本論文為對下照式光固化3D列印系統之大面積高速列印所進行的研究，研究目的為在大面積列印下，找出超音波震盪子安裝位置、頻率及震幅對分離力的影響，並分析超音波震盪下不同面積所產生的分離力，探討超音波降低分離力的最佳化。
機台以13吋列印面積為設計主軸，控制與面板圖形顯示方面，以電腦搭配Arduino程式做Z軸傳輸及遮罩控制，並將超音波系統與軟體整合。此外並安裝應力應變規來量測超音波震盪所降低的樹脂回流力及真空吸附力。接著使用加速規量測其所產生的波動及場域，以此驗證不同頻率超音波所造成的影響。最後再以線寬曝光實驗測試超音波對物件加工精度的影響。
本研究最後發現在大面積下，超音波28K Hz對成型平台橫向震動，有最佳的列印速度表現，真空吸附力峰值只有一般列印的77%，樹脂回流力峰值則是一般列印的79.2%。在同樣的槽體下，列印面積越大時，超音波降低的分離力越多。超音波列印對精度的影響，在列印小於76µm的物件會導致變形。

This thesis is a research on the large-area high-speed printing of the bottom-illuminated 3D printing system. The purpose of the research is to find the installation position, driving frequency and amplitude of the ultrasonic oscillator against the separation force under large-area 3D printing. We analyzed the separation force produced by different size of pattern areas under ultrasonic vibration, and also discussed the optimization of ultrasonic wave to reduce the separation force.
The machine is focused on the design of a 13-inch printing area system. In terms of control and graphic display panel, a computer is used with Arduino programs for Z-axis signal transmission and mask control, and the ultrasonic system are also integrated within the software. Moreover, the strain gauges are installed to measure the resin reflow force and vacuum adsorption force reduced by the ultrasonic vibration. Then, in order to measure the fluctuation and field generated by the ultrasonic waves of different driving frequencies, an accelerometer is used. Finally, the linewidth exposure experiment is used to test the impact of ultrasonic effect to the workpiece accuracy.
This study finally found that under a large printing area, 28 kHz ultrasonic wave vibrates the forming platform laterally has the best printing speed performance. The peak value of vacuum adsorption force and resin reflow force is only 77% and 79.2% of normal 3D printing process, respectively. Under the same tank, the larger the printing area, the more ratio of the separation force could be reduced by the ultrasonic-assisted 3D printing system. The impact of ultrasonic-assisted 3D printing on the accuracy is the deformation when printing objects smaller than 76 μm.

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