端銑刀再研磨磨削參數最適化設計

Design Optimization of Grinding Parameters for Resharpening End-mill

本文以自行開發PC-Based控制的兩軸工具磨床，應用田口法探討端銑刀再研磨時以表面粗糙度為性能指標磨削參數最適化設計。影響再研磨端銑刀表面粗糙度之磨削參數有砂輪主軸轉速、進給率及磨削深度。一系列研磨實驗以量測再研磨端銑刀之表面粗糙度。應用直交表、訊號雜音比及變異數分析求得磨削參數最佳水準組合並了解磨削參數對表面粗糙度的影響。確認實驗顯示，田口法適用於解決端銑刀再研磨表面品質問題。

This study is focused on applying the Taguchi method to the optimization design of cutting parameters for resharpening end-mills using a two-axis tool grinder with a self-developed PC-based controller. The performance index used for optimization is surface roughness. Considering wheel spindle speed, feed rate, and grinding depth of cut as the grinding parameters, a series of grinding experiments were performed to measure the surface roughness data. An orthogonal array, signal-tonoise ratio (S/N), and analysis of variance (ANOVA) were used to find the optimal levels and the effect of the grinding parameters on surface roughness. Confirmation tests with the calculated optimal levels of grinding parameters were carried out in order to investigate the effectiveness of the Taguchi method. The results show that the Taguchi method is suitable for solving surface quality problems of tool resharpening.