Abstract:
An aero engine rotor air floatation assembling method and device based on a gantry structure belong to mechanical assembling technology. The present invention can effectively solve the problem of poor coaxality after the aero engine rotor is assembled and has the characteristics of high coaxality after the rotor is assembled, reduced vibration, mounting easiness, high flexibility and improved engine performance. The measuring method and device are: determining rotary reference based on a rotary air bearing; determining the angular positioning of a rotary table according to a grating ruler; extracting the radial error of the radial mounting plane and the inclination error of the axial mounting plane of the rotor based on the four-probe measuring device to obtain the influencing weight of this rotor to the assembled rotor on coaxality; measuring respectively all the rotors required for assembling to obtain the influencing weight of each rotor to the assembled rotor on coaxality; vector optimizing the weight of each rotor to obtain the assembling angle of each rotor.
Abstract:
A magnetically suspended vibration isolator with zero stiffness whose angle degree of freedom is decoupled with a joint ball bearing has a main body, in which a sleeve and a lower mounting plate are supported with a magnetically suspended thrust bearing, a piston cylinder and the sleeve are lubricated and supported with a cylinder air bearing surface, and the angle degree of freedom between a upper mounting plate and the lower mounting plate is decoupled with a joint ball bearing; a position close-loop control system comprising voice coil motors, displacement sensors, limit switches, a controller and a driver is introduced, and the relative position between the upper mounting plate and the lower mounting plate is precisely controlled.
Abstract:
A vibration isolator with zero stiffness whose angle degree of freedom is decoupled with a spherical air bearing has a main body, in which a sleeve and a lower mounting plate, a piston cylinder and the sleeve are both lubricated and supported with air bearing surfaces respectively, and the angle degree of freedom between a upper mounting plate and the lower mounting plate is decoupled with a spherical air bearing; a position close-loop control system comprising voice coil motors, displacement sensors, limit switches, a controller and a driver is introduced, and the relative position between the upper mounting plate and the lower mounting plate is precisely controlled.