当钻头上下钻时，要把钻孔保持在中心。
Keep the drill centred in the borehole while it ascends and descends.
然后，钻孔机钻头压断了我的后背，我痛的几乎麻木了。
Then I felt the numbing pain of the auger bit crushing my back.
钻孔是用一个称为“钻头”的旋转刀具进行的。
钻孔：指在钻床或铣床上使用钻头对工件进行打孔的工艺过程。
Drilling: refers to the use of drilling or milling machine drill hole of the workpiece process.
单通道钻孔装置，整个钻头的使用，用于单通道岩石锚固的方法和岩石锚栓。
Single pass drilling apparatus, use a one-piece drill bit, method and rock bolt for single pass rock bolting.
大多数金属钻孔用的是麻花钻头。
后者在其中心有一圆柱形沟槽，这样能生成整体芯在钻孔作业过程中引导钻头。
The latter has a cylindrical groove at its center, thus generating a solid core, which guides the tool as it proceeds during the drilling operation.
烧结直柄钻头：适用于玻璃、陶瓷、宝石等硬脆材料的钻孔。
Sinter type straight-handle drills: Use for drilling hard and brickle material, such as glass, ceramics, jewellery etc.
烧结锥柄钻头：适用于玻璃、陶瓷等硬性材料的钻孔。
Sinter type fastigiate-handle drills: Use for drilling hard and brickle material, such as glass, ceramics etc.
简要介绍数控钻孔加工过程中，钻头的受力情况和对应钻孔程序的编制技巧。
This article briefly introduces the drill bit condition effected during drilling process and the program - Ming technique to drilling data.
它基本上由在淬硬钢衬套下将零件夹持到位的夹持装置组成，钻孔作业中钻头穿过这些衬套，通过它们来导向。
Basically it consists of a clamping device to hold the part in position under hardened-steel bushings through which the drill passes during the drilling operation. The drill is guided by the bushings.
钻头必须缓慢转动，以保证钻孔平整光滑。
这个钻头的位置和大小的文件描述每个钻孔。
The drill file describes the location and size of each drilled hole.
传统上采用钻孔方法加工小孔径深孔时，存在排屑困难、钻头易折断等缺陷。
When traditionally processing the parts with small deeper hole by the method of drill, there is certain difficulty in excluding bits and the bit is broken easily.
烧结锥柄钻头：适用于玻璃、陶瓷等硬性材料的钻孔。
Sinter type fastigiate-handle drills: Use for drilling hard and brickle material, such as glass, ceramics etc...
一种能够在纤维增强复合材料中钻孔的金刚石涂敷的钻头。
A diamond coated drill capable of drilling holes in fiber reinforced composite materials.
钻孔是用一个称为“钻头”的旋转刀具实行的。
锥钻，打眼钉钻头倾斜的钻子，用于在木头上钻孔以钉角钉或螺钉。
An awl with a beveled tip, used to make holes in wood for brads or screws.
钻头转速可调，钻孔效率高，孔位准确，适用于建筑玻璃与家具玻璃的加工。
The drilling head rotational speed can adjust, the drill hole efficiency is very high, the hole position is accurate, and it is suitable for the construction glass and the furniture glass processing.
通过对在钢筋混疑土、花岗岩等建筑物上钻孔特点的分析，本文设计了一种新型的取芯式薄壁金钢石钻头。
A new type of thin-wall diamond core drill bit is developed through the analysis of drilling feature on the r.
手动钻孔的钻头转速慢，无温升，可以避免烧糊人体组织的情况发生。
The drill head for manually drilling has slow rotary speed and does not have temperature increase so that the occurrence of condition such as body tissues burn is avoided.
石材钻头：适用于石材、混凝土、耐火材料的钻孔。各种型号及规格。
Stones drilling bit: Use for drilling stones, concrete, firebrick etc. Various type and specification.
夹头上有转速传感器，钻孔中，卡钻头时可退出钻头。
On the chuck there is a speed sensor. In drilling when the bit is blocked the bit can be retreated.
钻头上的控制钻孔机的圆形部分。
这样就避免了硬质合金钻头在接触钻孔表面时受撞击而损毁刀锋。
This avoids the carbide drill bits from breaking off the blades at impact.
整体钻头：适用于玻璃、陶瓷等硬脆材料的钻孔。直径由4- 200毫米。
Diamond unitary drills: Use for drilling hard and brickle material, such as glass, ceramics etc. Dia 4-200mm.
使用时，将钻头放入钻孔的位置，左旋转即可钻出左旋丝纹的钻孔。
When used, the drill bit is put into a drill hole, and then rotated left to drill out the drill hole with left-hand threads.
在设备研制成功的基础上，对钻孔机钻头不同钻尖、不同切土刀刃角进行了实地试验研究和分析。
Based on the machine development, a research and analyses of auger drill bits with different kinds of drill tips and soil cut blade angles were carried out in tree planting field.
其中，当所述钻头被锁定到所述可调深度限位件上时，所述外壳近端处于距所述可调深度限位件远端的第一轴向距离的位置，所述第一轴向距离与进入所述骨头部分的最大钻孔深度成正比。
The adjustable stop has a drill bit engaging mechanism to selectively lock the adjustable stop the drill bit at a desired location to limit the dept that the drill may penetrate into the bone.
锚杆钻孔所遇岩层种类较多，合理地选择锚杆钻头类型有利于提高综合效益。
There are many kinds of strata in roof bolt hole. Proper using and choosing are available for increasing comprehensive benefit.
应用推荐