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Determining setup orientations from the visibility of slice geometry for rapid computer numerically controlled machining
- Source :
- Journal of Manufacturing Science and Engineering. Feb, 2006, Vol. 128 Issue 1, p228, 11 p.
- Publication Year :
- 2006
-
Abstract
- A 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 (2 1/2-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 2 1/2-D toolpaths required to machine the entire surface of a part. [DOI: 10.1115/1.2039100] Keywords: visibility, rapid prototyping, machining, slice geometry
Details
- Language :
- English
- ISSN :
- 10871357
- Volume :
- 128
- Issue :
- 1
- Database :
- Gale General OneFile
- Journal :
- Journal of Manufacturing Science and Engineering
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.143341094