Feature-Based Machining using Macro

This paper presents an on-going research work on the implementation of feature-based machining via macro programming. Repetitive machining features such as holes, slots, pockets etc can readily be encapsulated in macros. Each macro consists of methods on how to machine the shape as defined by the feature. The macro programming technique comprises of a main program and subprograms. The main program allows user to select several subprograms that contain features and define their important parameters. With macros, complex machining routines can be implemented easily and no post processor is required. A case study on machining of a part that comprised of planar face, hole and pocket features using the macro programming technique was carried out. It is envisaged that the macro programming technique can be extended to other feature-based machining fields such as the newly developed STEP-NC domain.

Authors:

• M. Razak
• A. Jusoh
• A. Zakaria

Keywords:

• Feature-based machining
• CNC
• Macro
• STEP-NC.

References:

[1] Peter Smid, CNC Programming Handbook: A Comprehensive Guide to
Practical CNC Programming, Industrial Press, 2003.
[2] Bor-Tyng Sheen and Chun-Fong You, "Machining feature recognition
and tool-path generation for 3-axis CNC milling," Computer-Aided
Design, vol. 38, pp. 553-562, 2006.
[3] X.W. Xu and S.T. Newman, "Making CNC machine tools more open,
interoperable and intelligent-a review of the technologies," Computers in
Industry, vol. 57, pp.141-152, 2006.
[4] Muhammad Al-Hapis Abdul Razak and A. Zakaria, "Review on the
evolutions of CNC programming methods," 2nd Colloquium on
Manufacturing Technology, Kedah, 2010.
[5] Peter Smid, FANUC CNC Custom Macros Programming Resources for
Fanuc Custom Macro B Users, Industrial Press, 2005.
[6] Fanuc series 30i/300i/300is-Model A, User-s Manual, Common to Lathe
System/Machining Center System, Vol. 1-3.
[7] M. Al-Hapis A. Razak and A. Zakaria, "A framework for a feature based
machining using macro," Applied Mechanics and Materials, vols. 110-
116, pp. 1711-1715, 2012.
[8] ISO/FDIS 14649-11: 2002, Data Model for Computer Numerical
Controllers-Part 11: Process Data for Milling, ISO/TC 184/SC 1/WG7,
2002.
[9] ISO/FDIS 14649-10: 2002, Data Model for Computer Numerical
Controllers-Part 10: General Process Data, ISO/TC 184/SC1/WG7, 2002