所有深孔钻都是直出屑槽的，并且均为单切削刃。
All gun drills are straight-fluted, and each has a single cutting edge.
本文建立的模型和所采用的研究方法为其他类型的浅孔钻切削力的计算与数值仿真提供了有价值的参考。
The developed model and the research method employed are valuable for the cutting forces calculation and numerical simulation of other kinds of drills with indexable inserts.
夹具在机加工作业时夹持工件，但它不象钻模那样包含引导切削刀具的特殊布置。
A fixture holds the work during machining operations but does not contain special arrangements for guiding the cutting tool, as drill jigs do.
其目的在于提供一种锯、钻定位准确，使用方便，可减少病人损伤的便携式手术用切削工具。
The tool's objective is to provide a portable surgery cutting tool, which can locate sawing and drilling accurately, and is easy to be operated, reducing the damage to the patient.
为扩大这一新技术的应用，本文就枪钻机床和枪钻的结构特点及其切削用量和刀具材料作了介绍。
In order to extend this new technology, the article introduces the mechanism of gun drilling and gun driller, cutting data and tool material.
定钻压、定转速条件下的单切削齿磨损速度试验结果表明，切削齿的线磨损模式是正确的。
On the basis of analyzing cutting mechanisms of cutters, a linear wearing speed model is established by researching the abrasive law of cutters.
得出普通钻磨时的轴向平均切削力和平均扭矩均远大于超声钻磨加工时的轴向平均切削力和平均扭矩；
The research results show that the average axial cutting force and torque of common drill-grinding are greater than that of ultrasonic drill-grinding.
理论分析和实验表明：应用该仿真模型，能在振动钻削过程的不同区段寻找最优的振动参数和切削参数。
Theoretical analysis and experiment show that the optimum vibration parameters and drilling parameters can be seeked at the different stages of the drilling process by proposed simulation model.
事实上，铣削允许的切削速度和进给比车削或钻削高三到四倍。
In fact, the permissible cutting speeds and feeds for milling are three to four times higher than those for turning or drilling.
集中论述了在实际微孔钻削加工过程中主切削刃对微钻头折断和微孔加工精度的影响。
This article focused on drilling in the actual processing of microporous main cutting edge of micro-drill breaks and microporous processing accuracy.
根据振动钻削所具有的变速切削特性，提出了振动钻削的变速减振新概念。
According to the property of cutting with fluctuation speed in vibration drilling, a new concept of vibration reduction by cutting with fluctuation speed in vibration drilling is presented.
特点：FPC加工专用钻头，切削锋利，能有效抑制毛刺和钻污的产生。
Features: With sharp cutting teeth for preventing burr and smear generation. Suitable for machining FPC and PTFE.
基于振动钻削的基本原理，对轴向振动钻削的运动学特性和钻尖切削状况进行了分析。
Based on the basic principle of vibration drilling, its kinematics characteristics was analyzed and the cutting conditions of twist drill were studied.
探讨了获得钻削碳纤维复合材料高质量孔的两个关键因素：保持钻头切削刃的良好锋利性和采用高的钻削速度。
Two key factors for drilling high quality holes of carbon fibre reinforced plastics, which are to keep the fine sharpness of the cutting lip of the drill and to use high drilling speed are discussed.
深孔钻有两种类型，即用于钻盲孔的中心切削深孔钻和套孔钻。
There are two kinds of gun drills, namely, the center-cut gun drill used for drilling blind holes and the trepanning drill.
实验表明，这种麻花钻的轴向力较普通麻花钻降低40%左右，扭矩降低20%左右，是一种切削力小、能耗低的麻花钻。
Experimental results show that the thrust of such a drill is decreased by about 40% as compared with that of a standard drill and the torque by about 20%.
实验表明，这种麻花钻的轴向力较普通麻花钻降低40%左右，扭矩降低20%左右，是一种切削力小、能耗低的麻花钻。
Experimental results show that the thrust of such a drill is decreased by about 40% as compared with that of a standard drill and the torque by about 20%.
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