| 研究生: |
楊政平 Zheng-Ping YANG |
|---|---|
| 論文名稱: |
快速塑性成型(QPF)於兩階段夾持力對成型厚 度之影響 Effect of rapid plastic molding (QPF) on molding thickness in two-stage clamping force |
| 指導教授: | 李雄 |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系在職專班 Executive Master of Mechanical Engineering |
| 論文出版年: | 2019 |
| 畢業學年度: | 107 |
| 語文別: | 中文 |
| 論文頁數: | 71 |
| 中文關鍵詞: | 快塑成型 |
| 外文關鍵詞: | HDMP, pre-forming |
| 相關次數: | 點閱:14 下載:0 |
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緣由-鋁片的截面厚度均勻分布度一直是重要的一個吹製結果,與
成型後的鈑片強度、吹製成功率,有著重要連結關係,而影響截面厚度
分布均勻度又與以下幾項重要設計與實驗參數有莫大的關係,分別為 1.
沖頭的幾何形狀 2.沖頭引伸的深度 3.材料加工溫度 4.模具夾持力道的
大小 5.鈑片介於氣密環外成型摩擦力 6.脫模劑。
本論文主要以兩階段超塑成型(Quick Plastic Forming)之工法應
用於手機外殼製為研究方向(實驗吹製前 30 秒設計兩階段夾持,在夾持
力 3 頓(小於正常鎖模力 4.2 頓)情況下調整氣壓各為 0.5、1、1.5mpa
各吹製 10 秒)主要目的為探討兩階段造成的內拉夾持造成的收縮,是否
有助於提升鈑片截面厚度平均分布度。藉由兩階段夾持力降低鋁鈑和模
具間摩擦力來增加內拉力,將探討以下三項參數對內拉力的影響,1.兩
階段成型 2.鈑片面積長寬比差異性 3.塗抹脫模劑
最後將以 5083 1mm 鋁鈑材實驗吹製,做截面度的厚度分布度比
較,試圖尋找最佳化截面厚度吹製參數,最後再應用於較成型較困難的
5052 材料。
The cause-aluminum sheet cross-section thickness uniformity has always been an important blowing result,and after the molding sheet strength,blowing success rate,has an important link relationship,and affectther of the uniformity of cross-section thickness distribution and the following important design and experimental parameters have a great relationship,The geometry of the punch 2. Depth of the punch extension 3. Material processing temperature 4. The size of the mold clamping force channel 5.
Sheet sheet is between the extensosiring friction 6. This paper mainly applies the two-stage superplastic forming (Quick Plastic Forming) method to the mobile phone housing system for the research direction (30 seconds before
the experimental blow-up design two-stage clamping, in the case of clamping force 3 tons (less than the normal lock force 4.2), adjust the air pressure of 0.5, 1, 1.5mpa blow 10 seconds) is mainly intended to explore whether the shrinkage caused by the two-stage internal pull grip can
help to increase the average distribution of sheet sheet section thickness thickness.
By reducing the friction between aluminum sheet sheet and mold to increase the internal pull force by two-stage clamping force,the effect of the following three parameters on the internal pull will be explored,1. Twostage forming 2. Sheet sheet area aspect aspect ratio difference 3. Apply ingress excitate iv Finally,it will be 5083 1mm aluminum sheet metal experimental blowing,to do cross-sectional thickness distribution comparison,trying to
find optimized cross-section thickness blowing parameters,and finally applied to the more difficult molding 5052 material.
【1】J. Liu, M.J. Tan, Y.A. Anders, E.W.Jarfors, K.S. Fong and S. Castagne, “Superplastic-like forming of non-superplastic AA5083 combined with mechanical pre-forming”, International Journal Advance Manufacture Technology”, pp.9-11(2011)
【2】翁正誠,“超塑成形模具輪廓設計對其成形厚度之影響”,
國立中央大學機械工程研究所碩士論文, pp.10-20(2000)
【3】楊益郎,“摩擦及潤滑對超塑性 5083 鋁合金快速成形之影
響”, 國立中央大學機械工程研究所碩士論文, pp.6-7(2000)
【4】An investigation into hot deformation of aluminum alloy 5083 S.J. Hosseinipour ,pp08
【5】Y. Luo, S.G. Luckey, P.A. Friedman, Y. Peng,
“Development of an advanced superplastic forming process utilizing a mechanical pre-forming operation”,nternational Journal of Machine Tools & Manufacture, pp.04-09
【6】藍先進,“超塑成形製程設計及模擬以製作機翼零件”, 國
立中央大學機械工程研究所碩士論文, pp.2(2013)