Flexible polishing technology for blade of aviation engine

This paper starts with an analysis of the structural features of blades in aeroengines and their polishing process requirements, and then proposes a technology of flexible abrasive belt grinding head that can remove the impact of the waviness of the blade in order to realize their automatic polishing and satisfy the requirement of accuracy. On the basis of the polishing structure, a flexible polishing process and polishing force control method are discussed. In addition, the technology of automatic programming and path planning are studied so as to achieve automatic and efficient polishing of the blade. The polishing test results show that after automatic polishing the profile error is ±0.06 mm and the surface roughness is less than R_a0.4. Compared with the manual polishing process, the automatic polishing technology not only enhances the polishing efficiency and quality stability, but also reduces considerably labor intensity and dust pollution.