Drilling device

The drilling device comprises a machine shell, a first motor, a guide plate, a main shaft and at least two drilling units, and an opening is formed in the bottom end of the machine shell; the first motor is arranged at the top end of the machine shell. The guide plate is arranged in the machine shell; one end of the main shaft is rotationally connected with the first motor, and the other end of the main shaft penetrates through the guide plate and is fixedly connected with a driving gear; the drilling unit is arranged on the guide plate in a lifting mode so that the drilling unit can stretch out and retract back in the opening, and a driven gear meshed with the driving gear is fixedly connected to the side wall of the drilling unit. According to the drilling machine, the at least two drilling units are arranged on the guide plate in a lifting mode, so that the drilling units stretch out and retract at the opening in the bottom end of the machine shell, synchronous machining of multiple holes in a plate at a t