The experiential ratio of optimum combination of three nozzles on triconebit 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。
2
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。
3
Assemble inserts and cones respectively, and prepare for calculating 3d engaging distance of tri-cone rock bit.