臺灣博碩士論文加值系統

運用融熔擠製沉積成型快速原型系統可以製作出低壓射蠟模具，然而所製作出的快速模具表面精度卻不佳，主要的原因為快速模具係運用層加工來製作，本研究提出一個具經濟效益之模具表面填補技術來改善表面粗糙度，以及提出一個高尺寸精度與低表面粗糙度之低壓射蠟模具快速製造技術。實驗結果發現，填補後低壓射蠟模具所製作之蠟型，中心線平均表面粗糙度Ra值可以從1710 µm改善至276 µm，表面粗糙度改善率可以達83.85 %。然而，快速原型件之Z軸誤差以及蠟型收縮誤差問題，可以藉由補償來提升尺寸的精度，運用此模具所製作的蠟型不但具有優良尺寸精度還具備優良表面精度，蠟型之平均尺寸精度誤差率可以從未補償1.76 %降低至0.66 %，蠟型表面之平均粗糙度改善率可達85.71 %，低壓射蠟20次之後，模具表面並未見填補材料脫落，蠟型表面也並未發現脫落之填補材料，經過拉伸試驗後得知金屬樹脂材料與快速原型件材料之間抗拉強度約為3.86 MPa，本研究所提出之精密低壓射蠟模具之尺寸修整補償涵蓋方法簡單、製程具備彈性、縮短模具開發時間、無複雜數學運算、降低設計尺寸錯誤、低製作成本，以及優良尺寸精度。

關鍵字: 融熔擠製沉積成型；低壓射蠟模具；尺寸精度；表面粗糙度；收縮

A low pressure wax injecting mold can be fabricated by use of fused deposition modeling rapid prototyping, whereas, the surface precision of the rapid mold fabricated is not preferred. In the study, a new technique is proposed for rapid manufacturing a low pressure wax injection mold with high surface finish and high dimensional accuracy. In the experiment results, it is found that after padding the wax pattern fabricated by low pressure wax injection mold, the center line average surface roughness Ra value can be improved from 1710 µm to 276 µm, so the surface roughness improvement rate can be reached to 83.85 %. However, the Z axis deviation and wax pattern shrinking deviation problems, can be improved with compensation to enhance size precision. Wax patterns produced from this mold have not only better dimensional accuracy but also better surface finish. The average relative error of dimension of wax patterns can be reduced from 1.76% to 0.66%. Surface roughness improvement rate of wax patterns of up to 85.71% can be achieved. And after 20 times of low pressure wax injecting conducted by low pressure wax injecting mold, there is no shed of padding materials found on the mold surface, through tension test, it is found that the tensile strength between metal resin materials and rapid prototype materials is about 3.86 MPa, the padding coverage method for size of precision low pressure wax injecting mold proposed by the study, is simple, flexible in process, time saving in mold developing, no complex mathematics calculation, design size deviation reduced, low fabrication cost, and preferred size precision.
Keywords：Fused Deposition Modeling；A Low Pressure Wax Injection Mold； Dimensional Accuracy；Surface Roughness；Shrinkage

明志科技大學碩士學位論文指導教授推薦書
明志科技大學碩士學位論文口試委員會審定書
明志科技大學學位論文授權書
誌謝
摘要
Abstract
目錄
表目錄
圖目錄
第一章 緒論
1.1 前言
1.2 研究動機與目的
1.3 論文架構
第二章 文獻回顧
2.1 FDM快速原型系統產業發展狀況背景介紹
2.1.1 FDM快速原型系統歷年來市場統計
2.1.2 各類廣泛快速原型製造評價
2.1.3 運用FDM快速原型之產業趨勢
2.2 FDM快速原型技術與發展
2.2.1 21世紀的快速原型技術相關議題
2.2.2 專為FDM快速原型而開發之五軸機器手臂
2.2.3 快速原型技術與快速模具整合製造系統
2.3 改善FDM快速原型件之表面粗糙度研究
2.3.1 藉由FDM快速原型的積層加工來改善表面粗糙度
2.3.2 探討快速原型技術之表面粗糙度改善
2.3.3 提升融熔擠製成型之原型件表面粗糙度研究
2.3.4 融熔擠製成型定量化學處理分析減少表面粗糙度
2.3.5 提出改變層疊的成型方向方式有效減少RPMR
2.3.6 預測層疊製造的表面粗糙度之量測
2.4 應用於FDM快速原型系統新型材料研究
2.4.1 融熔擠製成型技術研發新金屬及聚合材料的快速模具
2.4.2 應用短纖維強化材料於融熔擠製成型系統
2.5 FDM快速原型件成形尺寸精度影響之探討
2.6 高彈性FDM快速原型系統研發
2.7 運用FDM快速原型系統於支架製作研究
2.8 運用FDM快速原型系統於頭顱植入物研究
2.9 微型模具之研製技術研究
2.9.1 矽膠模具和聚氨酯樹脂之微型模具製作與蠟型分析
2.9.2 微型精密金屬模具之鑄造技術研究
2.10 FDM快速原型相關專利搜索說明
2.10.1 加熱擠出式快速原型機
2.10.2 具有旋轉主軸及噴墨列印功能的快速原型機
2.10.3 精密快速原型機之改良結構
2.10.4 快速原型機
2.10.5 具有細絲供應轉軸監測之快速原型系統
2.10.6 建構3D模型設備系統
2.11 FDM快速原型件去除支撐材料相關專利搜索說明
2.11.1 去除快速原型件支撐材料的方法和設備
2.11.2 清除材料清洗機
第三章 研究規劃與方法
3.1 實驗設備
3.2 量測設備
3.3 實驗材料
3.4 研究載具製作流程
第四章 低壓射蠟模具表面粗糙度改善填補技術
4.1 前言
4.2 實驗過程
4.3 結果與討論
4.4 結論
第五章 高尺寸精度與低表面粗糙度之低壓射蠟模具快速製造技術
5.1 前言
5.2 實驗過程
5.3 結果與討論
5.3.1 快速原型件製作後之尺寸變化研究
5.3.2 蠟型尺寸收縮率研究 111
5.3.3 快速原型件具有凹凸特徵製作後之尺寸變化研究
5.3.4 高尺寸精度與低表面粗糙度之低壓射蠟模具研究
5.4 結論
第六章 結論與未來展望
6.1 結論
6.2 未來展望
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