Integrated crank drilling mechanism

The utility model relates to the technical field of one-piece crank machining, in particular to a one-piece crank drilling mechanism which comprises a base, a clamping mechanism, a moving seat, a moving assembly and a limiting baffle. A working box is arranged on the base, two supporting tables are arranged on the base in the working box, and the upper ends of the two supporting tables are used for supporting two crank arms of the one-piece crank respectively; the clamping mechanism is arranged on the base in the working box and is used for clamping a middle shaft of the one-piece crank; the two moving seats are located in the positions, on the outer sides of the two supporting tables, of the working box correspondingly, each moving seat is provided with a drilling motor, and the output end of each drilling motor is provided with a drill bit. The moving assembly is arranged on the working box, connected with the two moving seats and used for driving the two moving seats to get close to each other or get away