单牙轮钻头井底展开轨迹图

鉴于用井底平面轨迹图不能直观反映球形单牙轮钻头牙齿的运动轨迹，从井底展开角度提出了应用井底展开轨迹图描绘球形单牙轮钻头牙齿在井底运动轨迹的新方法，使单牙轮钻头牙齿的运动轨迹完全展开在一平面上，从而能直现、清楚地看出球形单牙轮钻头牙齿对井底岩石的切削分布和切削均匀倩况。

Stretch out gragh of bottom hole track of mono-cone bits

In view of that the bottom hole plane graph cannot directly reveal the motiou track of the teeth of a spherical mono-cone bit,the stretch out graph is put forward as a new method to describe the motion track of the bit teeth,i.e. making the motion track of the bit teeth stretched out on a plane to observe directly directly and clearly the cutting condition of the bit teeth on the bottom hole rock.