Fabrication of DLP light-curing 3D printer based on investment casting
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摘要: 文章将DLP光固化成型技术与熔模铸造工艺相结合，研制了适用于陶瓷浆料打印的光固化增材制造装备。以实现DLP光固化成型工艺参数：曝光时间、曝光层厚及曝光强度等为设计出发点，合理设计光固化打印机的选型及零部件布置，验证最佳工艺参数，确定了设备最佳曝光时间为30～35 s；最佳打印曝光层厚为0.1 mm。Abstract: By integrating DLP light-curing technology with the investment casting process, a synergistic approach harnessing the strengths of both methods becomes achievable. A specialized light-curing apparatus, tailored for ceramic paste printing, has been engineered. The development process prioritized the configuration of essential DLP light-curing parameters: exposure time, exposure layer thickness, and exposure intensity. This involved meticulous selection of suitable light-curing printers and the strategic arrangement of components. Extensive design considerations culminated in the validation of optimal process parameters. Consequently, the equipment's optimal exposure time has been definitively established at 30-35 s, while the most effective printing exposure layer thickness stands at 0.1 mmm.
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Key words:
- investment casting /
- DLP /
- light curing /
- equipment /
- process parameters
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表 1 曝光参数
参数 数值 参数 数值 底层曝光时间/s 40 打印个数/个 4 单层曝光时间/s 30 Z轴抬升距离/mm 60 底层层数/层 3 Z轴抬升速度/（mm/min） 350 
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表 2 Z轴方向尺寸
mm 不同曝光
层厚同一批次四个打印机尺寸 标准差 一 二 三 四 平均值 0.1 4.08 4.15 4.17 4.06 4.08 0.04 0.15 3.94 4.00 3.66 3.54 3.94 0.19 0.2 3.79 3.37 3.8 3.39 3.79 0.20 0.3 2.81 2.79 3.22 2.29 2.81 0.32
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表 3 水平方向尺寸
mm 不同曝光
层厚同一批次四个打印机尺寸 标准差 一 二 三 四 平均值 0.1 10.7 10.57 10.37 10.87 10.7 0.18 0.15 10.02 10.18 10.07 10.17 10.57 0.07 0.2 10.54 10.58 10.5 10.6 10.37 0.04 0.3 10.93 10.88 10.64 10.37 10.71 0.22
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