Determining Setup Orientations From the Visibility of Slice Geometry for Rapid Computer Numerically Controlled MachiningJournal of Manufacturing Science and Engineering, Transactions of the ASME
Publication VersionPublished Version
AbstractA method for rapid computer numerically controlled (CNC) machining is being developed in an effort to automatically create functional prototypes and parts in a wide array of materials. The method uses a plurality of simple two-and-a-half-dimensional (21/2-D) toolpaths from various orientations about an axis of rotation in order to machine the entire surface of a part without refixturing. It is our goal to automatically create these toolpaths for machining and eliminate the complex planning traditionally associated with CNC machining. In this paper, we consider a problem that arises in automating this process - visibility to the surface of a model that is rotated about a fourth axis. Our approach involves slicing the computer-aided design (CAD) model orthogonal to the axis of rotation. The slice geometry is used to calculate two-dimensional visibility maps for the set of polygons on each slice plane. The visibility data provides critical information for determining the minimum number and orientation of 21/2-D toolpaths required to machine the entire surface of a part.
Citation InformationMatthew C. Frank, Richard A. Wysk and Sanjay B. Joshi. "Determining Setup Orientations From the Visibility of Slice Geometry for Rapid Computer Numerically Controlled Machining" Journal of Manufacturing Science and Engineering, Transactions of the ASME Vol. 128 Iss. 1 (2006) p. 228 - 238
Available at: http://works.bepress.com/matthew_frank/1/