<論文>Boundary-Mapデータ構造に基づ<形状モデルの開発に関する研究

概要

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The purpose of this research is to develop a new geometric suitable for CAM functions. Geometric model used in a current CAD/CAM system has been developed to be suitable for representing 3D shapes precisely. When these geometric models are applied to CAM system, some problems occasionally arise in an accuracy, an execution speed for collision check, machining error due to a small deformation caused by cutting force and heat and so on. Therefore a new geometric model named "Boundary-Map geometric model" has been developed. This paper describes the data structure of Boundary-Map geometric model. The representing accuracy of shape and the required amount of memory are compared with those of Voxel data structure. It is confirmed that Boundary-Map data structure is much superior in representing accuracy to Voxel data structure. Moreover, by applying the reducing method to Boundary-Map data structure the required amount of memory reduces about 1/5. In the representation of the same shape the amount of memory required for Boundary-Map reduces from 1/20 to 1/40 of that for Voxel.
沼津工業高等専門学校の論文
2001-01-31