Title

溶劑型漿料法光硬化積層製造系統之迴轉式鋪料改良

Translated Titles

The improvement of revolving paving to solvent-based slurry stereolithography additive manufacturing system

DOI

10.6841/NTUT.2014.00005

Authors

羅均宇

Key Words

積層製造 ; 溶劑型漿料 ; 陶瓷粉末 ; additive manufacturing ; slurry ; ceramic

PublicationName

臺北科技大學製造科技研究所學位論文

Volume or Term/Year and Month of Publication

2014年

Academic Degree Category

碩士

Advisor

汪家昌

Content Language

繁體中文

Chinese Abstract

本文主要在於改良溶劑型漿料法光硬化成型(solvent-based slurry stereolithography,3S)技術之缺點,之前研究中戴[21]所架設的機台尚未完全製作出陶瓷工件,雖然迴轉式鋪層積層製造機系統在鋪層過程皆在成型區內,漿料隨著刮刀持續被帶動著,避免回程時的刮料也減少鋪層時間,也不會在加工平台造成積料問題,但因為是半封閉式的鋪層機構,無法進行即時的人工清潔動作。原先投影機是利用近攝鏡縮短投影距離,卻也使亮度過於集中且影像變形,光照擴散性黏合現象發生,造成工件成型的輪廓一併硬化、破壞並造成影像和成品差距甚大。成型板在成型過程中會與加工平台互相黏合,造成Z軸下降層厚問題,而無法抓住工件,使得成品受損及厚度不正確。 本研究主要目的是對上述原先機台所遇到的問題加以改良並製作出10mm厚度以上之高精密的陶瓷工件。在鋪層系統上,以新的扇形區域作為成型區域,讓漿料能夠隨著流動方向鋪層,讓漿料能夠完全的利用;在石膏板的側邊與表面設計溝槽,除了進行排料並避免與成型板互相黏合而無法抓住工件使Z軸下降層厚不正確;在投影機上,對鏡頭進行改裝取代近攝鏡,不僅縮短投影距離,也避免光源過於強烈和集中而造成的擴散性黏合。最後再利用本研究室開發之影像變形校正及能量均勻化技術,使投影的效果趨近完美。

English Abstract

This research is focusing on the improvement of the slurry coating performance of the Solvent-based Slurry Stereolithography (3S) system. The previous generation of the 3S machine with revolving paving system cannot produce ceramic parts perfectly. The main failure reasons include four problems. Firstly, the semi-enclosed structure design made the cleaning-area deflation. Secondly, the platform will be deformed under paving process by remained slurry on the scraper. Thirdly, the close-up lens with the mask projector shorten the projection distance and increase the resolution, but come together with image distortion and non-uniform energy distribution. And fourthly, Green parts on Platform are peeling off by Z-axis moving. The main purpose of this research is to building a new 3S system with revolving paving scraper. Anti-adhesion sector-section platform successfully carry the slurry flow over the exposure area and moving with correctly thickness. By the lens extension adjusting on the projector to bring a better image contrast under a better resolution. Moreover, the software of Image Distortion Calibration & Uniform Energy Distribution algorithm have developed and applied. The high-precision ceramic parts with 10mm thickness has been successful produce by the proposed system with the above improvement technologies.

Topic Category 機電學院 > 製造科技研究所
工程學 > 機械工程
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