摘要
航空航天领域大量使用的薄壁叶片等复杂曲面零件,多采用立式铣削方法加工制造。增大刀具与工件接触可以提高加工效率,但刀具的结构参数对铣削质量影响较大。建立铣削力学模型,对立式铣削加工进行分析,确定铣削加工过程中的主要影响因素是铣刀螺旋角、铣刀直径和铣刀刃数。采用AdvantEdge FEM软件,以单变量因素进行铣削有限元仿真,分析铣削力、加工形变、应力应变等影响。结果表明:铣刀螺旋角增大,铣刀半径增加,铣刀刃数增加,可有效地改善刀具应力和形变,增强刀具振动的稳定性,提高加工质量。
Vertical milling is often adopted in manufacturing of complex curved surfaces such as thin-walled blades used in the aerospace,In order to improve the machining efficiency and surface quality,the contact between tool and workpiece is always increased.But the cutter structure parameter is very important for milling quality.The vertical milling process is analyzed and the mechanical model of milling is established.The main factors influencing the milling process are the spiral Angle,the diameter of the milling cutter and the number of edge of milling cutter.AdvantEdge FEM software is used for finite element simulation of milling.The finite element simulation of milling is carried out by using univariate factors.The milling force,machining deformation,stress and strain are analyzed.The results show that the stress and deformation of cutter,the stability of tool vibration and the quality of machining are effectively improved by increasing the spiral Angle,radius of milling cutter,and number of edge of milling cutter.
作者
周欣
张宇琨
Zhou Xin;Zhang Yukun(School of Mechanical Engineering,Xi'an Aeronautical University,Xi'an 710077,China;The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology ofMinistry of Education,Northwestern Polytechnical University,Xi'an 710072,China)
出处
《航空工程进展》
CSCD
2019年第2期234-240,269,共8页
Advances in Aeronautical Science and Engineering
基金
陕西省教育厅科研计划项目(17JK0396)
西安航空学院科研基金(2018KY1227)
关键词
立铣
铣削力
影响因素
有限元仿真
vertical milling
milling force
influencing factors
finite element simulation
