磁力研磨法加工弯管内表面的工艺参数优化

利用磁力研磨法，使安装在六自由度机械手的磁力研磨装置带动弯管内部的磁粒刷沿弯管中心轴线往复运动，同时磁力研磨装置旋转，解决空间弯管内表面研磨加工的技术难题。选取了影响磁力研磨工艺抛光弯管内表面的主要工艺参数（磁极转速、加工间隙、磁性磨粒粒径、轴向进给速度）并应用正交试验设计法对钛合金弯管内表面进行了研磨试验，结合试验数据对工艺参数进行了分析和优化。通过对比钛合金弯管内表面研磨前后的表面粗糙度及形貌变化，验证了采用磁力研磨工艺对弯管内表面进行光整加工的可行性和可靠性。

Optimization of Process Parameters on Magnetic Abrasive Finishing to Inner Surface of Bending Pipe

A magnetic abrasive finishing was utilized to make the magnetic abrasive device mounted on the six degrees of freedom manipulator to take the magnetic brush inside the bending pipe to reciprocate along center axis of the elbow. The magnetic abrasive device was whirled at the same time, then the technical problem to polishing the inner-surface of the space elbow pipe was solved. Several major process parameters(pole speed, gap, magnetic abrasive particle size, the axial feed rate) obviously impacting the magnetic abrasive polishing to inner-surface of the space bending pipe were selected to make polishing experiments by orthogonal technology. The process parameters of magnetic abrasive polishing were analyzed and optimized  combined with experimental data. By comparing the surface roughness and the change of surface morphology before and after polishing, it verifies the feasibility and reliability of magnetic abrasive finishing to inner surface of space bending pipe.