强化研磨中喷头的改进及优化设计

Improvement and Optimization Design of Nozzle in Strengthening Grinding

在强化研磨过程中,为了能对轴承内沟道进行喷射处理,将喷头出口处设计为弯型,同时为使研磨料经过弯型喷头时能量损失最小,需设计合理的弯道半径及弯管角度。运用Pro/E建立15种不同弯道半径及弯管角度情况下的CAD模型,然后导入ANSYS数值模拟分析相同初始条件下各个喷头PROE模型的内部流场压力云图。结果表明:最优值即弯角θ=20°,弯管的曲率半径R=30 mm时能量损失最小。

In the process of strengthening the grinding, in order to to spray the bearing inner channel, the nozzle exit was de- signed for bending. To minimize the energy loss at bending when grinding material passed, design of the bend radius and bend angle of bending nozzle reasonablely was needed. Pro/E was used to establish 15 kinds of different bend radius and bend angle of computer ai- ded design （CAD） model, and then the ANSYS numerical simulation was introduced to analyze the inner flow field pressure cloud ima- ges of these nozzles under the same initial conditions. It is concluded that the energy loss is the smallest when the optimal value is bend angle θ=20°, and bend radius of curvature R = 30 mm.