汽轮机叶片数控砂带磨床可控磨削力磨头结构设计

Design the structure of controllable grinding wheel head for turbine blade NC belt grinding machine

研究了汽轮机叶片复杂曲面型面砂带磨削的要求,建立了六轴联动的砂带磨削运动关系模型;根据砂带磨削的特点,提出了通过控制磨削压力实现对磨削深度的控制解决柔性砂带磨削精度难以控制的难题;设计出可控磨削力的砂带磨头。用Pro-Mechanism对磨头结构进行了运动学仿真,用ANSYS对磨头支架进行了力学分析。试验验证,设计的砂带磨头满足使用要求。

Study on the requirements of abrasive belt grinding complex curved surface of turbine blade,a six-axis linkage movement of abrasive belt grinding relational model is established.Based on the characteristics of abrasive belt grinding,controlling grinding pressure in order to control flexible abrasive belt grinding depth,the difficult problem of grinding accuracy is solved.Abrasive belt grinding head of controlled grinding force has been designed.Kinematics simulation of grinding head by Pro-Mechanism and mechanical analysis to grinding head bracket using ANSYS are made.Verified by practical for turbine blade grinding tests,design of abrasive belt grinding meets the application requirements.