基于混合式八叉树模型的数控加工几何仿真

Geometry Simulation of NC Machining Based on Blending Octree Model

将混合式八叉树数据结构引入数控加工的几何仿真算法,并在简单的层次数据结构基础上加入了曲面的边界信息;叙述了从零件实体的CSG模型或B-Rep模型转换为相应的混合式八叉树数据结构过程中采用的方法,且在这一混合式八叉树模型的基础之上完成了仿真过程;最后通过一个零件数控加工几何仿真实例验证了所提出的算法的可行性和有效性。

The data structure of blending octree model is introduced into geometry simulation algorithm of NC machining in this paper, and the surface boundary information is added into this kind of simple hierarchical data structure. The method used in converting CSG model or B-rep model of part to corresponded blending octree data structure is described, and by means of blending octree model the geometry simulation process is implemented. Finally, the feasibility and validity of the is algorithm proposed in this paper is validated through geometry simulation of one part抯 NC machining.