关键词: 整体叶盘, 柔性抛光, 弹性磨具, 效率优化, 灰色关联度

Abstract: As for blisk blade profile polishing,“five-axis NC+flexible grinding head + elastic grindstone” polishing technological equipment has advantages such as high precision,minor interference and favorable adaptivity.To improve polishing quality and polishing efficiency,a mathematical calculation formula of polishing efficiency was established according to polishing principles of elastic grindstone (sanding wheel) and its optimization method was given.The efficiency-based optimized combination of technological parameters was obtained through grey relational degree analysis of orthogonal test results.The blade polishing test results indicated that efficiency-based optimized technological parameters could not only significantly shorten polishing time but also acquire qualified blade surface roughness,thus the reliability of efficiency optimization method was verified.

Key words: blisk, flexible polishing, elastic grindstone, efficiency optimization, grey relational degree