摘要
微细铣削系统的动态不稳定性会导致零件表面几何精度的偏差,以微细铣削加工表面位置误差为分析对象,在不考虑可再生颤振效应的加工条件下,建立了微细铣削系统动态切削力模型,确定了表面位置误差的分析方法。采用数值分析并结合前期的铣削试验,得到了微细铣削加工的稳定域叶瓣图和表面位置误差的解析解。对比了顺铣、逆铣加工的表面位置误差,详细分析了主轴转速和轴向切削位置对表面位置误差的影响。最后,通过把稳定域叶瓣图和表面位置误差数据组合在同一个图里面进行综合分析,预测表面位置误差并优化选择加工条件。
The dynamic instability of micro milling system may cause surface geometric accuracy deviation of machined parts.For the research of surface location error of micro milling process,the dynamic milling force model is constructed and the analysis method of surface location error is determined without considering the effect of regenerative chatter.Through numerical analysis method combined with the previous milling experiments,the machining stability lobe diagram and analytical solution of the surface position error of micro milling is achieved.Then the surface location error in down milling and up milling is compared,and the influence of spindle speed and axial cutting location on surface location error is analyzed detailed.Finally,the stability lobe diagram and surface location error data is combined in the same figure and the surface location error is predicted and the processing condition is optimized by comprehensive analysis.
出处
《机械设计与制造》
北大核心
2014年第3期127-129,133,共4页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(51075288)
江苏省自然科学基金资助项目(BK2011314)
苏州市科技计划资助项目(SYG201244)
关键词
微细铣削
可再生颤振
稳定域叶瓣图
表面位置误差
Micro Milling
Regenerative Chatter
Stability Lobe Diagram
Surface Location Error
