Research On Efficient And Intelligent Processing Methods For Wind Turbine Blade Surface

In recent years,the global wind power industry has been developing rapidly,and the demand for large wind turbine blades is strong.Grinding treatment should be performed immediately after the blade surface in order to improve coating adhesion and thus achieve the goal of extending blade life and stability.At present,most of the blade production industry still uses a manual,hand-held grinding machine way of operation,resulting in low efficiency and surface quality of wind turbine blade grinding.It is therefore difficult to meet the enterprise’s needs for efficient and intelligent blade processing.To address the above problems,this paper develops a new type of multi-powered head end grinding device based on the requirements of large blade processing,explores the tool path and process parameter optimization in the robotic arm+multi powered head grinding method with the goal of efficient processing,gives an efficient and intelligent processing process plan,and conducts processing simulation to verify.The main research contents and results of this paper are as follows:(1)The blade airfoil geometry parameters are introduced,and the machining requirements are clarified based on the Bezier theory and the Bezier simplification theory,combined with the specific parameters of the blade.The blade surface equations are analyzed using the Cartesian coordinate system,and the key parameters such as surface quality distribution,grinding depth,and grinding width are clarified for the actual working conditions of the blade.(2)The design requirements and design method of the end grinding device were analyzed,and the 3D modeling of the multi-power head end grinding device was carried out using Solid Works drawing software.The internal structure composition,movement mode,and key parameter settings of the device were also given.ANSYS Workbench simulation software is used to analyze the grinding device statically.Finally,the overall analysis of the wind turbine blade grinding solution is carried out from four aspects: grinding method,grinding mode,grinding trajectory,and grinding parameters,and the blade processing solution is determined.(3)Abaqus software was used to perform machining finite element simulation of carbon fiber reinforced polymer,and the preliminary range of grinding parameters was selected by analyzing the mechanical machining properties of this material.High speed and small feed were used for simulation machining.The simulation simulated the effects on grinding force and grinding temperature under different process parameters such as grinding speed,feed rate,and grinding depth.The effect of grinding parameters on grinding force and grinding temperature was analyzed using the extreme difference method,and the optimal process parameters were determined.(4)Based on the optimal grinding parameters,the simulation results of the multi-powered head end grinding device and the conventional grinding machine were compared using Abaqus software,which showed that the grinding force and surface quality of the multi-powered head end grinding device were better than those of the conventional grinding machine.The actual grinding results of both were obtained through experiments and compared with the simulation results to verify the superiority of the multi-powered end grinding device in terms of process.The new multi-powered head end grinding device and the proposed robotic arm and multipowered head grinding process scheme developed in this paper provide feasible solutions to improve the quality and efficiency of large wind turbine blade surface processing and have a certain technical reference for efficient processing of complex surfaces.