Abstract
Milling simulations are used prior to actual machining to detect potential problems of a tool path, for example excess milling of a workpiece. A simulation method based on the dexel representation of the workpiece is widely used. In this method, a milling process is geometrically evaluated by subtracting successive tool swept volumes along the path from a collection of thin vertical dexel cubes representing the workpiece shape. Two technologies for accelerating the dexel based milling simulation are proposed. (1) Most computation time in the simulation is elapsed in detecting such dexels intersecting the tool swept volumes. Based on some geometric characteristics of the tool path for milling the metal product, we define a tight bounding box to each surface element of the volumes which efficiently limits the range of potential intersecting dexels. (2) A critical milling process must be checked repeatedly from various viewing directions. The simulation method is further improved by integrating a history mechanism which records the computation results obtained in the first simulation process. By using the record, the computation time of repeated simulations can be substantially reduced.
The original version of this chapter was revised: The copyright line was incorrect. This has been corrected. The Erratum to this chapter is available at DOI: 10.1007/978-0-387-35392-0_40
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© 1999 IFIP International Federation for Information Processing
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Inui, M., Kaneda, M., Kakio, R. (1999). Fast Simulation of Sculptured Surface Milling with 3-Axis NC Machine. In: Olling, G.J., Choi, B.K., Jerard, R.B. (eds) Machining Impossible Shapes. IFIP — The International Federation for Information Processing, vol 18. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35392-0_10
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DOI: https://doi.org/10.1007/978-0-387-35392-0_10
Publisher Name: Springer, Boston, MA
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