| Summary: | 碩士 === 國立虎尾科技大學 === 機械與電腦輔助工程系碩士班 === 101 === The domestic and foreign industry develops quickly owing to the recovery of the technology industry, rapid economic growth, and diversification of products. The requirements of the standard for products are also relatively increased. The high accuracy of cutting tools and milling processes are also extremely important. How to effectively improve the accuracy of machining is a critical issue.
In this study, the experiment was divided into rough machining and finish machining, and the material of workpieces is tungsten carbide. The Taguchi method was utilized for assigning different tool geometry and machining parameters due to this approach could save the time and cost effectively. Furthermore, it could achieve high experimental efficiency to enhance the robustness of manufacturing processes. An L32 (21x49) orthogonal array was applied to the experiment and the variance was analyzed. We employed the gray relational analysis to obtain the optimal combination of factors.
In order to improve the efficiency of rough machining, one could increase the radial rake angle and clearance angle, and reduce the axial rake angle and clearance angle of cutting tools by the experimental verification. The tool geometry had low effect on finish machining. However, one could decrease the milling speed and the depth of cut to obtain good surface roughness.
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