本論文主要探討以雷射加工對壓克力材質進行加工時,進行各項加工參數對加工品質的影響,由於目前市面並無雷射加工對壓克力加工時準確的加工參數可供參考,故本論文目的在於建立壓克力材質之最佳化參數。 本論文採用田口法直交表進行 之實驗因子配置,建立雷射加工壓克力的參數與目標特性之經驗公式。另一方面,期望藉由最佳化參數的導入,來大幅提升壓克力表面品質與加工效率、降低生產成本;並且利用雷射的加工特性,改善傳統繁雜加工製程情形,以符合目前產業綠色製造的趨勢。 雷射加工機系統以二氧化碳雷射加工機型號HELIX(50W)、mini(30W)做為實驗機台。影響雷射加工品質的主要因素有解析度、雕刻速度、功率強度與雕刻次數等,使用表面輪廓儀對成品做表面粗糙度試驗,求得粗糙度數值做為品質特性資料比較。記錄雷射加工參數,並以求得之數據進行統計分析。從顯微鏡觀察試片表面組織,進而找出品質優良的試片與最佳化試片,藉由實際對壓克力材質進行加工,得知田口最佳化成效優良。確認實驗無誤,藉此可做為爾後在學術界、產業界的參考依據。 關鍵詞:雷射加工、壓克力、田口最佳化
This thesis mainly focuses on discussing the impact of machining parameters on machining quality when acrylic materials are machined by laser. At present, there are no accurate machining parameters of acrylic materials machined by laser for reference on the market, therefore, this thesis aims at setting up optimized parameters of acrylic materials. This thesis adopts Taguchi’s orthogonal arrays to allocate experimental factors of and set up parameters of acrylic materials machined by laser and empirical formulas of target properties. It’s expected to substantially improve surface quality and machining efficiency of acrylic materials and reduce production cost by introducing optimized parameters. In addition, it’s hoped to improve traditional complex machining process by making using of machining characteristics of laser in order to meet the trend of green manufacturing of current industry. The system of laser machining equipment takes HELIX (50W) and mini (30W) of CO2 laser machining equipment as experimental machines. Factors that impact quality of laser machining are resolution, engraving speed, power intensity, engraving frequency, etc. and surface profilers are used to test surface roughness of finished products and calculate specific values to compare data of quality characteristics. Calculate and record parameters of laser machining and make statistical analysis of calculated data. Then observe surface structure of test pieces through microscopes and find out quality pieces and optimized pieces. Through practical machining on those acrylic materials, we can work out results of Taguchi optimization. If the experiment is confirmed to be correct, then it can be used as reference for future study among academic and industrial circles. Key words: laser machining, acryl, Taguchi optimization