Determining Setup Orientations From The Visibility of Slice Geometry for Rapid Computer Numerically Controlled Machining  

Oleh:

Wysk, Richard A. ; Joshi, Sanjay B. ; Frank, Matthew C.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 128 no. 1 (Feb. 2006), page 228-238.
Topik: machining impact; determining; setup orientation; visibility; slice geometry; rapid computer numerically; machining

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.8 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

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 - 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 - D toolpaths required to machine the entire surface of a part.

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