超塑成形製作機翼整流罩之模具設計及分析; Mold Design and Analysis in Superplastic Forming the Airliner Wing’s Fairing Cover

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Title:	超塑成形製作機翼整流罩之模具設計及分析;Mold Design and Analysis in Superplastic Forming the Airliner Wing’s Fairing Cover
Authors:	吳冬彥;Wu,Dong-Yan
Contributors:	機械工程學系
Keywords:	超塑成形;5083鋁合金;模具設計;製程設計;Superplastic Forming;Aluminum alloy 5083;Mold Design;Manufacturing Process Design
Date:	2013-06-21
Issue Date:	2013-07-10 12:08:02 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文即以飛機製造業生產之鋁合金蒙皮零件“機翼前緣整流罩”所使用的模具與製程來做研究的方向。一般超塑成形製程多以平鈑直接吹氣成形，成形模具深寬比較小，而本研究之機翼前緣整流罩所設計出來的模具深寬比較大，無法使用平鈑吹製製程，為了改善深寬比，在執行超塑成形之前，先將鋁合金5083鈑材進行預成形折彎加工。折彎加工目的為了使鈑材在尚未執行超塑成形前，即可預先縮短材料與成形模具之間的成形距離，使工件能順利完成超塑成形。另外也設計出可減少成形距離的製程，如兩階段氣吹成形製程及熱引伸輔助製程等。由於全尺寸實驗所需耗費的成本較大，如電費、鋁合金鈑材等，加上實驗時間須配合漢翔生產線的空餘時間，所以能實驗的次數有限，為了減少成本以及增加實驗效率，本研究將原模具設計成縮小版尺寸，並對母模成形輪廓做設計，如雙峰等高設計、V形底部R角放大設計、V形底端降低設計等，分析各製程及模具設計的優劣，設計出最佳的成形模具製程。 The study focuses on the mold and manufacturing process of aluminum alloy spare parts “airliner wing’s fairing cover” for aircraft manufacture industry. Superplastic forming manufacturing process usually using aluminum alloy plate and the molding contour is designed by low aspect-ratio. In this study, the airliner wing’s fairing cover molding contour is designed by high aspect-ratio. The aluminum alloy plates can’t be directly used for superplastic forming process. In order to improve the design of high aspect ratio, the SP5083 sheets bended for a preforming before superplastic forming process. The bending preforming in order to reduce the forming distance between SP5083 sheet and mold, then the spare parts fairing cover can be successfully produced. And there are several designs to reduce the forming distance manufacturing process, such as Two-Stage Superplastic Forming and Hot Draw Mechanical Preforming, etc. Because of large-sized mold and the experments need to comsume large cost, such as electricity bill and aluminum sheet meterials, etc. And the experiment coordinate with AIDC production line free time. So the experiment have restriction on the number. In order to reduce costs and increase the efficiency of the experiment. In this study, the mold is designed a small-sized model. And the mold contour also is designed, different model such as Two-cavity designed have same depth, enlarge the bottom of the V-shape preforming curvature radius, bottom of the V-shape preforming designed lower, etc. Analyzing the merits of the manufacturing process and mold design and choosing the best mold and manufacturing process.
Appears in Collections:	[Graduate Institute of Mechanical Engineering] Electronic Thesis & Dissertation

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