The cutting part of a drill usually pointed and threaded and is replaceable in a brace or bitstock or.
钻机的切割部分；通常是尖头的有螺旋状图案并且可以更换用在柱柄或上。
Based on the basic principle of vibration drilling, its kinematics characteristics was analyzed and the cutting conditions of twist drill were studied.
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 cutting and vibrating theories, the dynamic behavior of micro drill is studied by using the finite element method.
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。
By means of drill grinding and selection of suitable cutting parameters, the serviceability of drill and surface quality of workpiece are improved.
通过对钻头进行修磨，选择适当的切削参数，可以提高钻头的耐用度和工件的表面质量。
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.
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。
An analysis related to various kinds of soil cutting by earth auger, this paper puts forward that running speed of frill should be faster than critical speed so as to increase the efficiency of drill.
通过分析长螺旋钻机在切削各类土质时，钻具的角速度与土块运动机理关系，提出确定钻具临界的方法，而工程施工中钻杆的实际转速应大于临界转速，以提高钻机的工作效率。
The main concrete cutting tools that are utilized include the wall saw, the flat saw, the core drill, and the wire saw.
混凝土切割工具，主要是利用包括看到墙上，单位锯核心钻、绳锯。
A fixture holds the work during machining operations but does not contain special arrangements for guiding the cutting tool, as drill jigs do.
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。
This article focused on drilling in the actual processing of microporous main cutting edge of micro-drill breaks and microporous processing accuracy.
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。
The box taps is a special external tool cutting thread and fishing externally from dropped object such as tubing, drill pipe.
母锥是一种专门从油管、钻杆等管状落物外壁进行造扣打捞的工具。
Excellent on Power Tools Co. , Ltd, founded in 2005, the company mainly produce cutting machine, grinder , electric drill, electric hammer and other tools.
上海颖优电动工具有限公司，成立于2005年，公司主要生产切割机，磨光机，电钻，电锤等电动工具。
This paper analyses that tip Angle of drill bit influences on cutting capability and life of twist drill, when the material and shape of work piece is different.
分析了工件材料、形状不同时，钻尖顶角的大小对麻花钻切削性能及寿命的影响，介绍了麻花钻的钻尖顶角的选择。
The model includes of important characteristics of drill bit and drilling operation, i. e. sectional geometrical property of drill, spiral Angle, speed and cutting force created during drilling.
该模型包括了钻头以及钻削操作的重要特性，即钻头的截面几何特征、螺旋角、转速和钻削过程中产生的切削力。
In this case, the cutting tool, thAT is, the drill, turns fast, but the workpiece doesn't move AT all.
在这种情况下，切削刀具即钻头快速转动，但工件却根本不动。
With the help of this optimization model, the optimized drill structure, which will generate minimum radial cutting force and torque, can be determined for different cutting conditions.
利用该优化模型对不同加工条件下的浅孔钻进行优化，得到使径向合力及扭矩为最小时的钻头结构参数。
V cutting is a continuous motion drill that develops players passing, shooting, and dribbling.
字切入技术是培养球员传球，投篮和运球的持续运动技术。
To reproduce or increase the size of a hole by use of a drill, auger or rotary cutting tool.
用钻头，螺钻或旋转切割机在加工或增大孔的大小。
The research results show that the average axial cutting force and torque of common drill-grinding are greater than that of ultrasonic drill-grinding.
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；
Usually there are three methods can be used to machine the spiral flute of twist drill, such as cutting, torsion, grinding.
通常普通麻花钻的螺旋槽加工有三种方式：切削加工、扭制加工和磨削加工。
Drilling is cutting a hole with a drill.
钻削就是用钻头钻一个孔。
Compares with drill emission hole, the use of cutting method to against coal and gas outburst prominent have characteristics of security, time and labour-saving, and easy to operate.
与排放钻孔相比，使用掏槽法防突具有省时、省力、容易操作以及安全性好等特点。
Diamond cone bit is a new drill bit which make use of cutting cutters interacting with rock slowly and alternately.
轮式金刚石钻头是利用切削齿缓慢交替切削运动来破碎岩石的新型钻头。
The new drill is much more powerful, capable of cutting through up to 30m of rock a day.
新的钻机强大得多，一天能够穿透30米的岩石。如果一切进展顺利，它可能第一个完成援救通道。
Hollow shaft type high pressure cooling system is used to solve the problem in deep drilling, as well as gun-drill with open groove, proper cutting consumption and single tool withdraw are applied.
笔者主要阐述了数控深孔钻床在使用枪钻进行深孔加工时工艺参数的选择，寻求最佳加工性能，以求达到快速加工、提高效率的目的。
Drill hole, Cutting, Stretch or punch (Range 3-5 mm).
钻孔，切割，拉伸或冲压(幅度3 - 5毫米)。
Drill hole, Cutting, Stretch or punch (Range 3-5 mm).
钻孔，切割，拉伸或冲压(幅度3 - 5毫米)。
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