应用梯度演算法最佳化光学镜片模具之异型水路设计smartdo.pdfVIP

應用梯度演算法最佳化光學鏡片模具之異型水路設計 * 張柏揚，鍾禎元 中央大學 機械工程學系，桃園市，台灣 * Email: cychung@.tw 【摘要】塑膠鏡片具有重量輕且大量生產的優點，因此大口徑非球面塑膠鏡片在光學工業上扮演重要 的角色。射出成型製程是目前用於塑膠鏡片的主要生產技術，而高效率之冷卻水路則是模穴內均溫的 關鍵。近年來，由於金屬積層製造技術的興起，使三維、高效率異型水路的製造得以實現，然而，異 型水路的設計非常複雜，需結合最佳化分析，本研究整合有限元素分析與梯度演算法搜尋冷卻水路配 置的最佳化參數。依據模擬結果得知，使用最佳化可縮短 27.74% 的頂出時間，且可改善 65.11%的表面 溫差，顯示本研究方法對於鏡片開發時程的縮減與製造品質的提昇將產生直接、明顯的效益。 【关键词】異型水路；梯度演算法；雷射積層成型 Optimization of conformal cooling channels in optical-lens molds by gradient-based algorithm * Po-Yang Chang, Chen-Yuan Chung Department of Mechanical Engineering, National Central University, Taoyuan City, Taiwan * Email: cychung@.tw Abstract: Plastic lenses possess both light and mass-producing advantages, so the large-diameter aspheric plastic lens plays an important role in the optical industry. Injection molding process is the popular technolo- gy in the plastic optical manufactures. High efficient cooling channel is the key factor of making a uniform temperature distribution in mold cavities. With the recent advent of laser additive manufacturing, fabrication of three-dimensional cooling channels, conformal cooling, becomes realizable. Still, the design of conformal cooling channels is very complex and requiring optimized analyses. This study combines the finite element analysis with gradient-based algorithm for searching the optimal parameters of cooling channel arrangement. According to the results of simulation, using optimized analyses can shorten 27.74% of ejection time and de- c