  Satyandra K. Gupta,et al.  Extracting alternative machining features: An algorithmic approach , 1995 .

[10]  Han Ding,et al.  Manufacturability Analysis for a Sculptured Surface Using Visibility Cone Computation , 1999 .

[11]  Geoffrey Boothroyd,et al.  Product design for manufacture and assembly , 1994, Comput. Aided Des..

[12]  Suk-Hwan Suh,et al.  Process planning for multi-axis NC machining of free surfaces , 1995 .

[13]  Tony C. Woo,et al.  Visibility maps and spherical algorithms , 1994, Comput. Aided Des..

[14]  Mikola Lysenko,et al.  Real-Time Machinability Analysis of Free Form Surfaces on the GPU , 2009, J. Comput. Inf. Sci. Eng..

[15]  Kazuhiro Saitou,et al.  Wavelet SDF-reps , 2009, DAC 2009.

[16]  Paul K. Wright,et al.  CyberCut: A World Wide Web based design-to-fabrication tool , 1996 .

[17]  Brittany Terese Fasy,et al.  Review of Geometric algebra for computer science by Leo Dorst, Daniel Fontijne, and Stephen Mann (Morgan Kaufmann Publishers, 2007) , 2008, SIGA.

[18]  Kristiaan Schreve,et al.  Manufacturing cost estimation during design of fabricated parts , 1999 .

[19]  Leo Dorst,et al.  Why geometric algebra , 2007 .

[20]  David G. Ullman,et al.  The Mechanical Design Process , 1992 .

[21]  Takashi Maekawa,et al.  An overview of offset curves and surfaces , 1999, Comput. Aided Des..