論文名稱:

鑽石磨棒對氧化鋁(Al_2 O_3)陶瓷加工技術之研究

Study of Machining Technology for Al_2 O_3 Ceramics Using Diamond Bar

研究生:

柯智譯

指導教授:

李金山

          學號:

97017011

畢業學年度:

100

      出版年:

民100

關鍵字:

鑽孔 Drilling

脆裂 Crack

田口法 Taguchi Method

摘要:

本研究主要是以鑽石磨棒針對純度99.7%氧化鋁(Al_2 O_3)陶瓷進行加工，並搭配田口法實驗找出最佳化參數。

實驗主要可分為兩大部份：

一、鑽孔出口端脆邊實驗：實驗選擇4種鑽削參數：主軸轉速、Z軸進給速率、每層切深、鑽石磨粒大小，同時藉由Micro CAM軟體進行出口端脆裂面積之量測，並由田口法實驗分析得知其最佳化參數組合為主軸轉速25000rpm、Z軸進給速率10mm/min、每層切深0.02mm、鑽石磨粒大小#140，經驗證實驗發現最佳化參數組合可有效降低脆裂面積的產生，其中每層切削深度影響非常顯著貢獻度為65.873%，且所得之S/N比與預測最佳化值之S/N比之誤差為3.699%。

二、磨削之表面粗糙度實驗：選定主軸轉速、進給速率、切削深度及鑽石磨棒之磨粒大小等四項作為實驗因子，得知最佳化參數水準組合為主軸轉速30000rpm、進給速率5mm/min、每層切深0.06mm、鑽石磨粒大小#400。其中進給速率影響較為顯著貢獻度為43.813%，且所得之S/N比與預測最佳化值之S/N比其誤差為9.325%。

This study is based on diamond grinding rods for 99.7% purity alumina (Al_2 O_3) ceramic processing, and experiment with the Taguchi method to find optimal parameters.

    Experiments can be divided into two parts:

    A crisp outlet hole edge experimental: experimental selection of four drilling parameters: spindle speed, Z-axis feed rate, depth of cut on each floor, diamond grit size, but by Micro CAM software for brittle fracture area of the outlet measured by the Taguchi method of experimental analysis that the optimal parameter combination of spindle speed 25000rpm, Z-axis feed rate 10mm/min, each depth of cut 0.02mm, diamond grit size # 140, was found proven the most best combination of parameters can effectively reduce the production area of brittle fracture, in which the depth of each cut is very significant impact on the contribution of 65.873%, and the income of the S/N ratio and the predicted optimal value of S/N ratio of error of 3.699% .

    Second, the milling of the surface roughness experiment: selection of spindle speed, feed rate, cutting depth and the size of the diamond abrasive grinding of the four rods as the experimental factor, the standard argument that the best combination of spindle speed 30000rpm,  feed rate 5mm/min, each depth of cut 0.06mm, diamond grit size # 400. Feed rate which is more significant impact on the contribution of 43.813%, and the income of the S/N ratio and the predicted optimal value of S/N ratio the error is 9.325%.