基于切削和振动理论，利用有限元技术对微细钻头振动钻入动力学特性进行了深入地研究。
Based on cutting and vibrating theories, the dynamic behavior of micro drill is studied by using the finite element method.
利用有限元技术对微细钻头超声轴向振动钻入横向偏移过程进行深入分析。
Transverse excursion process of micro drill in ultrasonic longitudinal vibration drilling is analyzed by using finite element method.
便携式手提电动工具。手柄振动的测量。第3部分：岩石钻头和旋转锤。
Hand-held portable power tools. Measurement of vibrations at the handle. Part 3 : rock drills and rotary hammers.
分析了微小孔钻头轴向振动入钻时特殊的动力学行为及其对入钻定位误差的修正作用。
This paper analyses the special dynamic behavior of entering drilling of micro drill with vibration in the direction of axis and its correction function to location error of entering drilling.
为了实现依据钻柱动力学的井眼轨迹控制，应特别重视钻柱振动特性与钻头受力状况的相互影响。
Finally, in order to control the well path by dynamics, great attention should be paid to the interaction between bit and drill string.
分析了该钻头的结构和刃磨特点，进行了振动钻削试验。
The structures and tool grinding features were analyzed and vibration drilling experiments were done.
随钻地震技术是利用钻井期间旋转钻头的振动作为井下震源。
It USES the vibrations produced by a drill bit while drilling as a downhole seismic energy source.
论述了振幅与振动钻削机理之间的关系以及对振动钻削钻头寿命的影响。
The relation between amplitude and vibration drilling mechanism and the impact of amplitude upon the life of drill with vibration drilling are described.
在建立牙轮钻头与井底岩石互作用模型的基础之上，建立了基于钻柱和岩石互作用下的牙轮钻头横向振动动力学模型。
On the basis of the interaction model between formation and rock bit, a lateral vibration dynamic model of the rock bit was established under the interaction between drilling string and rocks.
结果表明，在地层随机激励作用下，钻柱的振动将会引起钻压的波动，从而影响钻头的寿命及其钻进的速度。
The results show that the vibration of drilling strings will produce the fluctuation of weight on bits by random excitation, so the bit life and drilling rate are affected largely.
分析了小直径深孔振动钻削对钻头的要求；设计了一种新型内排屑深孔钻头；分析了该钻头的结构和刃磨特点，进行了振动钻削试验。
Based on analyzing the demands of small-diameter deep-hole drill for vibration drilling, a new inner-chip removal drill was designed.
微型钻头磨床砂轮轴振动严重地影响了钻头加工精度。
The machining accuracy of microbit is worse for the vibration of grinding wheel spindle.
先进的近钻头传感器可实时测量地层早期参数和井眼动态变化系列参数，比如倾斜度、伽马射线方位角、转角度、粘滑、振动及其他钻井参数。
Advanced sensors measure inclination, azimuthal gamma ray, whirl, stick-slip, vibration, and other drilling parameters for early detection of formation and borehole dynamic changes.
实验结果表明，不同的钻头选型将直接影响钻柱振动的强弱，采用合适的钻头型号将减轻井下事故的产生。
The experiment is made which simulates drilled rock by two kind of cone bits. The result shows that different bits cause the vibration …
研究认为钻柱振动是一受迫振动问题，需要将井底岩石-钻头-钻柱-水龙头作为一个“钻柱振动系统”来对待；
Our research demonstrate that the drill string vibration is forced vibration, it needs to consider the rock-drill bit-drill string-swivel as the "drill string vibration system";
研究认为钻柱振动是一受迫振动问题，需要将井底岩石-钻头-钻柱-水龙头作为一个“钻柱振动系统”来对待；
Our research demonstrate that the drill string vibration is forced vibration, it needs to consider the rock-drill bit-drill string-swivel as the "drill string vibration system";
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