摘要
为了提高叶片的加工质量、降低叶片成品的废品率和加工成本,以航空发动机薄壁叶片数控铣削、抛光、振动光饰、喷丸强化的典型加工工艺为研究对象,提出了一种面向多工序的加工变形误差补偿方法及加工检验模型的建立方法。分析各工序的加工变形规律,将多工序变形误差作为一个整体,利用反变形误差补偿方法建立数控精铣工序的加工模型。图纸要求的理论模型只作为最终检验模型,而工序检验模型根据后续加工误差累加对最终检验模型修改得到。通过实例验证,该方法有效地降低了叶片工序检验结论的误判率,保证了工序检验合格及最终检验合格的要求。
In order to improve the machining quality of blade,reduce the scrap rate of finished blade and the machining cost.In this paper,the typical machining processes of aero-engine thin-walled blades,such as CNC milling,polishing,vibration polishing and shot peening,are taken as research objects.An error compensation method for a Multi-stage machining deformation and the method of establishing the machining model and inspection model are proposed.The theoretical model required by the drawing is only used as the final inspection model,and according to the accumulation of subsequent processing errors,the process inspection model is modified by the final inspection model.Through the example verification,the method proposed in this paper can effectively reduce the false positive rate of the blade process inspection and ensure the qualified process inspection and final inspection.
作者
蔺小军
崔彤
杨碧颖
杨锐
辛晓鹏
LIN Xiaojun;CUI Tong;YANG Biying;YANG Rui;XIN Xiaopeng(School of Mechanical Engineering,Northwestern Polytechnical University,Xi’an 710072,China;Institute of Mechanical Manufacturing Technology,China Academy of Engineering Physics,Mianyang 221116,China)
出处
《航空学报》
EI
CAS
CSCD
北大核心
2019年第11期319-328,共10页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(51675439)~~
关键词
多工序
加工变形
误差补偿
加工模型
检验模型
multi-stage machining processes
machining error
error compensation
machining model
Inspection models
