摘要
针对某航空发动机TC4整体叶轮在数控加工过程中存在颤振、加工效率低及因加工变形而导致局部超差等问题,提出了相应的铣削参数优化解决方案。在进行切削力系数辨识试验获取TC4材料的切削力系数及锤击试验获取加工系统动力学特性参数的基础上,通过综合使用自行开发的铣削加工动力学仿真软件SimuCut和国外的CutPro软件进行动力学仿真与优化,获得了优化的切削参数。使用优化的切削参数进行加工,有效地消除了颤振和因加工变形引起的局部超差,提高了加工效率。
Optimization of milling parameters is applied to solve the problems of chatter, low ma- chining efficiency and local machining out-of-tolerance due to machining deformation in the fabrication of TC4 integrated impeller of an aeroengine. Based on the cutting force coefficients of TC4 material gained by cutting force coefficient identification tests and the dynamic parameters of the machining system gotten by hammer tests, the optimized cutting parameters are obtained by using the self-developed dynamic simulation software SimuCut for milling and the oversea counterpart CutPro synthetically. The optimized cutting parameters are used in practical milling process, and the machining defor- mation resulted from the machining chatter and the local out-of-tolerance are eliminated and the machining efficiency is improved.
出处
《航空制造技术》
2008年第24期80-85,共6页
Aeronautical Manufacturing Technology
基金
国家科技支撑计划资助项目(2006BA103A6)
湖南省教育厅科学研究项目(08D096)资助
关键词
动力学仿真
颤振稳定性
切削参数优化
整体叶轮加工
Dynamic simulation Chatter stability Cutting parameter optimization Machining of integrated impeller
