Abstract:

To improve the speed and accuracy of virtual machining simulation, a new algorithm of dynamic partial rendering for voxel modelbased virtual machining simulation is proposed. It uses voxel adjacency relationship between nodes to achieve dynamic partial rendering. In initialization stage, both octree structure voxel model for virtual rough and adjacency traversal algorithm of any voxel are modeled. In stage of virtual machine simulation, the collision detection is conducted from voxels that collided with virtual tool in last frame, and spreads to their adjacent voxels calculated using adjacency traversal algorithm. If some tested voxel is collided with virtual tool, its parameter will be modified dynamically. So dynamic partial rendering in virtual machine simulation is realized. Finally, a simple fiveaxis milling virtual machining experiments is setted, which shows that the presented algorithm is feasible and effective.

Key words: virtual machining, voxel model, adjacency, dynamic partial rendering 