数控仿真中切削面计算的并行化研究

Numerical Simulation of Cutting Face Parallelization of Computing Research

针对高离散精度模型与刀具包围体进行切削计算的情况,由于三维图像重建的计算量大,基于传统CPU实现的数控加工仿真系统不能满足实时性的三维绘制。本文利用GPU的并行性特点,提出并行方式数控仿真切削面显示算法:通过线程并行处理基于MC算法的实体构造模型中体素与刀具包围体的切削计算,根据切削后体素角点信息和边的状态查找建立的构型索引表和交点数目索引表,加速数控仿真切削面的提取,从而提高三维图像的绘制速度,满足实时性显示要求。

For the calculation of high precision of discrete model and the cutting tool volume, because of the great amount of 3d image reconstruction calculation, nc machining simulation system which is based on the tradi- tional CPU implementation can＇t satisfy the real-time 3d rendering. Based on characteristics of parallelism of GPU, parallel numerical control cutting face simulation show algorithm was proposed： parallel process model body element based on MC algorithm and tool cutting volume by the entity structure of thread, and then look up configuration index table and node number index table according to voxel corner and edge information, so as to accelerate the nc simulation of cutting face extraction and improve the rendering speed of three-dimensional ima- ges, and satisfy the requirement of real-time disolav.