Research On The Platform Configuration Of Aero-engine Rotor Flexible Assembly System

Based on the traditional assembly methods in aero-engine assembly which special tooling quantity and difficulty to meet the modern engine high precision and high efficiency requirements, this thesis proposed the automatic assembly of aero-engine rotor flexible assembly system platform. Completed the study of assembly system platform design, selection, precision analysis, static analysis, kinematics modeling, positive and negative solution verification, etc. The system platform has significant to solve the problem of aero-engine traditional assembly long cycle long and low assembly quality.First, according to the structure characteristics of aero-engine rotor, assembly process and assembly commonality of engine rotor parts, combined with the design concept of automated assembly and tooling module, this paper designed a set of suitable for different types, similarly type structure of flexible assembly system platform, analyzed the assembly system platform of stalk transport platform, structure feature of disc positioning device and working principle. In addition, typical positioning component in assembly system, worm and gear design and working principle are analyzed as an emphasized portion. Through the analysis, this assembly system platform can realize the digital assembly on engine rotor structure.Second, this paper based on the research of the platform of flexible assembly system of aero-engine rotor, this paper carried out a kinematical analysis on the positioning of the disc position device, deduced the inverse and forward kinematics formula, conducted the forward kinematics simulation and inverse kinematics verification. Based on the shaft convey device of the X,Y,Z module independent working principle,this paper established error model, analyzed the influencing factors on accuracy of axis conveying device, and aimed at the precision requirement analysis the method how to guarantee the assembly system precision.At the same time, in this thesis, mainly bearing parts and typical positioning parts in disc positioning device of assembly system can be used to perform the strength analysis to the utilization ANSYS Workbench software at different working conditions assembly position. At the same time, strength analysis was carried out on the typical parts of column, shaft positioning, worm and gear in the shaft transmission platform. From the perspective of statics to verify the feasibility of assembly system.Last, in this paper, the kinematics analysis was carried out on the positioning mechanism of disc locating device, established kinematics positive and negative solution of the mathematical model, verified the validity of the kinematic scheme. At the same time, the simulation analysis was carried out on the disc positioning device. Though the analysis, obtained the driving slide block of positioning arm and the positioning platform center actual trajectory, guided the plate positioning device assembly work.This paper designed the Aero-engine flexible assembly system platform, which has certain innovation in the field of Aero-engine rotor manufacturing digital assemble.