工業4.0的概念於2011年德國漢諾威工業博覽會中首次被提出，強調未來的工業技術產業鏈將能透過智慧設備互相緊密結合，並且在工業4.0中機器人與積層製造技術(Additive Manufacturing，AM)將相輔相成，扮演著極為重要的角色。現今工業上機器人零組件仍以金屬塊材透過CNC加工切削而成，零件重量影響了機器手臂的負重自重比，工作效率因此受到限制。本研究將提出一機械手臂零組件之改良方法，透過結合複合材料質輕、高強度優勢以及積層製造技術低原料耗損、高製造自由度優勢，打造一俱備異形蜂巢結構(3D Honeycomb Lattice Frame Structure)之碳纖維複材三明治結構手臂零組件。
在複合材料中三明治結構為一極為普及之結構，由高剛性的板材(Face Sheet)及低密度的芯材(Core Material)所組成，此結構俱備高比強度和高比模量的性質。本研究針對傳統六角蜂巢結構(Honeycomb Structure)的受力異向性行為進行改良，透過選用高度對稱的阿基米德多面體單元作為最小堆積單元，並且使用骨架方式作為支撐進而減少結構重量。此外，本結構亦可以透過改變單元的幾何參數以及單元間排列方式因應複雜結構外型去進行局部的結構強化，使芯材結構俱備可調整的剛性。熱熔融沉積成型(Fused Deposition Modeling，FDM)技術為現今積層製造技術最為普及的一種技術，本研究應用FDM技術列印異形蜂巢結構與傳統蜂巢結構、桁架結構進行機械性質測試。
結果顯示傳統六角蜂巢結構的受力異向性約為5左右，亦即結構最弱面之受力能力僅為最強面之五分之一，兩結構平面受力能力差異極大。而本研究所設計之異形蜂巢結構的受力異向性落在1.5-2之間，證實透過改變單元形狀確實能改善此異向性行為。此外，本研究將密鋪堆積(Tessellation)運用在異形蜂巢的排列方式上，透過填入相同或相異多面體單元的方式使結構能形成三維空間上的填滿，壓縮測試結果也顯示相比於原先未強化的簡單立方堆積(Simple Cubic)，以密鋪堆積結構進行強化之試片其壓縮強度在各方向上皆能得到20-50 %的提升。最後，本研究透過FDM技術列印異形蜂巢結構填充之機械手臂零組件並成功將其與碳纖維複材結合，以複材三明治結構之手臂部件取代原先實心零組件。

In this study, a novel structure based on Archimedean solid and traditional honeycomb structure have been proposed and demonstrated by addictive manufacturing technique. Traditional hexagonal honeycomb reveals the highly stress anisotropy on mechanical behavior due to the geometric factor, which means the structure could be affect dramatically by the force direction. In other hand, 3D lattice honeycomb structure arises better ability in stress anisotropy from symmetrical geometry. Unlike the regular and uniform arrangement of hexagonal honeycomb structure, this cellular structure can provide extensive degrees of freedom by adjusting the relative density, shape, and stacking type of unit cell. At the meantime, truss-like structure reduces the amount of material while maintaining the high-strength and well impact resistance.

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