期刊
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
卷 50, 期 5-8, 页码 677-687出版社
SPRINGER LONDON LTD
DOI: 10.1007/s00170-010-2530-9
关键词
Quadtree-array; Geometric modeling; Simulation efficiency; Three-axis milling; Machining process simulation
资金
- 111 Project, China [B07018]
A workpiece hybrid representation method based on quadtree-array is presented to improve the geometric simulation efficiency on three-axis milling process. The method takes the advantages both of Z-Map and quadtree in simulation model representation. The discrete points managed by using Z-Map algorithm is to represent the whole model, while the points used to represent the simulated surface detail are managed with quadtree-array. The method can reduce the levels of a quadtree without losing simulation accuracy. A dynamic optimization algorithm to the quadtree structure is highlighted to reduce its total nodes in simulation process. As a result, the simulation efficiency can be improved significantly. A three-axis milling process simulation system based on quadtree-array representation was developed and used to evaluate the performance of the presented method. The evaluated results show that quadtree-array-based hybrid representation method of workpiece can improve the simulation efficiency significantly, and reasonable division number of array cells is also recommended.
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