近年來積層製造因為三維印表機的關係，越來越被人所瞭解，被應用的領域也逐漸擴展。但相較於其他種類之製程方式，三維印表機成品的機械性質相對較弱。為了改善此問題，最為普遍被研究的方式是設計不同種類之網格結構或是從材料之強化來著手，相對較少人討論加工路徑方向對於機械性質之影響。
而為了使原本只有三維自由度的加工路徑有更多元的變化，將實驗室的五軸快速原型機之控制程式進行改善，使機台能順利地進行五軸同動的運作。實驗中使用的加工材料為聚乳酸，路徑方面主要規劃了三種試片來與根據縱橫向路徑所做之試片進行拉伸試驗的比較。在比較六種試片之實驗數據後，全縱向試片的抗拉強度如預期一般是六種試片中最高的，可以推斷擠出路徑方向與受力方向之間有明確之關係，但若在加工路徑中存在著垂直試片平面方向之直接變化等因素，也將會降低成品拉伸之機械性質。

In recent years, the additive manufacturing has been known by people because of 3D printers which are gradually used in many applications. However, the mechanical properties of the products made by 3D printers are usually weaker than those made by other manufacturing methods. To resolve this problem, many researchers tried to use various types of mesh structure or to use the materials with higher strengths. In this study, we adopted a different approach by considering various paths on the impact of mechanical properties made by the FDM-type 3D printer.
To generate various paths, in this study we improved the control program of a 5-axis FDM machine and made it operate smoothly. The material used in the study was PLA. Six different types of paths generated by this machine were used to make specimens for tensile tests.
From the test results, the specimens with only longitudinal paths had the largest tensile strength among all the specimens. It may be inferred that there is a relationship between the types of paths and the direction of the force applied to the specimen.

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