1) large cutting element drill bit
大切削具钻头
1.
On the basis of experiment results from rock fragmentation by slantly penetrated cutting toolsthe drilling process of large cutting element drill bits is analysed and the penetration rate formulae for large cutting element drill bits in the case of rotary drilling is also derived.
根据刃具斜切入破岩的一些试验研究成果，分析了大切削具钻头的钻进过程，推导出了大切削具钻头进行回转钻进的机械钻速公式。
2) boring head
钻具的切削头
3) chipping type bit
切削型钻头
4) drill edge
钻头切削刃
5) bit cutting angle
钻头切削角
6) bit front aggressivity
钻头纵向切削
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