Blisk is one of the critical parts of aero-engine whose surface processing quality directly affects the performance of aero-engine. The vibration phenomenon usually happened in the novel open belt grinding, and seriously affects the dimension precision as well as the surface quality of the whole blade profile. In order to figure out that, this paper established a vibration model for the blisk belt grinding. The weak rigidity characteristics of the system were analyzed initially, and the vibratory mechanism was revealed from the view of dynamic analysis. Based on the theoretical model, the stability conditions were proposed by analyzing the influencing of vital factors on processing stability. The experimental validation indicated that the vibration signal waveforms during the process had been successfully reduced by introducing adjustment of grinding parameters. The profile accuracy of the blade contour edge was improved by 9.53 % from the range of −0.0376–0.1145 mm to that of −0.0359–0.1017 mm. After parameter adjustment, the smoothness of the micro-morphology of the blade surface was improved, and the roughness of the blade surface decreased from Ra 0.379–0.573 μm to 0.291–0.368 μm, which fully met the processing requirement of Ra <0.4 μm.

Blisk是航空发动机的关键部件之一，其表面处理质量直接影响航空发动机的性能。振动现象通常发生在新型的开式砂带磨削中，严重影响了整个叶片轮廓的尺寸精度以及表面质量。为了弄清这一点，本文建立了叶轮磨削的振动模型。首先分析了系统的弱刚度特性，并从动态分析的角度揭示了振动机理。在理论模型的基础上，通过分析关键因素对加工稳定性的影响，提出了稳定条件。实验验证表明，通过调整磨削参数可以成功降低过程中的振动信号波形。刀片轮廓边缘的轮廓精度从-0.0376-0.1145 mm到-0.0359-0.1017 mm范围提高了9.53％。调整参数后，提高了叶片表面微观形貌的光滑度，并使叶片表面的粗糙度从Ra 0.379–0.573μm降低至0.291–0.368μm，完全满足Ra <0.4μm的加工要求。