Real-time shaded NC milling display
SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Direct calculation of machining parameters from a solid model
Computers in Industry
Parallel processing for 2-1/2D machining simulation
Proceedings of the sixth ACM symposium on Solid modeling and applications
Methods for Detecting Errors in Numerically Controlled Machining of Sculptured Surfaces
IEEE Computer Graphics and Applications
Geometric Modeling for Swept Volume of Moving Solids
IEEE Computer Graphics and Applications
A virtual reality system for the determination of critical machining-process parameters
International Journal of Intelligent Engineering Informatics
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Continued progress in the area of solid modeller based machining process simulation is hindered by the complexity growth that occurs for a large number of tool-paths, n. For this reason, many researchers have adopted the Z-buffer approach. Boundary-representation (B-rep), however, remains the dominant choice for commercial computer aided design and manufacturing software. In this paper, it is shown that, under practical 2 1/2 D machining assumptions, the total number of tool-path neighbour pairs is O(n), and therefore the average ratio of simulated to subtracted tool-paths remains constant. Tool-path neighbours are grouped and simulated in parallel, greatly reducing wall clock running time. Running time is further reduced by filtering the intersection graph for edges and faces that are relevant to the cutter immersion. This information is subsequently used to discard irrelevant and time consuming intersection operations. Overall, a 90% decrease in wall clock running time was achieved.