基于压缩体素模型的环形刀空间扫描体构造新方法及其应用

A New Compressed Voxel-Based Method for Scanning Body Modeling of a Fillet-End Cutting Tool and Its Application

提出了一种基于压缩体素模型的环形刀空间扫描体构造新方法。将环形刀分解为相应圆环体和圆柱体两部分,通过一系列运算生成环形刀空间扫描体压缩体素模型;采用三个方向的Dexel模型表示体素模型而使得计算数据量得到了很大压缩,提高了布尔操作速度;通过Marching-Cubes方法提取数控加工仿真工件表面模型并进行图形显示,提高了显示质量和显示速度。仿真结果三维信息完备,数控编程人员可从任意方向观察、验证仿真结果。

Based on the compressed voxel model, a new method for scanning body modeling of a fillet-end cutting tool is presented. A fillet-end cutting tool is separated into two portions： a torus and a cylinder. After a series of operations, the compressed voxel model of the swept volume of the fillet-end cutting tool is constructed. The Dexel model in three directions is utilized to represent a voxel model whereby the calculated data can be greatly compressed and Boolean operation speed is improved. Marching cube algorithm is applied to extract the surface model of machined workpiece, and then was displayed with drawing patterns. The display quality of the machined workpiece and display speed are improved. The 3D information of the NC simulation results is complete. The programmers can observe and verify the NC machining simulation results from arbitrary directions in 3D space.