Research On Platform Configuration Of Aeroengine Blade Automatic Assembly System

Based on the most of the traditional assembly of aero-engine blades adopts manual assembly and testing,resulting in the influence of human factors on assembly quality and accuracy,resulting in many problems such as low assembly efficiency.Based on the advantage of serial robot with simple structure,low cost,easy control and large space for movement,a set of blade automatic assembly system platform was designed.The static analysis and kinematics simulation of the system platform were completed.At the same time,the reliability of the system platform was verified.First of all,from the analysis of the aero-engine blade structure and the traditional assembly method,this paper creatively puts forward three elements of the blade automatic assembly system platform: automatic blade conveying device,mechanical arm fixture and roulette fixed platform.First proposed 4 + 2 DOF theory of constraints,and based on this theory,four sets of blade automatic assembly systems have been innovatively designed,and comprehensive analysis of them to select the optimal program.Take the lead in theoretically realizing the transformation of aero-engine blades from traditional assembly to digital assembly.Second,this article first designs two sets of roulette transfer mechanism program.A comprehensive analysis of its selection of the best program,and through the body of the blade assembly system platform and the flexible shaft docking system connected to form a set from the blade and the roulette assembly to the roulette and shaft assembly of a complete flexible assembly system.So far,no similar solution has emerged in the field of flexible assembly systems.At the same time,the finite element software is used to analyze the stiffness and strength of the main bearing components and typical positioning components in the assembly system from the perspective of statics,and then the feasibility of the designed automatic assembly system is verified.Finally,the kinematic model of mechanical arm is analyzed by D-H method,and the positive and inverse kinematics equations are obtained.Marking the end of the manipulator and using motion simulation to get the trajectory of the manipulator’s hand and the set of three-dimensional coordinate points(X,Y,Z)in frames,the obtained coordinate point set was imported into MATLAB to obtain,the obtained coordinate point set is imported into MATLAB to obtain the spatial distribution map of robotic gripper motion space and the x-o-yplane motion trajectory.Combined with the motion equation of the manipulator,the rationality of the parameters and the correctness of the kinematic solution were verified.Combined with the motion equations of the mechanical arm,the rationality of the parameters and the correctness of the kinematic solution were verified.It provides the basis for the research on optimization design and operation control of mechanical arm.This paper designs the aero-engine blade automatic assembly system platform,which has certain implications for the development of automated assembly of aero-engines.