Multi-shaft automatic bolt screwing device

The utility model discloses a multi-shaft automatic bolt screwing device which is compact in structure. Included is a mounting base, a positioning clamp is fixedly arranged on the mounting base; a compressor to be machined is clamped on the positioning clamp; a mounting frame is vertically arranged on one side of the positioning clamp on the mounting base; a linear guide rail is fixedly arranged on one side of the mounting frame close to the positioning clamp; a vertical propelling mechanism is arranged at the top of the mounting frame; the bottom end of the vertical propelling mechanism is fixedly connected with a working frame; one side of the working frame is movably connected with the linear guide rail; a group of torque motors for providing power are vertically arranged at the top endof the working frame; a working disc is fixedly arranged at the bottom end in the working frame; at least two driving shafts are arranged in the working disc and connected with the output end of theservo motor through a tran