Multi-drill-bit integrated machining device for air cylinder machining

The utility model relates to the technical field of air cylinder machining equipment. The utility model discloses a multi-drill-bit integrated machining device for air cylinder machining. The drillingdevice comprises a workbench, a containing table and a first drilling mechanism used for drilling the air cylinder cover. A first motor is mounted in the worktable; an output shaft of the first motoris connected with a first bevel gear; half of the first bevel gear is provided with teeth; the half toothless first bevel gear is engaged with two second bevel gears, the two second bevel gears are jointly connected with a screw rod, the thread directions of the two ends of the screw rod are opposite, the two ends of the screw rod are in threaded connection with supporting seats correspondingly,and the first drilling mechanisms are fixedly installed on the supporting seats and are opposite to the two side faces of the air cylinder cover correspondingly. By means of mutual transmission fit ofthe first motor, the first