There are many causes inducing rock bit cone break, in which the effect of its machining on the cone is more serious.
造成钻头牙轮破裂的原因是多方面的，其中钻头机加工对牙轮开裂的影响较大。
The designers will be able to adjust the space position of the nozzle-axes on the bit cone according to the calculated result.
设计人员可根据计算结果来调整和确定喷咀轴线的空间位置。
So what if we somehow flatten our cone, push it a bit up so that it becomes completely flat?
但是什么都不会变，所以，如果我们把圆锥压扁？
Small diameter cone bit positioning deflection by wire-line coring with steel ball supporting was used to solve the problem economically.
采用绳索取心钢球支撑小径锥面钻头定位偏斜技术对事故进行处理，经济有效。
In this paper, a mathematic relationship between space position of gage surface and bit size, and other design parameters is derived on the basis of geometry of cone bit.
本文从新的几何关系出发，推导了牙轮背锥规径圆空间位置与钻头直径及其它设计参数的数学关系。
Drilling with cone( drag) bit in the section.
此段地层采用牙轮（刀）头钻进。
But now the use of the spherical one-cone bit shows that the teeth are abrade heavily in advance, which affects the velocity and life of the bit.
但是目前油田上使用的球形单牙轮钻头由于牙齿先期磨损严重，影响了钻头的机械钻速和寿命。
The formation of the bottom hole rock-disintegrating track of the mono-cone bit with wedge teeth was studied, and simulation software for the track pattern was developed.
在此基础上以楔形齿为对象研究了偏心单牙轮钻头井底破岩轨迹的形成，并编制了井底轨迹图仿真软件以模拟牙齿的凿岩轨迹。
The experiential ratio of optimum combination of three nozzles on tri cone bit is obtained based on many field experiments.
通过大量的现场试验，得出三牙轮钻头三喷嘴优化组合的经验比值。
In this paper, the situation and data in the test on testing table are presented, which are compared with those of three cone bit, obtaining an important result in applying this kind of bit.
文中介绍了在试验台上的试验情况和数据，并与三牙轮钻头进行了比较，得出了应用该钻头的重要结论。
There are many factors influencing the bit diameter and the tooth row intermesh due to the complicated shapes of the main parts of a three cone bit.
三牙轮钻头主要零件形状复杂，影响钻头直径及牙轮齿圈啮合误差的因素较多。
Compared the number of cone bit bearing capacity and concluded: diamond wheel bearing life is far greater than the cone drill bit bearings.
对比了牙轮钻头的轴承能力数，得出结论：轮式金刚石钻头轴承寿命远远大于牙轮钻头轴承。
As a result it is necessary to design new type of one-cone bit according to the quality of the rock.
因此应针对不同性质的岩石设计符合其破岩特点的单牙轮钻头。
A method of determining the load on journal bearing of three-cone bit is described in this paper.
本文阐述了三牙轮钻头滑动轴承载荷的测试方法。
Hose bit can be divided into cutter teeth and cone teeth, cone teeth for weathering of soft rock strata, and permafrost, cutter teeth used for drilling hard bedrock.
筒式钻头的切削具可分为截齿和牙轮，截齿筒状钻头用于风化软岩及永冻土地层钻进，牙轮筒式钻头用于硬质基岩钻进。
We can also carry out the analysis and calculation on the O-ring seal, which is used in the cone bit as well.
另外，对于应用于牙轮钻的O型密封圈进行了分析和计算。
The recent development trend of cone bits is to realize their high speed. Faster the speed of bit is, the more weak of common bearing seals worked under the rough environment is.
牙轮钻头目前的发展趋势是实现高速化，随着钻头转速的不断提高，在恶劣环境下工作的普通轴承密封这一环节的薄弱性将显得越来越突出。
To resolve the above problems we have designed a singular one-cone bit. We analyzed the bit to understand the mechanism, the result of breaking the rock, the characters of the fluid field.
针对以上问题设计了一种复锥面异形牙轮单牙轮钻头，为了研究设计的钻头结构是否合理、钻头的井底破岩效果、钻头的井底流场特性等问题，对试验钻头进行了一系列的分析。
The structure of tri-cone rock bit is complicated. As the cutting structure touch the stratum directly, it affects the process of breaking rock and the performance of tri-cone rock bit.
三牙轮钻头结构复杂，其中齿面结构直接与地层接触，对于岩石破碎过程和钻头工作性能的影响最大。
Our company can supply: Diamond bit series, bi-center bit series, coring bit series, steel cone bit series, insert bit series, etc.
我公司可提供：金刚石钻头系列、双心钻头系列、取芯钻头、钢齿牙轮钻头系列、镶齿牙轮钻头系列等。
It is a new technical innovation which the basic movement principles of the cone bit combine with the super wear-resistant diamond cutter.
它是将牙轮钻头切削齿交替工作的基本运动原理与金刚石钻头的超强耐磨切削齿技术相结合的一项技术创新。
On the system dynamics, the dynamics model for roller cone bit under the interaction of drilling string and rock was established.
从系统动力学的角度出发，建立了基于钻柱、岩石相互作用下的牙轮钻头动力学模型。
Based on the geometry and kinematics of cone bit, and designed in FORTRAN77. The software make some reasonable borrowings from AUTOCAD software so as to meet the needs of designing and drawing.
该套软件以牙轮钻头几何学、运动学为理论基础，合理利用AUTOCAD绘图软件包功能，按照牙轮钻头设计及制图要求，采用FORTRAN 77语言设计编制程序并制成成套软件。
On the basis of many experiments, the mechanics model for the interaction of roller cone bit and rock was established.
在大量单元实验的基础上，建立了牙轮钻头与岩石相互作用力学模型。
In the present SWD survey, roller-cone bit is widely used because of its advantages in signals recording and processing.
由于牙轮钻头在信号采集、处理等方面的优势，现阶段随钻地震测量主要采用的是牙轮钻头。
The dynamics of roller cone bit under the interaction of drilling string, bit and rock during the drilling process was investigated.
研究了钻井过程中钻柱、钻头、岩石相互作用下的牙轮钻头动力学特性。
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 main failure patterns of the sliding bearing of a cone bit are gluing and abrasion.
钻头滑动轴承的主要失效形式是胶合和磨粒磨损。
The drill bit in a cone shape outside has an outer diameter larger than or equal to the drill barrel to form an outer bulge.
钻头外侧呈锥体形状，钻头外径大于或等于钻筒外径形成外凸。
Assemble inserts and cones respectively, and prepare for calculating 3d engaging distance of tri-cone rock bit.
对牙轮和牙齿分别进行了装配，为三维啮合间隙计算做了充分准备。
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