複合材料鑽削是一個複雜且效率低的加工製程。同時於鑽削出口 處容易產生脫層，此與刀具幾何形狀與鑽削參數有關。本研究選以複 合特殊管球鑽為測試刀具，以及鑽削參數(進給率、轉速與鑽削形式) 探討其鑽孔加工品質，並與麻花鑽及複合特殊管鑽做一比較。有關本 研究所得之結果，敘述如下：
一. 麻花鑽、複合特殊管鑽與複合特殊管球鑽鑽削過程所產生的 軸向推力大小，與脫層面積並無絕對的關係，其原因可為刀 具之幾何形狀與鑽削形式不同的影響，相對於麻花鑽或複合 特殊管鑽，複合特殊管球鑽因刀具幾何形狀以至於大幅降低 軸向推力。
二. 複合特殊管球鑽相較於麻花鑽或複合特殊管鑽在於複材層板 鑽削上，軸向推力或脫層面積皆能獲得較低的軸向推力與良 好的孔洞品質。
三. 複合特殊管球鑽相較在不同鑽削方式、轉速與進給率的數值 差異皆不大意可說明複合特殊管球鑽對於不同鑽削方式、轉 速與進給率皆能獲得較低的軸向推力與良好的孔洞品質。
四. 在本研究中麻花鑽、複合特殊管鑽與複合特殊管球鑽於軸向
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推力與脫層面積效果較為良好之加工條件如下：
1. 軸向推力
(1)麻花鑽：轉速 1200 rpm、進給率 16 mm/min、攻牙鑽削
(2)複合特殊管鑽：轉速 1200 rpm、進給率 16 mm/min、一般鑽削 (3)複合特殊管球鑽：轉速 1200 rpm、進給率 16 mm/min、攻牙鑽
削
2. 脫層面積
(1)麻花鑽：轉速 800 rpm、進給率 32 mm/min、一般鑽削或攻牙 鑽削
(2)複合特殊管鑽：轉速 1200 rpm、進給率 16 mm/min、一般鑽削 (3)複合特殊管球鑽：(a)轉速 1200 rpm、進給率 32 mm/min、一般
鑽削；(b)轉速 1200 rpm、進給率 16 mm/min、攻牙鑽削；(c) 轉 速 1200 rpm、進給率 32 mm/min、啄鑽鑽削
44
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