研究生: |
謝忠霖 Chung-Lin Hsieh |
---|---|
論文名稱: |
使用Creo進行連續沖模特殊製程 之雙排排配料帶設計 Using Creo to Design Stamping Strips for Paired Parts with Special Manufacturing Opreations |
指導教授: |
林清安
Ching-An Lin |
口試委員: |
謝文賓
Win-Bin Shieh 鄭逸琳 Yih-Lin Cheng |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2019 |
畢業學年度: | 107 |
語文別: | 中文 |
論文頁數: | 140 |
中文關鍵詞: | 連續沖模 、料帶佈置 、特殊沖壓製程 |
外文關鍵詞: | Progressive dies, Strip layout, Special stamping processes |
相關次數: | 點閱:179 下載:0 |
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連續沖模之料帶佈置在模具設計中是極為重要的工作,有效的料帶佈置可降低生產成本並提高獲利,然而現有結合3D CAD軟體之排料系統仍有很多連續沖壓製程的因素尚未考量,故所排配的料帶可能強度不足或浪費材料,此外,若有特殊的沖壓製程,則易導致加工道次相互干涉的現象。本研究以Minkowski Sum為理論基礎來進行自動化料帶排配,並納入料橋設定準則及特殊製程的考量,使橋繫帶在最小化材料的情況下仍保有適當的強度,以及排配特殊製程的雙排加工道次時,上排與下排的道次加工不會相互干涉。本研究亦藉由比較不同的排料方式,找出同一料帶使用何種排列形式能獲得較佳的材料利用率,並據以建立料帶的3D CAD幾何模型,來驗證是否可完全避開造成加工道次相互干涉的情形。
本研究以兩個含有特殊沖壓製程的板金零件進行實例驗證,結合現有之連續沖模排料方法與特殊沖壓製程考量,使設計完成的料帶更達到實用之要求。
The strip layout of progressive die is an extremely important task in mold design. Effective layout of the strip will keep the cost down and improve the profitability. However, there are lots of problems that haven’t been considered in the existing 3D-CAD-based strip layout system. For example, the strip layout may cause insufficient material strength or unnecessary material waste. In addition, if there is a special stamping process, it may cause the stamping stages to interfere with each other. This study uses the theory of Minkowski Sum as the basis to automate the strip layout of progressive die while eliminating the aforementioned problems. It takes into account the empirical rules of bridge design and special stamping processes so that the strip can retain proper strength when it is in a minimum material condition. For a special stamping process, the strip layout for paired parts can ensure free of collision among the stamping stages of the upper and lower parts. By comparing different ways of strip layout, this study is capable of finding the layouts with better raw material utilization. 3D CAD geometric models are created for those layouts to verify that the interference among stamping processes can be completely avoided.
This study uses two sheet metal parts with special stamping processes to implement the proposed methodology. Combining the existing strip layout method and the consideration of special stamping processes, the designed strip can fit more practical needs.
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