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→刀尖形状及选择
为提高刀尖的强度和减小工件的表面粗糙度，常将刀尖修磨成三种形状：修圆刀尖、倒角刀尖和倒角带修光刃，如图所示。
[[File:7a463200c82b46089f1004e4a1c17497.png|缩略图|300px居中|700px|[http://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=副偏角&step_word=&hs=0&pn=77&spn=0&di=63590&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=3188822230%2C3617796645&os=3244668646%2C3350788070&simid=0%2C0&adpicid=0&lpn=0&ln=505&fr=&fmq=1581124396286_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined©right=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=15&oriquery=&objurl=http%3A%2F%2F5b0988e595225.cdn.sohucs.com%2Fimages%2F20170627%2F7a463200c82b46089f1004e4a1c17497.png&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bf5i7_z%26e3Bv54AzdH3FwAzdH3F8cd9a9bd0_cbnl9l&gsm=4e&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 原圖鏈接][http://www.sohu.com/a/152404827_583949 来自搜狐]如图所示：刀尖形状]]
a)修圆刀尖b）倒角刀尖c）倒角带修光刃
具有修光刃的刀具，若切削刃平直，装刀精确，工艺系统刚度足够，即使在大进给量切削条件下，仍能获得很小的表面粗糙度。<ref>[http://www.sohu.com/a/152404827_583949 机械加工影响粗糙度的因素 ],搜狐网，2017-06-27</ref>
==视频==
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