基于速度正交分解的3D打印扫描路径优化算法

Optimization of 3D Printing Scan Path Algorithm Based on Velocity Orthogonal Decomposition

为提高3D打印扫描填充的效率与零件成型质量,搭建基于SOPC的3D打印机驱动系统,提出基于速度正交分解的3D打印扫描路径优化算法。该系统能够支持各运动轴的同步驱动。该算法结合了运动的正交分解原理以及同步驱动方式的优势,将扫描路径中的空行程以及直线拐角替换为圆弧曲线,使各轴速度能均匀变化,打印头以最大可行速度按照规划的路径作匀速运动,扫描填充整个截面。实验结果表明:与原算法相比,新算法能有效减少扫描时间10%以上,尤其在打印扫描结构复杂且面积比较小的模型时扫描时间最高可减少55%以上。

In order to improve the efficiency of scanning and the quality of parts forming,a driving system based on SOPC system for 3 D printer was built and a 3 D printing scan path optimization algorithm based on velocity orthogonal decomposition was proposed.The system could support the synchronous drive of each axis.The algorithm combined the advantages of orthogonal decomposition principle and synchronous drive mode,the empty stroke and straight corner in the scanning path were replaced with the circular curve,so that the velocity of each axis could change evenly,and the print head moved at a uniform speed according to the planned path at the maximum feasible velocity to scan and fill the whole section.The experimental results show that compared with the original algorithm,by using the new algorithm,the scanning time reduces by more than 10%,especially when the model with complex scanning structure and relatively small area is printed,the scanning time can be reduced by more than 55%.