用于梯度分布材料 3D 打印实验设备的开发

传统工艺制作梯度材料十分困难, 为此, 设计开发了用于梯度分布材料的 3D 打印工艺与实验设备,包括梯度建模、 控制系统及打印机械装置。 基于图像灰度变化, 建立了材料成分梯度的建模方法。 基于运动控制器设计了包括 X、Y、Z 三维空间位置轴和 U、V、W 3 种材料挤出轴的 6 轴联动系统, 具有运动轨迹规划及连续插补等功能。 开发了控制系统软件和硬件, 实现了材料比例输送与三维运动协调控制。 采用活塞挤出、 动态混合及直线三维平台设计, 构建了 3D 打印机械装置。 使用开发的实验设备, 采用不同颜色材料进行了梯度分布打印试验, 验证了开发实验设备打印梯度分布材料的可行性。

Development of 3D Printing Experimental Equipment for Gradient Distribution Materials

Gradient distribution exists widely in biological materials. Gradient materials can withstand large forces and thermal shocks and are widely used in high-temperature and high-pressure environments. It is very difficult to make gradient materials by traditional technology. 3D printing technology and experimental equipment for gradient distribution materials including gradient modeling, control systems and printing machinery are designed. Based on the image gray changes, a modeling method for material composition gradient is established. Based on the motion controller, a 6-axis linkage system including X,Y,Z three-dimensional spatial position axes and U,V, and W material extrusion axes is designed. It has functions such as motion trajectory planning and continuous interpolation. Software and hardware of the control system are developed to achieve coordinated control of material proportioning and three-dimensional motion. A 3D Printing mechanism is constructed using piston extrusion, dynamic mixing, and a linear 3D platform design. The developed experimental equipment is used to perform gradient distribution printing experiments using different color materials, and the feasibility of the developed experimental equipment to print gradient distribution materials is verified.