被動式剛性輔助滑塊之設計與研製

隨著消費性電子和工業技術的發展快速，迫使工具機(又稱工作母機)的性能與品質不斷的提升與改善。其中加工精度和產品品質，這些因素都受到切削顫振與組裝之空間誤差所影響。因此，永進機械(YCM)提供研究機台(FV-56A)改善切削顫振問題和提高機台精度。由於，工具機之系統零組件繁多，因此為了有效評估最優先改善標的，本論文使用層級分析法(Analytic Hierarchy Process, AHP)，層級分析法是透過賦予每的零組件一個權重。最後由矩陣運算，求得線性滑軌(THK-NRS30R)為本論文改善的重點。線性滑軌是透過滾動體在軌道面上移動，根據赫茲(Hertz)定理，假設滾動體為彈性體。所以當外力作用在滑軌上會造成空間誤差，也是線性滑軌剛性不足的原因之一。本論提供一種新穎的方式解決剛性不足的情況，是在線性滑軌之間加裝剛性輔助滑塊，它的設計概念是利用兩段式剛性曲線，並且結合樞紐的元素以提高物件的靈敏度，希望導入創新的研發過程提高重銑削時的剛性。在創意式發想設計的過程中，總共產生出9種不同的設計，並且由有限元素分析模擬零組件的特性。在目前的系統之下，加裝剛性輔助滑塊總體靜剛性提高了百分之三百，而動剛性的部分在增加剛性輔助滑塊之後，主要的三個模態很明顯有往後移動的趨勢。因此，在加工的角度來說就會減低加工時的振動。最後，本論文的創新設計申請新型專利中，專利名稱:改善線性滑軌之剛性與阻尼的輔助滑塊。

關鍵字

線性滑軌；減振輔助塊；自然頻率

並列摘要

Following with consumer electronics and industrial technology developmentally faster that forced function and quality keeping promotion and change. According to cutting precision and production quality, that factor influence with cutting chatter and geometrical errors. Therefore, YCM inc provided the research machine to our lab for solving this problem. But, machine tool included a lot of component, so analyzing is very difficult. This research used Analytic Hierarchy Process to assess this system for shorten research time. After using this approach, we find out that important factor is linear guideway, because of linear guideway of stiffness obviously is weak. That is why this research went to focus on this component. This research provided a method to solving this situation that is weak stiffness on which assembling auxiliary slider between the linear guideway. That design conception is according to bi-curve and combine a factor of hinge that is increasing sensitivity of the component. We hope that can increase milling process of stiffness of machine. At the innovation design process, we think 9 different structure. Finally, we test this system that added our auxiliary slider and we can according to data that well do.

並列關鍵字

linear guidway ； stiffness slider ； natural frequency

參考文獻

15. 張東權，汽缸壁拋光專用機之設計與驗證研究，碩士論文，國立台北科技大學機電整合所，台北市，2007。

3. 周政賓、簡國瑜，精微複合模組工具機精度改善探討

17. 璩顥，利用振動訊號診斷橋樑結構損壞之研究，碩士論文，國立台北科技大學製造科技研究所，2011。

9. YIN Zidong, BONIS Marc and TAO Hua, “Design of a Linear Guideway on rolling elements for Ultra Precision Meso-Machine Tools,” IEEE, 2010,pp.3053-3056

10. Pawel Majda, “Modeling of geometric errors of linear guideway and their influence on joint kinematic error in machine tools,” Precision Engineering 36(2012)369-378.

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被動式剛性輔助滑塊之設計與研製

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