Method and device for assembling magnetic suspension type aero-engine rotors based on concentricity optimization

The invention belongs to the technology of machine assembling, and discloses a method and device for assembling magnetic suspension type aero-engine rotors based on concentricity optimization. According to the measuring method and device, a rotation benchmark is determined based on a magnetic suspension rotation shafting, the angle location of a rotary table is determined through an optical-electricity encoder, the radial error of radial assembling planes of the rotors and the inclined error of axial assembling planes of the rotors are extracted through a four-measuring-head measuring device to obtain the influence weights of rotors to the coaxiality of the corresponding assembled rotors, all rotors needed by assembling are respectively measured to obtain the influence weights of the rotors to the coaxiality of the corresponding assembled rotors, and the vector optimization is carried out on the weights of all the rotors to obtain the assembling angles of all the rotors. The method and device can effectively solve the problem that the coaxiality is low after the aero-engine rotors are assembled, and have the advantages that the coaxiality of the rotors is high after the rotors are assembled, vibration is reduced, installation is easy, flexibility is high, and the performance of an engine is improved.