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基于研制的自动化抛光系统,针对整体叶盘叶片抛光加工的颤振问题,分析了颤振后叶片表面的几何形貌。结合整体叶盘叶片自动化抛光系统,阐述了抛光颤振机理。基于颤振机理确定了编程技术优化、抛光参数优化、提高系统刚性等3种抛光颤振抑制技术,获得了优化后的刀轴方向、抛光轨迹、抛光参数及工艺填充方法。经试验验证,颤振现象,叶片波纹度、平均误差、表面粗糙度等减小,表面质量得到较大提升,颤振痕迹明显消除。
Based on the developed automatic polishing system, in view of the flutter of the whole leaf disc polishing processing, the geometry of the flutter blade surface is analyzed. Combining with the whole leaf disc automatic polishing system, the mechanism of polishing chattering is expounded. Based on the flutter mechanism, three kinds of polishing flutter suppression techniques, including optimization of programming techniques, optimization of polishing parameters and improvement of system rigidity, were determined. The optimized tool axis orientation, polishing path, polishing parameters and process filling method were obtained. The experimental verification shows that the flutter phenomenon, the waviness of the blade, the average error, the surface roughness and the like are reduced, the surface quality is greatly improved, and the chatter marks are obviously eliminated.