研究生: |
李恆昇 Heng-Sheng Lee |
---|---|
論文名稱: |
多材質氣壓擠出積層製造系統之光固化樹脂加工資料庫建立 Study of Vat Photopolymer Printing Parameters Database for Multi-Material Pneumatic Extrusion Based Additive Manufacturing System |
指導教授: |
蔡明忠
Ming-Jong Tsai |
口試委員: |
江卓培
Cho-Pei Jiang 鄭逸琳 Yih-Lin Cheng 郭永麟 Yong-Lin Kuo 蔡明忠 Ming-Jong Tsai |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 自動化及控制研究所 Graduate Institute of Automation and Control |
論文出版年: | 2020 |
畢業學年度: | 108 |
語文別: | 中文 |
論文頁數: | 85 |
中文關鍵詞: | 積層製造 、後處理 、氣壓擠出技術 、光固化 、列印加工資料庫 |
外文關鍵詞: | Additive manufacturing, Post processing, Pneumatic extrusion, Vat photopolymerization, Printing database |
相關次數: | 點閱:302 下載:0 |
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本研究利用多材質氣壓擠出積層製造系統來建立光固化樹脂加工資料庫,硬體部分以三軸龍門式機構和CNC控制器為基底,加上多噴頭氣壓擠出模組作氣壓擠出外加DA控制器和電控比例閥來彈性控制氣壓,周邊I/O為正負壓與固化UV光源之控制。軟體部分則是結合商用切層軟體和改良過的後處理程式來處理大量的切層資料和插入加工程式,同時也提升了資料處理效能和切層資料後處理的正確率。
依據材料特性和選定針頭尺寸後,透過固定氣壓改變機台移動速度的方式,可以量測到該氣壓下可列印出線條的極限速度,蒐集在一固定氣壓固定速度下的線徑數據。在可用範圍內針對不同氣壓與列印速度進行列印及線徑量測,就可以建立線徑與氣壓和機台移動速度的關係圖。因此在不同列印速度下,調整氣壓即可得到一致的列印線徑,並且可以轉變為切層軟體和後處理程式的列印加工資料數據庫,本研究建立三種材料之等線徑加工參數。
本研究加入支撐結構的設計讓光固化樹脂的邊框可以維持,並且成功建立出三種列印的模式,可根據使用的材料種類的多寡(軟材、硬材、支撐材)來選取對應到的噴頭作列印,在切層軟體的設定中應用加工資料數據庫中的資料,針對欲列印的線徑選取對應的機台移動速度和氣壓,氣壓驅動之壓力可隨機台移動速度的改變作調整,最後也有利用這些參數列印一些樣品進行驗證。
In this study, a multi-material pneumatic extrusion based additive manufacturing system is used to found a vat photopolymer printing parameters database. The hardware part is based on three-axis gantry mechanism and CNC controller with equipped multi-nozzle modules. The peripheral I/Os include positive, negative pressure extrusion and light curing source. The software part combines commercial slicing software and advanced post processing code together which can handle a large amount of slicing data and also improve the efficiency.
Considering the characteristic of materials and selecting the dimension of nozzles, the limited velocity can be determined through the way of changing machine moving velocity in a constant air pressure. The printing parameter relation can also be obtained after the width data of the printed wire are measured from different pressure and printing speed, and it can be converted to the vat photopolymer printing parameters database. Therefore, a constant diameter can be obtained by regulating the pressure for different printing speed. The printing parameters of three materials are also constructed in this study.
The design of support material makes the vat photopolymer’s outer perimeter can be maintained, and there are three printing modes being successfully developed in this study that can use hard, soft and support material according to the quantity of nozzles. Meanwhile, the printing parameters can be utilized in slicing software and the pressure can be adjusted based on the machine velocity. Finally, there are some samples being printed for verification.
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