锥柄钻头
Internal upset taper design of a drill pipe based on stress concentration analysis
基于应力集中分析的钻杆内加厚过渡结构设计
Combined taper pipe tap and core drill
扩孔钻和锥管丝锥复合刀具
Improvement of Tail Hardening Process for Taper Handle Drill
锥柄钻头淬尾工艺的改进
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。
A Taper-face Grinding Device for Twist Drill
麻花钻锥面磨削装置
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