擺線銑削SKD61工具鋼時刀腹磨耗及材料移除率之探討

A Study on Flank Wear and Material Removal Rate use Trochoidal Milling for SKD61 Tool Steel

李柏賢(Lee Po-Hsien)

指導教授 ： 簡文通

國立屏東科技大學/工學院/機械工程系所/碩士(2020年)

https://doi.org/10.6346/NPUST202100131

摘要

本研究是針對SKD61工具鋼進行擺線銑削時，探討刀腹磨耗及材料移除率之特性。實驗步驟為分別使用擺線單向銑削與擺線雙向銑削兩種方式。第一階段是利用田口法L16(45)直交表規劃不同控制參數組合對工件銑削，量測刀具磨耗及材料移除率，並分別求得其最佳化參數組合。選用的控制參數為線速度、每刃進給、步進量、切削寬度及切削深度。結果顯示當以最小刀腹磨耗考量時之最佳參數組合，在單向擺線銑削時與直交表規畫之最佳實驗結果為改善3.32%，在雙向擺線銑削時則改善4.88%，即使用單向擺線銑削比使用雙向擺線銑削可得到更好的結果為2.27%。當以最大材料移除率考量時之最佳參數組合，在單向擺線銑削時與直交表規畫之最佳實驗結果為改善15.09%，在雙向擺線銑削時則改善5.77%，即使用雙向擺線銑削比使用單向擺線銑削可得到更好的結果為14.67%。第二階段是進行TOPSIS多重品質分析，針對兩種擺線銑削在同時考量刀腹磨耗與材料移除率進行分析。在使用單向擺線銑削時，刀腹磨耗較第一階段平均值改善49.79%，而材料移除率較第一階段平均值改善了58.03%。在使用雙向擺線銑削時，刀腹磨耗較第一階段平均值改善2.11%，而材料移除率較第一階段平均值改善了59.19%。本研究結果有助於在擺線銑削加工，同時考量刀具壽命與生產效率時，探討何者為影響較大的控制參數，並以貢獻度做為調控控制參數之參考依據。

關鍵字

擺線銑削 ； 刀腹磨耗 ； 材料移除率 ； 田口法 ； TOPSIS多重品質分析

並列摘要

This study examines SKD61 tool steel used for trochoidal milling with considerations given to flank wearing and material removal rate. Different cutting parameters from the Taguchi L16(45) orthogonal array are used on unidirectional trochoidal milling and bidirectional trochoidal milling and the performances of each are assessed. Blade flank wearing and material removal rates are examined in order to find the optimum parameter combinations.The results of the experiment show,For flank wear, after determining the optimum parameters, the experiment show that the unidirectional trochoidal measurement data were better than the optimum parameters group on the orthogonal array by 3.32%.The bidirectional trochoidal measurement data were better than the optimum parameters group on the orthogonal array by 4.88%.The result of the unidirectional trochoidal is 2.27% better than the result of using the bidirectional trochoidal.For material removal rate, after determining the optimum parameters, the experiment show that the unidirectional trochoidal measurement data were better than the optimum parameters group on the orthogonal array by 15.09%. The bidirectional trochoidal measurement data were better than the optimum parameters group on the orthogonal array by 5.77%.The result of using the bidirectional trochoidal is improved by 14.67% compared with the result of using the unidirectional trochoidal.After performing TOPSIS multiple quality analysis, the results of the tool belly wear showed that the use of one-way trochoidal to the total index in the orthogonal table was improved by 49.79%.The use of two-way trochoidal to the total index in the orthogonal table was improved by 2.11%. The result of the material removal rate shows that the total scale of the orthogonal table is improved by 58.03% by using the one-way trochoidal.The total scale of the orthogonal table is improved by 59.19% by using the two-way trochoidal.The results of the analysis conducted in this study can be used by those seeking to improve tool usage and product production efficiency during trochoidal milling operations by controlling factors that have greater impacts. These contributions can serve as a reference for regulating processing parameters.

並列關鍵字

Trochoidal Milling ； Taguchi Method ； TOPSIS ； Flank Wear ； Material Removal Rate

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