研究生: |
林國豪 Kuo-hao Lin |
---|---|
論文名稱: |
葉輪五軸加工之刀具防撞策略研究 A Study of Strategy for Avoidance of Tool Collision for Five-axis Machining of Impeller |
指導教授: |
林清安
Ching-an Lin |
口試委員: |
簡孟樹
Meng-shu Jian 鍾俊輝 Chun-hui Chung |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2014 |
畢業學年度: | 102 |
語文別: | 中文 |
論文頁數: | 74 |
中文關鍵詞: | CAD/CAM 、離心式葉輪 、五軸加工 、側傾角度 、導引曲線 |
外文關鍵詞: | CAD/CAM, Centrifugal impeller, Five axis machining, Tilting angle, Pivot curve |
相關次數: | 點閱:241 下載:0 |
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隨著製造業的加工水準日益提升,產品的複雜性與多樣化將成為市場的主流,五軸加工以其高自由度的加工特性,解決了諸多傳統三軸加工的限制,逐步成為現有精密加工產業的主流。以離心式葉輪為例,其包含高度扭轉的曲面,伴隨著葉片與葉片之間的空間重疊特性,使得葉輪的加工容易遭遇刀具過切及刀把碰撞的問題,本研究針對此問題提出「導引曲線」的概念,以及改變刀具「側傾角度」之解決方案,藉此規範刀具於空間中之擺動位置,以達到防止刀具過切及刀把碰撞的目標。除此之外,本論文亦將上述之刀具防撞解決方案應用於各種不同形式的離心式葉輪,包含:葉片數量的不同、葉片扭轉程度的差異,以及含有分流葉片的葉輪,並藉由套裝軟體Creo進行刀具路徑的規劃以及實體切削模擬,以驗證本研究提出的法則之正確性。
Since the improving standards in manufacturing and processing, manufactured goods are increasingly complex and diverse. Five axis machining technology resolve many restrictions in the traditional approach of three axis machining and understandably, they are becoming the mainstream technology in precision machining due to great flexibility. For example, centrifugal impellers contain highly twisted surface. The spatial overlay between blades makes impellers prone to overcuts and collision. Therefore, this paper proposes the concept of “pivot curve” and the employment of tool tilting angles as solutions to the problems of overcuts and collision by regulating the swing position of the tool. Meanwhile, this paper applies the solution to avoid collision to different types of centrifugal impellers, such as different number of blades, the variance in the degree of torsion of the blade, and the impellers with splitter blades. A comparison of the tool path calculated with the software package Creo and the cutting simulations proposed in this thesis is made in order to validate the accuracy of the methodologies developed by this paper.
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