连续碳纤维3D打印的压力轨迹实时跟踪算法研究

Real-time Tracking Algorithm of Pressure Trajectory for the Continuous Carbon Fiber 3D Printing

针对碳纤维复合材料3D打印过程中各层之间无法紧密粘连及连续成型路径方向随形改变的问题,提出了基于滚轮压力装置的成型路径轨迹实时跟踪算法。通过三维模型切片轮廓轨迹的自动识别与离散化处理,实现滚轮在直线、曲线及连续方向变化等路径条件下的实时轨迹跟踪。仿真结果验证了压力轨迹实时跟踪算法的正确性和可行性,打印结果显示施压后测试件的拉伸强度和弯曲强度增加了138.11%和236.50%,打印件的力学性能显著提升。

Aiming at the problem that adjacent layers of continuous carbon fiber composite materials can not closely adhere and continuous molding path direction changes with shape during 3 D printing,a real-time trajectory tracking algorithm for forming path based on roller pressure device is proposed.Through the automatic recognition and discrete processing of the 3 D model slice contour trajectory,the accurate real-time tracking trajectory of the roller under the path conditions such as straight line,curve and the continuous direction change is realized.The simulation results show that the correctness and feasibility of real-time tracking algorithm of pressure trajectory are verified.The printing results show that the tensile strength and bending strength of the tested parts increase by 138.11%and 236.50%after applying pressure,and the mechanical properties of the printed parts are improved significantly.