In rock drilling process with percussion-rotary drill rotating drilling tool bears two toques: dynamic torque which drives drilling tool into rock mass, and resistance torque of rock mass.
前言:在沖击—回转式凿巖机向巖石鉆进过程中,旋转中的鉆具承受着两种力矩的作用:一是驱动其旋转的动力矩;二是被鉆巖石阻止其旋转的阻力矩。