2results about How to "Avoid stuck drill" patented technology

The invention discloses a PDC drill bit with damping teeth. The drill bit comprises a drill bit body, a plurality of blades extending to the drill bit body and water holes formed in the drill bit body, and damping PDC modules are arranged on the blades; the damping PDC module is composed of damping PDC teeth, bushings, elastic elements and limiters, each damping PDC tooth comprises a polycrystalline diamond layer, a first supporting base body and a second supporting base body, and the axis of the first supporting base body and the axis of the second supporting base body are in an L shape; when the damping PDC teeth bear an overlarge axial load, the elastic element is compressed, and the scraping depth of the PDC teeth is reduced, and when the axial load is reduced, the elastic element is extended, and the scraping depth of the PDC teeth is increased. According to the drill bit, the scraping depth of the PDC teeth can be controlled, the characteristic that the PDC teeth are high in rock breaking efficiency in soft stratums is reserved, the phenomenon that the PDC teeth are clamped and slipped due to the fact that the PDC teeth drill too deep in stratums difficult to drill can be prevented, the rock breaking efficiency of the drill bit is improved, and the service life of the drill bit is prolonged.

This application provides an automated pneumatic drilling machine, including a frame with a base platform mounted on it; a first transverse platform for providing movement in a first horizontal direction; a second transverse platform for providing movement in a second horizontal direction, with the first and second horizontal directions perpendicular to each other; and a pneumatic drilling assembly including a cylinder and a pneumatic drill bit, the pneumatic drilling assembly moving perpendicular to the base platform and used to drill a workpiece placed on the second transverse platform. The start and stop of the first and second transverse platforms and the pneumatic drilling assembly are all controlled by a PLC control module. This application features overload protection and impact resistance. The pneumatic system itself is compressible; when the drill bit encounters a hard point and gets stuck, the pneumatic cylinder or the pneumatic drill bit can instantly absorb the impact energy through internal pressure relief or "slippage," avoiding rigid damage to the transmission mechanism. The equipment is safer, has a longer service life, and the pneumatic system has a simple structure and low maintenance cost.