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題 名 | 隧道式切斷刀具形狀最佳化之研究=Optimal Tool Design of the Tunnel-type Punching Machine with Multiple Quality Characteristics |
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作 者 | 高進鎰; 洪崇益; | 書刊名 | 龍華科技大學學報 |
卷 期 | 29 2010.06[民99.06] |
頁 次 | 頁29-36 |
分類號 | 446.893 |
關鍵詞 | 衝壓模具; 田口法; 灰關聯; 衝切; Tunnel-type punching machine; Taguchi method; Grey relational analysis; |
語 文 | 中文(Chinese) |
中文摘要 | 鋼珠滑軌的組成零件是使用輥輪機將鍍鋅鋼鈑或冷轧鋼鈑材連續輥壓成型,接著再以隧道式切斷刀具擺放在龍門衝床上衝切適當長度。由於鈑材經過連續輥壓成型,其工件斷面方向有深度的變化,因此隧道式切斷刀具所使用的刀具形狀,必須隨著工件斷面 變化才能達到期望的衝剪效果。本研究將應用田口方法結合灰關聯分析對隧道式切斷刀具的形狀進行最佳化參數設計,探討8 個形狀因子對衝剪過程中之刀具壽命、工件兩端切斷面差異量、工件表面毛邊量等3 種品質特性的影響,嘗試尋求刀具形狀影響衝剪品質的顯著因子,做為後續刀具最佳化設計的依據。結果顯示,刀口圓角同時對刀具壽命及工件表面毛邊量有最顯著的影響,至於工件兩端切斷面差異量方面則是正切斜角有最顯著的影響,使用田口法分析驗證刀具壽命改善效果達9.96 %,而工件表面毛邊量改善效果23.07 %,至於工件兩端切斷面差異量方面改善效果為30%。當以灰關聯分析多重品質特性對刀具壽命改善效果達18%,工件表面毛邊量改善效果達18%,工件兩端切斷面差異量,改善效果達133%,使用兩種分析法結合有實質的幫助與縮短原有開發周期。 |
英文摘要 | Sheet metals of the galvanized steel or the cold-rolled steel are the materials that usually used to manufacture the components of ball bearing slides. The sheet metal need to form the designed cross-section by using the successive rolling process first, then the semi-finished part is cut into the desired length on the tunnel-type punching machine. Since the workpiece is not a plate, geometries of the cutting tool varying with the non-linear cross-section is necessary to obtain the expected cutting performance. In this paper, ,optimal tool design in cutting the components of ball bearing slides with considering the multiple performance characteristics by using the Taguchi method and grey relational analysis is reported. Three performance characteristics are chosen to evaluate the cutting effects while eight parameters of tool geometry are selected as the controlled factors. Experiments based on the appropriate orthogonal array are conducted first. The normalized experimental results of the performance characteristics are then introduced to calculate the coefficient and grades according to the grey relational analysis. The optimized process parameters that simultaneously lead to better results are then verified through confirmation experiment. The outcome from Taguchi method indicate the radius of the cutting edge is the most significant geometric parameter to the tool life and the burr of cut edge, and that to the width deviation on both sides of the workpiece is tangent angle. From the grey relational analysis showing, optimal process parameters obtain the improvement of 18% on tool life, of 18% on burr of cut edge and of 133% on the width deviation on both sides of the workpiece, respectively. |
本系統中英文摘要資訊取自各篇刊載內容。