查询词典 tip of drill

The machine equipments needed has spiral drill press and drill to expand machine or diving drill press.

所需机械设备有螺旋钻孔机、钻扩机或潜水钻孔机。

In Fig.1,spindle A is supported by two identical isotropic bearings in radial direction;spindle A and drill clamp C–D is connected by shaft B;micro-drill E–F is fixed in the clamp D.Drill part with the screw slots is taken as uniform shaft F by equivalent of the bending stiffness.

In ，主轴A是帮助的两个相仿的各向同性轴承径向目标；主轴A和操演钳的C - D的贯串轴B组；微型钻电子F是牢固在钳4钻局部螺钉插槽是采用调和轴F很是卷曲stiffness。

In Fig.1,spindle A is supported by two identical isotropic bearings in radial direction;spindle A and drill clamp C D is connected by shaft B;micro-drill E F is fixed in the clamp D.Drill part with the screw slots is taken as uniform shaft F by equivalent of the bending stiffness.

In ，主轴A是支持的两个相同的各向同性轴承径向方向；主轴A和演习钳的C - D的连接轴B组；微型钻电子F是固定在钳4钻部分螺钉插槽是采取统一轴F相当弯曲stiffness。

Based on the theory study, a directional drilling guidance system is developed for practical require, its working flow as follows: before construction, design the best track practically, and save in the system. During drilling, the system measures well oblique angle and azimuth to watch well track. Drill driver compares designing well track with measuring track showing on display unit, controls joy stick experientially, adjusts drill direction, finally realizes directional drill.

在理论研究的基础上，结合实际需要，研究设计了一种定向钻井导航系统，使用该系统进行定向穿越施工的工作过程如下：在施工前，根据实际情况，先设计一条最佳穿越路线，存入系统；在钻进中，系统通过对井轨的井斜、方位等参数的测量，对其进行实时监测；地面的司钻手通过对显示仪所显示的实际井轨参数及设计井轨参数进行比较，根据经验操纵操作杆，调整钻机前进方向，以达到对钻进过程的控制，最终实现定向钻井。

Our company manufactures varieties of drill bits: Full Ground drills, polish drills, 1/2 shank drills, extension drill, wood working drill, asonry drills and so on.

公司自创建十余年来始终坚持&质量第一，用户至上&的宗旨，为广大国内外客商提供质量稳定可靠的产品。

Its most major and most complicated problems are the analysis of drill point mathematical models and drill grinding theory, which is the foundation of drill grinder design.

而各种先进钻型数学模型的建立及刃磨理论的研究是钻头自动化刃磨技术的研究的重点和难点，它是钻头刃磨机设计的理论基础。

It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.

此外，作者还分析了一台加工中心上的钻头刃磨装置，提出了一种两轴合成四平面钻尖的刃磨理论，并对其应用前景进行了初步探讨，为钻头刃磨方法和刃磨机的研制开辟了一条新的途径。

A third kelly cock is generally kept on the drill floor to be used in the drill string in the event flow up the drill string occurs while making a connection or tripping pipe.

第三个方钻杆旋塞通常保留在钻台上，当连接或起下钻时发生钻柱内向上流动的情况下用于钻柱。

Comparing the quality of the three methods of making hollow drill steel,"drill-hole and hot-rolled with core"method is best. The present paper indicates that the prolonging life mechanisms of the new drill rod include four aspects.

本文给出H22-40SiMnCrNiMoA锥体连接钎杆制造工艺，运用&钻孔-带芯热轧法&、&热穿-热拔法&、&热穿-热轧法&三种工艺加工的H22-40SiMnCrNiMoA试验钎杆中，&钻孔-带芯热轧法&各方面的质量都是最好。

DDX auto pinning machine is used to make reference positioning pin prior to drill the laminated plates of etched circuit card on drill machine to ensure that the numerical controlled drill machine for etched circuit card can manufacture premium puoducts.

DDX全自动钉销机用于印制电路叠层板在印制电路板数控钻孔前钻作基准定位销钉，从而保证印制电路板床能加工出高品质的产品。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。