微快速原型系統之霧化鋪層技術研究

Development of Micro Rapid Prototyping System by Spray Coating Technology

魏宏樺(Hong-Hua Wei)

指導教授 ： 汪家昌

國立臺北科技大學/機電學院/製造科技研究所/碩士(2005年)

摘要

本篇論文主旨在於研究微快速原型之技術發展，目的在於去除一般輻射能硬化液態原型系統建構時需要支撐的問題，支撐的產生對於懸空物件雖然可以確保在建構工件時不會因為液態材料的鋪層令工件漂移開定點或是刮板作動時隨著其動作而移動，但是支撐不但不易清除更會破壞工件的表面精度，而就目前產品微小化之趨勢看來，一旦產品尺寸邁入μm等級時，支撐的清除更不是以人力就可以進行的，而微快速原型系統的開發即必須補足製作μm尺寸之產品時不需要支撐而又可順利進行鋪層，因此有必要以全新的鋪層技術取代傳統的刮板式鋪層法。
本論文在研究的過程中，嘗試各類型的霧化技術，於其中尋找適用於本系統之霧化方式並解決上述之問題，而在經過氣壓與泵浦式之霧化技術及搭配上各種霧化噴頭的實驗後發現，利用噴霧控制組與自動式噴槍搭配上TN.60霧化噴頭對於樹脂材料之霧化效果最佳，因此於論文最後使用此組合來進行鋪層之工作以實際試驗的方式以確定霧化系統之可行性，雖然此微快速原型系統上有許多技術上的問題尚待突破，但希望未來可將此系統應用於各種微小3D工件之加工，以提高產品之附加價值。

關鍵字

微快速原型技術 ； 霧化 ； 動態光罩

並列摘要

Conventional coating technology used in RP system is normally based on sweeper which moves resin from one side to the other. The drawback of the recoating method is the force on the surface during the spread process. This unwanted force might destroy the work piece which has just been scanned by laser beam. In order to avoid the false caused by the sweeping force during part build, strong supporting structure is necessary to be added. The state of art of RP technology is to fabricate micro parts or parts with micro features and the supporting structure will become enormous to the micro features. On the other hand， it will face a difficulty to remove the supporting structure after part has been build. It is necessary to replace the recoating sweeper. The purpose of this paper is to investigate spray coating technology for micro rapid prototyping (RP) system. By applying spray coating technology, there is no sweeping force. The supporting structure will then be limited.
Many spraying technologies have been introduced and tested in this research. Moreover, many methods trying to decrease the viscosity of the resin have been studied. The results shown that adding solvent to the resin will decrease the viscosity rapidly and makes it possible to be sprayed by a single phase nozzle. This combination has shown a good result during micro RP fabrication.

並列關鍵字

Micro Rapid Prototyping ； Dynamic Mask ； Spray

參考文獻

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