「高速切削」（HSM或HSC）之名詞，最近常用於形容在高轉速下（通常為10,000 - 100,000 rpm）之小直徑端銑刀對工件進行加工。高速切削最先用於航空工業之輕金屬之加工，最具代表性的為鋁金屬，近幾年來模具業開始使用此種技術進行模具之加工，其中包含硬化模具鋼之加工。
本論文中進行高速（5,000 - 15,000 rpm）銑削實驗，用氮化鋁鈦（TiAlN）鍍膜碳化鎢球形端銑刀具銑削硬化（硬度 40 - 53 HRC）JIS SKD61（AISI H13）模具鋼之研究。加工參數範圍為最高切削速度 49 - 205 m/min，每齒進給 0.025 - 0.05 mm/tooth，軸向切深 0.25 - 0.5 mm 及 徑向切深 0.2 mm，乾式及切削液冷卻方式同時評估。研究加工參數對刀具磨耗（壽命）、切屑形成、切削力及表面粗糙度之影響及加工參數的重要性評估。實驗結果顯示加工經硬化之SKD61工件時，應使用較高之主軸轉速（切削速度）加工，尤其是切削硬度53 HRC之工件，同時建議使用乾式切削。其中發現較不同一般之處為切削硬度53 HRC工件時，在主軸轉速（切削速度）較高之情形，刀具磨耗反而較少。

The terms 'High Speed Machining' (HSM) and 'High Speed Cutting' (HSC) have been used recently to describe end milling with small diameter tools at high rotational speeds, typically 10,000-100,000 rpm. HSM was first applied in the aerospace industry for the machining of light alloys, notably aluminum. In recent years the mould and die industry has begun to use the technology for the production of components, including those manufactured from hardened tool steels. The study is performed an experimental investigation of high speed (5,000 - 15,000 rpm) ball milling of hardened (hardness 40 - 53 HRC) JIS SKD61 (AISI H13) tool steels using TiAlN coated cemented tungsten carbide tooling. The machining parameters involved were; highest cutting speeds in the range of 49 to 205 m/min, feed per tooth variation from 0.025 to 0.05 mm/tooth, axial depth of cut from 0.25 up to 0.5 mm, and radial depth of cut of 0.2 mm. Dry and flood coolant cutting conditions were used. The effects of different process parameters on the tool wear, tool life, chip formation, cutting force and workpiece surface finish have been studied. The experiment results show that higher cutting speed is recommended especially when workpiece hardness of 53 HRC was machined. Dry cut is also recommended. An unusual phenomenon observed, tool worn out slower at the higher spindle speed (higher cutting speed) when workpiece hardness of 53 HRC was machined.

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