N-004 N-005 铣刀的种类 Type of End mill 铣刀刃数的区别 Differences on number of flute ■ 铣刀的外周刃和底刃的形状 Type of peripheral and end cutting edge ■ 铣刀的刃数 Number of flute 根据铣刀用途选择刃数非常重要。下面对各种刃数的优缺点及其用途进行介绍。 It is important to choose the number of flute of the end mill according to the usage. Introduction of the advantages, disadvantages, and usage of each number of flute are as below. ■ 铣刀的前角 Rake angle at peripheral cutting edge 铣刀的前角因用途而异，主要取决于加工材料。 Variety of rake angles to support different cutting materials. 前角为锐角造型的铣刀注重锋利度，一般适用于非 铁金属和低硬度的加工材料。前角为钝角造型的铣刀 具有高强度刀刃，适用于高硬度钢等材料。 End mill with positive rake angle has a sharp flute that generally compatible with nonferrous metals and low hard materials. On the other hand, the negative rake angle has strong cutting edge to support high hard materials machining. ■ 日进工具的铣刀形状分类 Shapes of NS TOOL’s end mill Type of End cutting edge 平底 Square 方角铣刀 Square end cutting edge 球头Ball 带球状底刃的铣刀 Ball end cutting edge 圆鼻 Corner Radius 圆角铣刀 Square end cutting edge 成型 Formed 用于加工特殊形状的铣刀总称 Generic name for special types Type of Peripheral cutting edge 直刃 Straight 圆筒状外周刃 Cylindrical peripheral cutting edge 锥刃 Taper 圆锥状外周刃 Tapered peripheral cutting edge 长颈 Long Neck 颈径小于外径的形状 Thinner neck diameter than end diameter 锥颈 Taper Neck 颈径小于外径且有角度的圆锥形状 Thinner neck diameter than end diameter but taper shape 平底铣刀 Square End Mill 圆鼻铣刀 Corner Radius End Mill 长颈平底铣刀 Long Neck square End Mill 长颈圆鼻铣刀 Long Neck Corner Radius End Mill 球头铣刀 Ball End Mill 锥颈圆鼻铣刀 Long Neck Tapered Corner Radius End Mill 长颈球头铣刀 Long Neck Ball End Mill 锥刃铣刀 Tapered End Mill 锥颈球头铣刀 Long Neck Tapered Ball End Mill 锥刃球头铣刀 Tapered Ball End Mill 锥刃圆鼻铣刀 Tapered Corner Radius End Mill 2刃 2-flute 3刃 3-flute 4刃 4-flute 6刃 6-flute Features Advantage 排屑良好 Well chip removal 排屑良好 Well chip removal 刀具刚性高 High tool rigidity 刀具刚性高 High tool rigidity Disadvantage 刀具刚性低 Low tool rigidity 难以测量外径 Difficult to measure dia. 排屑不畅 Low chip removal 排屑不畅 Low chip removal Usage 通用 For General use 沟槽和侧面 Slotting & Side milling 侧面 Side milling 侧面 Side milling 铣刀截面 Cross section of end mill 外周刃前角：锐角 Rake angle : Positive 外周刃前角：钝角 Rake angle: Negative 后刀面 Releaf 后刀面 Releaf 前刀面 （前面） Rake 前刀面 （前面） Rake 技术资料 Technical Guidance 技术资料 Technical Guidance 底刃 的形状外周刃的形状 特点 优点缺点 用途
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