During drilling operation, the rock drill generates rotational torque. The spline, through its toothed surface, tightly meshes with the drill's transmission components, ensuring a smooth and efficient transmission of this torque. This prevents slippage and free spin of the drill bit under high-frequency impact, guaranteeing uniform drilling force and consistent drilling direction.
Simultaneously, the spline provides precise limiting and guiding positioning, fixing the drill bit's trajectory and preventing radial movement or misalignment during reciprocating impacts and rotation. This allows impact energy to be stably transmitted along the drill rod, reducing abnormal wear between components. This extends the lifespan of the drill bit itself and protects the rock drill, drill rod, and other supporting equipment, enhancing the overall stability and safety of the operation.
