牙轮钻头牙齿与井底接触角的确定  

DETERMINATION OF THE CONTACT ANGLES OF BIT TOOTH AND BOTTOM_HOLE

作　　者：李树盛[1] 蔡镜仑[1] 崔立山[1] 

机构地区：[1]石油大学油田新材料工程研究中心

出　　处：《石油大学学报（自然科学版）》1997年第3期33-35,39,共4页Journal of the University of Petroleum,China(Edition of Natural Science)

摘　　要：根据牙轮钻头几何学和运动学原理，分析了钻头齿在井底的运动轨迹和井底轮廓线，提出了确定钻头牙齿与井底接触过程起止点的方法，并运用ＡｕｔｏＣＡＤ绘图软件包建立了确定牙齿与井底接触角的计算机图解法，给出了牙轮钻头设计中的一个应用实例．Based on geometry and kinematics of rock bit, this paper proposes a new method to determine the start and the end of contact process of bit tooth and bottom_hole through the analyses of tooth trajectory and bottom_hole outline. The computer graphic method for determining the contact angles of bit tooth and bottom_hole with AutoCAD softwares is developed. The method is successfully used to solves an important problem of working theory for rock bit.

关 键 词：牙轮钻头 钻头牙齿 接触角 设计 石油 

分 类 号：TE921.102[石油与天然气工程—石油机械设备]