Based on the mechanical model of single bit, drilling loads on the cutting head of tunneling machine are simulated by means of computer in this paper.
基于单个截齿的受力模型，对掘进机截割头钻进工况载荷进行了计算机模拟，为截割头的结构设计和参数优化提供了理论依据。
The paper introduces the application of inverter in oil drilling machine.
本文介绍变频器在石油钻机的应用。
This paper introduces the design and application of the drilling machine of middle-sized and small -sized electromotor.
介绍一种中小型电动机机壳安装孔钻孔专用机具的设计和使用。
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