陶瓷雷射快速原型系統分析及材料處理系統改良

Analysis of Ceramic Laser Rapid Prototyping System and Improvement of Material Processing System

丁宏仁(Hung-Ren Ding)

指導教授 ： 湯華興 ； 嚴孝全

國立臺北科技大學/機電學院/製造科技研究所/碩士(2009年)

摘要

本研究目的在將本研究室研發之快速原型系統加以分類及建立圖檔管理、設計新式的漿料攪拌循環系統及鋪料機構來改良CLF之材料處理系統、得到均質的漿料勻化，並避免鋪生坯層時的波紋現象。最後，配合本實驗室所研發之漿料分配器，利用改善後的設備自動化製作出精確的3D工件。
本文將陶瓷快速原型機分為材料處理系統、雷射掃描系統及控制系統，本文的主要目的之一是要繪製設計圖來建構材料處理系統，建立設計上的詳細資料，以便做為日後在改良時的參考；在材料處理系統中的漿料供應系統，改變攪拌棒型式並對供料桶進行結構改造及建立漿料循環系統，且在不同位置進行固含量的分析研究，得知固含量差異均在0.1%以內，漿料充分達到循環且均勻化的效果，而在10小時的連續攪拌作動下，固含量由53.59%提升至54.57%，且具穩定性的變化，便於控制漿料品質。
建構一個改善的鋪層機構。改善鋪層結構、降低工作平台與鋪層機構距離，並加強導螺桿精度，希望解決生坯波紋現象，新式鋪料機構改良後得到的鋪層較原先平整，生坯波紋亦有改善；以改良後之鋪料機構進行自動化鋪層，漿料固含量為52.5%至55.8%的實驗中，得知固含量的改變與生坯密度值沒有明顯的關係。

關鍵字

快速成型 ； 鋪層 ； 固含量 ； 密度

並列摘要

The purposes of this research are to categorize rapid prototyping systems developed in this laboratory, to establish a drawing file management, and to improve material processing system of Ceramic Laser Fusion (CLF) by designing a new slurry mixing circulatory system and a paving mechanism, to obtain homogeneous slurry, and to avoid corrugation during the green layer paving. Finally, with a slurry distributor developed in this laboratory previously, the precise 3D objects can be fabricated automatically by the improved system.
The CLF system can be divided into a material processing system, a laser scanning system and a control system. One of the aims of this paper is to making design drawings to construct the material processing system and establish the designing details for the modifications of designing in the future. In the slurry supplying mechanism of the material processing system, a new type of stir was used and a modified slurry reservoir with circulatory system was constructed. Solid content at different positions of slurry reservoir was studied; the variation of solid content is no greater than 0.1%. Therefore, the slurry was fully dispersed by the circulation. After stirring for 10 hours, solid content was increased from 53.59% to 54.57%.
A modified paving system was constructed. Modifying the paving mechanism, reducing the distance between the working platform and the paving mechanism, and enhancing the precision of the ball screw were executed to get rid of the corrugation. The layer fabricated by the modified the paving mechanism was smoother and the corrugation was improved. However, the corrugation was induced from a less rigidity of the cantilever construction of the working platform. Althought the solid content of the layer fabricated by the improved paving mechanism was increased from 52.5% to 55.8%, the testing average density has no obviously variation.

並列關鍵字

Rapid Prototyping ； layer paving ； Solid Content ； density

參考文獻

[2] 周景澔，利用漿料法快速原型技術製作陶殼模，碩士論文，國立臺北科技大學製造科技研究所，台北，2008。

[3] 黃柏豪，快速原型機新式鋪層系統與陶瓷雷射膠化法製程設備之研發，碩士論文，國立臺北科技大學製造科技研究所，台北，2008。

[13] 彭冠偉，塑膠漿料快速原型系統之開發，碩士論文，國立臺北科技大學機電整合研究所，台北，2008。

[16] 劉川豪，陶殼模快速原型系統自動化，碩士論文，國立台北科技大學 機電整合研究所，台北，2005。

[19] 郭朝輝，陶殼模快速原型機鋪層系統之改善，碩士論文，國立臺北科技大學機電科技研究所，台北，2008。