DLP光固化3D打印机速度控制系统优化

DLP light curing 3D printer speed control system optimization

当前系统存在光照利用率不高、均匀性较差和成型效果不佳的问题,设计了基于DLP的光固化3D打印机速度优化控制系统。该系统利用激光光束将三维模型分层截面图形投影在液态的原材料表面上,进行逐点扫描,使得被扫描液态原材料发生光聚合反应而达到一定程度的固化,形成实物产品制件的一个薄膜,在实物产品制件首层光固化完成后,3D打印机操作台向下移动一个层厚的距离,在之前光固化完成的液态原材料表面再附上一层新的原料,直到获得实物产品,另外通过合适的波长,均匀三维模型投影幅面光照,实现了3D打印机速度优化控制。测试结果显示,系统有效提高了光照利用率和光照均匀性,节约了成型时间,改善了成型效果。

The current system has the problems of low light utilization rate, poor uniformity and poor molding effect, and a speed optimization control system based on DLP for photocurable 3D printer is designed. The system uses laser beam to project the three-dimensional model layered cross-section pattern on the surface of liquid raw materials, and then scans point by point, which makes the scanned liquid raw materials cured to a certain extent by photopoly merization reaction, and forms a film of the physical product. After the first layer of the physical product is cured , the three-dimensional image is struck. The printer operating table moves down a layer of thickness, attaches a layer of new material to the surface of the liquid raw material which has been cured before, and then obtains the physical prod uct. In addition , the speed of the 3D printer is optimized by uniform projection of the 3D model with appropriate wave length. The test results show that the system can effectively improve the light utilization and uniformity, save the mold ing time and improve the molding effect.