大直径桩基础工程成孔钻具ii型钻具总体设计 关键词：成孔钻具；行星运动；气举反循环排渣。 [gap=652]Keywords: hole drill machine；planet movement；aliminate the dregs with air anti circulate.
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Drilling: refers to the use of drilling or milling machine drill hole of the workpiece process.
钻孔：指在钻床或铣床上使用钻头对工件进行打孔的工艺过程。
This machine bed can pack to the head of clip-drill and the drills with many bore, making drill a hole more convenient.
本机床可装钻夹头和多孔钻座，使钻孔时更加方便。
The interior circumferential wall of the connecting pole can be equipped with the thread hole or the taper hole connecting with a machine tool and an electric drill.
连接柱的内圆周壁上可设有与机床和电钻连接的螺纹孔或锥孔。
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