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題 名 | The Analysis of Grinding Machinability for the High-speed End Mill of Cemented Tungsten Carbide=碳化鎢高速端銑刀研磨性能分析 |
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作 者 | 呂淮熏; 李炳寅; 鐘証達; | 書刊名 | 國立虎尾科技大學學報 |
卷 期 | 26:3 2007.09[民96.09] |
頁 次 | 頁9-16 |
分類號 | 446.893 |
關鍵詞 | 表面粗糙度; 磨削參數; 刀具研磨; Surface roughness; Tool grinding; Grinding parameters; |
語 文 | 英文(English) |
中文摘要 | 本文以五軸CNC 刀具磨床研磨碳化鎢端銑刀,探討磨削參數對表面粗糙度之影響。表面粗糙度值的大小對於端銑刀的耐磨性、潤滑性、精度、噪音與壽命均有顯著的影響,故表面粗糙度為評估刀具研磨品質之ㄧ重要的性能指標。影響表面粗糙度主要磨削參數(grinding parameters) 有磨削數度(grinding speed) 、進給率及磨輪粒度(grain mesh size) 。文中將每一磨削參數取三個水平,實驗設計採用全因子設計(full factorial design) 。實驗結果顯示,在三種可控制的磨削參數中,grain mesh size 對表面粗糙度影響程度最大。磨削速度表面粗糙度的影響程度最小。Grain mesh size # 1800 時,進給率對表面粗糙度沒有顯著影響。欲得到最小的表面粗糙度,磨削條件組合為:磨削速度1600m/min ,進給率100mm/mim,grain mesh size #800 。欲提昇研磨效率,磨削條件組合為:磨削速度1600m/min,進給率400mm/min,grain mesh size #800 。 |
英文摘要 | This paper investigates the influence of grinding parameters to surface roughness in a case of grinding a high-speed endmill of cemented tungsten carbide using a five-axis CNC tool grinder. The values of surface roughness have a significant influence on wear resistance, lubricating capability, precision, noise and life of an endmill. Therefore, it can be served as a significant performance index for evaluating the grinding quality of tools. The grinding parameters effecting surface roughness most are grinding speed, feed rate, and grain mesh size. In this study, three levels are selected for each grinding parameter. The layout of experiments is obtained using the full factorial design. The results show that, among these three controllable grinding parameters, grain mesh size has the most significant influence on surface roughness, while grinding speed has the least. As grain mesh size is #800, feed rate has no notable effect. In order to get a desirable minimum value for surface roughness, the optimal combination of grinding conditions is grinding speed of 1000 m/min, feed rate of 100 mm/min, grain mesh size of #800. As for enhancing grinding efficiency, the desired combination of grinding conditions is grinding speed of 1000 m/min, feed rate of 400 mm/min, and grain mesh size of #800. |
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