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IMPROVING THE SIMULATION EFFICIENCY IN FIVE-AXIS MILLING BY USING AN ADVANCED OCTREE AND AN IMPLICIT FORMULA OF A GENERALIZED CUTTER
Author(s): 
Pages: 735-756
Year: Issue:  5
Journal: Journal of Systems Science and Complexity

Keyword:  Five-axis milling simulationframeimplicitoctreeSTL.;
Abstract: This paper presents an advanced octree(AO-rep) model and an implicit formula of a generalized cutter model for five-axis milling simulation.First,the main ideal of the AO-rep model is building a hierarchical structure and representing solid volumes.The AO-rep model utilizes an octree to cull unrelated voxels,and generates a small-scale voxel model in grey octants when a cutter intersects these octants.Using a simplified intersection computation between a cube and triangles in E~3,an STL model can be converted into its AO-rep model at a preprocessing stage.Second,the authors formulate an implicit function of a generalized cutter in moving cutter frame,and determine the function in fixed workpiece frame using the theory of a rigid body motion.Finally,the authors make a simulation of machining an impeller.The result shows that the proposed approach has a high performance of time and space.
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