气动凿岩机活塞在冲程时作直线运动,回程时沿螺旋棒的螺旋线运动(对于内回转凿岩机),并带动转动套、钎尾套、钎子一起转动,如图1所示。运动系统中,转动套、钎尾套、钎子只有绕轴线的转动,而活塞则作螺旋运动,这一螺旋运动可分解为沿轴线的直线运动和绕自身轴线的旋转运动。 Pneumatic rock drill piston for a straight line during the stroke, helix along the helix on the return stroke (for the inner rotary rock drill), and lead the rotating sleeve, drill sleeve, brazing child together, as shown in Figure 1. In the motion system, the rotating sleeve, the brazing sleeve and the brazing rod only rotate around the axis while the piston makes the helical motion. The helical motion can be decomposed into the linear motion along the axis and the rotational motion about its own axis.