摘要
针对超精密飞刀平面铣削中主轴空间位姿倾斜量对工件平面度的影响问题,建立了主轴空间位姿与工件平面度的对应数学模型,由仿真结果可以确定工件平面度与主轴空间位姿的定量关系。根据工件平面度对应的主轴空间位姿精度,提出了主轴空间位姿精确快速测量和调整方法。采用直径为50mm的Al6160工件进行了实验,在完成主轴位姿测量和调整后,工件平面度由2.28μm提高到了0.86μm。实验结果表明:在空间主轴位姿数学模型基础上,通过在位测量方法定量确定位姿误差,可有效提高加工精度,将工件面形提高到亚微米级水平。
The mathematic model of the spindle pose and workpiece flatness for the ultra-precision fly-milling is established to investigate influence on workpiece flatness caused by the spindle pose tilt on ultra-precision fly-milling(UFM).The numerical correspondence of workpiece flatness and spindle pose could be determined according to the simulation results.The rapid measurement and adjustment method for spindle pose in the workspace were presented base on established model between the workpiece flatness and spindle pose.The experiment was carried out using an 50 mm-diameter workpiece of Al6160 material,after the spindle pose was measured and adjusted,the flatness could be improved to be 0.86μm from 2.28μm.The experiment result indicates that spindle pose error can be determined by on-machine measurement based on the proposed mathematic model.The fly-milling flatness can be improved to be sub-micron level effectively.
作者
靳继勇
席建普
李彬
JIN Jiyong;XI Jianpu;LI Bin(School of Mechatronics Engineering,Zhongyuan University of Technology,Zhengzhou Henan 450007,China)
出处
《机床与液压》
北大核心
2019年第13期11-15,共5页
Machine Tool & Hydraulics
基金
国家自然科学基金资助项目(51705546)
河南省高等学校重点科研项目(18A460037)
关键词
超精密铣床
飞刀铣削
主轴位姿误差
坐标变换
Ultra-precision milling machine
Fly-milling
Spindle pose error
Coordinate transform
