Error Modeling For Aero Engine Blade Repair Welding Machine

Aero engine blade welding machine plays a very important role in extending the life of aero-engine blades and reducing the operating costs of aviation equipment. One research focus of this project is to improve the precision of the automatic welding machine. This article analyzed and studied from the static and dynamic errors.The error caused by the factor of stiffness is filtered and measured by software, meanwhile consider the changes in the process. Then mathematical model of this static error is established by Multi-body system. The error of theoretical and the actual are compared to validate that this model is feasible. Provide a new reference direction for modeling of static error for the machine.In order to establish a model of aircraft engine blade repair welding machine which reflect the real motion for more, then improve the dynamic stability of the machine. Analyze multivariate factors of dynamics for axis motion of aircraft engine blade repair welding machine according to kinetic theory. Considers the motor, bearings, screw, screw vice and workbench, associate the axial displacement with axial force and torque through the dynamic stiffness, then model and simulate. Compare the simulation results with the results got after modifying parameters and compare with the results got using other model. Dynamic stability and sensitivity of the model are verified as more excellent form these comparisons. This paper provides a reference direction for precision control for the machine.