Design And Grinding Characteristics Of Grinding Device For Glass Fiber Laminated Surface Of Wind Turbine Blade

As an important component of wind turbines,wind turbine blades directly affect the operational reliability of wind power equipment.Leaf roots are the most important part of the blade,and the quality of the blades determines the service life of the blades to a large extent.The processing condition of the blade root surface is an important factor affecting the quality of leaf root production.In order to solve the problem that it is difficult to realize the automatic processing of the root surface of wind turbine blades at present,this paper proposes a design scheme for the grinding device of the wind turbine blade root clamping surface,and at the same time,in order to better meet the actual working conditions,the lightweight design of the design structure In order to achieve the double-sided surface machining of the blade root;further,in order to achieve the best grinding effect,the grinding characteristics of the diamond wheel used were studied.The specific research results are as follows:Firstly,according to the technical requirements of the double-sided surface grinding of wind blade roots,the principle of profiling is used to design the grinding system of the bilateral surface grinding of wind turbine blades,and then the design of the chassis bearing frame structure and its hydraulic and electrical control system is designed.The 3D modeling software UG is used to analyze the solid system of the wind turbine blade root clamping surface grinding device.Secondly,according to the design and solid modeling of the chassis structure of the wind turbine blade root clamping surface,the static analysis and modal analysis of the bearing frame structure are carried out by ANSYS Workbench software.Then the modal superposition theory is used to optimize the structure of the chassis load-bearing frame.The light weight is taken as the objective function,and the limit size of the load-bearing structure is used as the constraint condition.The iterative method is used to find the optimal solution of the structural parameters.The thickness of the chassis carrying intermediate beam ?1 and the thickness of the beam support ?2 are reduced to 10 mm and 5mm respectively.The above theoretical analysis is carried out in the field test.The load structure quality is reduced by 48 kg,the first-order frequency is increased to above 10 Hz,and the amplitude is reduced by 1.44 mm.The deformation is increased by 0.4mm,but the total deformation of the bearing structure is less than 2mm.The feasibility of the modal superposition theory for structural optimization is verified,which provides theoretical support for the subsequent engineering application of the windmill blade root clamping surface grinding.Finally,the finite element simulation analysis of the single-grain diamond grinding wheel is carried out,and the friction and wear test is carried out on the MMW-1 vertical universal friction and wear testing machine.Combined with the orthogonal experimental analysis method,under the variation of cutting force,When the grinding wheel speed is 3000r/min and the feed degree is 1m/min,the best grinding effect is obtained.Using the glass fiber surface-molding surface grinding device designed in this paper,the friction and wear test of the ceramic bond diamond grinding wheel is carried out in units.Based on the amount of wear in time,the parameters of the ceramic bond diamond grinding wheel are analyzed and analyzed.It can be seen from the experimental data analysis that when the cubic diamond abrasive wheel is used,the size of the abrasive grain is controlled to be 450~500?m,and the concentration is 60%~ At 80%,the wear of the grinding wheel per unit time is significantly reduced.It is verified that the diamond grinding wheel with reasonable parameters grinds the glass fiber grinding surface of the wind turbine blade with better grinding service life.The simulation analysis of the grinding process and grinding parameters of the diamond grinding wheel not only can reduce the production cost of the root parting surface processing,but also provide an experimental reference for the subsequent grinding of the hard and brittle materials such as glass fiber by the diamond grinding wheel.