本研究乃針對勾狀型塑膠卡扣模組設計一個完整的研發流程並使用CAE進行分析研究。由於卡扣資料並不多見而且卡扣設計種類繁多,所以尋找資料製作並不容易。本研究為追求接近真實,因此材質模擬分析方面乃與奇美公司索取相關材質資料。卡扣設計方面參考卡扣設計計算式與模具塑膠件成形經驗值來定義求出卡扣的長、寬、厚度等等設計參數尺寸。本研究使用Pro/ENGINEER繪圖製作出第一個模組,當第一個卡扣模組設計完成後,再使用有限元素軟體Pro/MECHANICA分析得到最佳化形狀,之後依此最佳解去添加對卡扣有影響的特徵來改善形狀,例如增加倒圓角(Round)、肋 (Rib)與移除材料 (Remove material)等特徵去分析模擬,直到各個模組收斂找出最佳解數值,藉分析各個特徵模組最佳化結果再探討求解出這個開發過程理想的卡扣形狀,並將此經驗傳承使往後卡扣結構設計者得到適當改善建議參考。 本文採用之分析評估模式,採用較嚴謹的方式來求取最佳化卡扣形狀,幫助設計者於開發初期預估產品強度、發掘並改善問題,使之縮短設計開發時間與降低成本,進而提高設計者的判斷經驗與提升產業競爭力。
The research is design a complete and development procedure for plastic snap design of hook model. The research also uses CAE to conduct the optimization analysis research. Because the data of snap is not easy to find and the design type are various, therefore to collect the related information are not easy. In order to approaches the reality , this research got the related material data from Chi-Mei Corporation for simulation and experiment. The research design use traditional mechanics operation regard as max stress and experience design value calculating the plastics pieces length、width and thick design parameter size. The research uses Pro/ENGINEER soft to make first snap drawing module. After finish design the first snap module then use Pro/MECHANICA to analyze to get the optimization shape. Then according the best module to add feature improve snap shape. For example add rib、 lead round corner and remove material to analyze simulation , until each module find out optimization number value. Then we can use the analyze result to find optimization of snap shape and use the experience reference for this structure designer in the future. The analyze of this research is use more conscientious way to find the optimization shape of snap .It help the designer in initial stage developing and assess the structure good or not of products. Explore and improving the question in advance, make design construction period shorten and lower costs. In the future more experience in use CAE not only can improve designer's judgement experience and can improve industry's competitiveness.