【摘要】 航空结构件、航空叶片等薄壁零件是航空制造的关键零件,具有若刚性、材料难加工、工艺优化不足等特点,其加工精度难以控制。针对航空薄壁零件的在机测量与误差补偿方法展开研究,针对规则航空薄壁零件提出均值误差补偿方法,并在此方法的基础上延伸为针对自由曲面的分段误差补偿方法,最后对航空叶片进行了数控加工、原位检测及补偿加工实验,实验结果表明,补偿前后误差区间从0.15 mm~0.35 mm缩小到了-0.04 mm~0.06 mm,验证了分段误差补偿方法在加工几何偏差控制上的效果。更多还原

【Abstract】 Thin-wall parts,such as aviation structures and blades,are key parts of aviation manufacturing,with weak rigidity,difficult machining,complex shape and other technical features. The machining accuracy is very difficult to control for thin-wall parts. This article researched on the on-site inspection and compensation machining method for aviation thin-walled parts,and purposed a mean error compensation method of rule characteristics of thin-walled. Based on this method,segmented compensation method for fine machining of free-form surface characteristics of thin-walled is furtherly purposed. Finally,the experiment of on-site inspection and compensation machining of an aviation blade is executed. After compensation machining,the machining error burst is reduce from 0.15 mm ~ 0.35 mm to-0.04 mm ~ 0.06 mm. The experiment verified that segmented compensation method is effective to reduce the machining error of thin-wall parts.更多还原