To raise drilling performance of new micro-drill, a novel method was advanced for reginding of chisel edge.
为了提高新型微钻头的钻削性能，提出了一种适合于微钻头的横刃修磨原理及方法。
ZZM-A drill grinder simple structure, easy operation. One setup to complete grindings on drill web and chisel edge.
a型钻头磨刀机结构简单，使用方便，一次装夹就可以完成钻头的钻尖和横刃的修磨。
A pick, especially with one end of the head pointed and the other end with a chisel edge for cutting through roots.
鹤嘴锄，丁字镐一种鹤嘴锄，尤指一头尖而另一头有可割断根的凿边。
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