used atlas copco rock drill machine
The rock drill works on the principle of impact crushing. When working, the piston makes high-frequency reciprocating motion, which constantly impacts the tail. Under the action of the impact force, the pointed wedge-shaped drill bit crushes the rock and cuts it into a certain depth to form a dent. After the piston is retracted, the drill rotates through a certain angle, the piston moves forward, and when it hits the tail again, a new dent is formed. The fan-shaped rock mass between the two dents was sheared by the horizontal component force generated on the drill bit. The piston continuously impacts the tail of the drill, and continuously inputs compressed air or pressure water from the center hole of the drill to discharge the slag out of the hole, forming a circular hole of a certain depth.