Adaptive belt precision grinding for the weak rigidity deformation of blisk leading and trailing edge

• Main Authors: Guijian Xiao, Yun Huang
• Format: Article
• Language: English
• Published: SAGE Publishing 2017-10-01
• Series: Advances in Mechanical Engineering
• Online Access: https://doi.org/10.1177/1687814017731705

Blisk is an important component for the aero-engine, whose surface quality plays a significant role in its performance. So it is necessary to develop a novel and viable method to improve the blisk leading and trailing edge profile shape precision and surface quality. In order to achieve these aims, the method of adaptive belt precision grinding is used to the precision manufacture for weak rigidity deformation of blisk leading and trailing edge in this article. First, the methodology of adaptive belt precision grinding for blade deformation and material removal precision is analyzed by the characteristics of blisk leading and trailing edge, the blade deformation errors are compensated by the detection and control of the contact pressure, and the precision grinding is achieved by controlling rotating speed of the contact wheel according to the contact between the belt and blisk leading and trailing edge. And then, the experiment of the belt grinding technology for the blisk leading and trailing edge is applied to verify this method, and at the same time, the device for adaptive belt precision grinding is illustrated. The experimental results show that for the leading and trailing edge after adaptive belt precision grinding, the surface roughness is less than 0.4 μm, the profile shape errors are less than 20%, and the surface glossy transition between the blade surface and the leading and trailing edge. It is proved that the method of adaptive belt precision grinding might be considered as a viable process for blisk precision manufacture.