As a large composite curved surface component, the wind turbine blade is easy to suffer from grinding burn if the grinding parameters are improperly selected during the robot grinding process, which will seriously affect the surface grinding quality. In order to effectively predict the surface grinding temperature of robot grinding wind turbine blade, the curved surface grinding heat source model was established according to the material removal depth of any grinding point in the grinding contact area, and the temperature field under different grinding process parameters was numerically simulated using finite element method. The comparison between simulation and experiment indicates that the temperature on both sides of grinding contact area is higher than the middle temperature, and the maximum grinding temperature value appears on the cut-out side of the cup wheel. The maximum grinding temperature increases as increasing the wheel speed, feed rate and maximum grinding depth, feed rate is the biggest influence factor on the grinding temperature. The maximum grinding temperature of finite element simulation is in good agreement with the experimental results and the maximum relative error is <6%. The research results reveal the variation law between the curved surface grinding parameters and grinding temperature of curved surface grinding, which provides reference and basis for the prediction of grinding temperature of the wind turbine blade ground by robot.

中文翻译：

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风电叶片机器人磨削磨削温度变化研究

风电叶片作为大型复合曲面构件，在机器人打磨过程中，如果打磨参数选择不当，极易发生打磨烧伤，严重影响表面打磨质量。为有效预测机器人磨削风电叶片表面磨削温度，根据磨削接触区任意磨削点的材料去除深度，以及不同磨削工艺参数下的温度场，建立曲面磨削热源模型采用有限元方法进行数值模拟。仿真与实验对比表明，磨削接触区两侧温度高于中间温度，最高磨削温度值出现在杯形砂轮的切割侧。最高磨削温度随着砂轮转速、进给量和最大磨削深度的增加而升高，进给量是影响磨削温度的最大因素。有限元模拟的最高磨削温度与实验结果吻合较好，最大相对误差<6%。研究结果揭示了曲面磨削参数与曲面磨削磨削温度的变化规律，为机器人磨削风电叶片磨削温度的预测提供参考和依据。进给速度是影响研磨温度的最大因素。有限元模拟的最高磨削温度与实验结果吻合较好，最大相对误差<6%。研究结果揭示了曲面磨削参数与曲面磨削磨削温度的变化规律，为机器人磨削风电叶片磨削温度的预测提供参考和依据。进给速度是影响研磨温度的最大因素。有限元模拟的最高磨削温度与实验结果吻合较好，最大相对误差<6%。研究结果揭示了曲面磨削参数与曲面磨削磨削温度的变化规律，为机器人磨削风电叶片磨削温度的预测提供参考和依据。