叶轮流道多轴高效插铣加工刀具轨迹规划方法  

Tool-path planning of multi-axis high efficiency plunge milling for impeller channel

作　　者：韩飞燕 郭卫[1] 彭先龙[1] 张武[1] HAN Feiyan;GUO Wei;PENG Xianlong;ZHANG Wu(School of Mechanical Engineering, Xi’an University of Technology,Xi’an 710054,CHN)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054

出　　处：《制造技术与机床》2019年第1期139-143,共5页Manufacturing Technology & Machine Tool

基　　金：中国博士后科学基金面上项目(2018M633537);陕西省自然科学基础研究计划(2018JQ5086);陕西省教育厅科学研究计划项目(2018JKO510);国家重点研发计划资助项目(2017 YFC0804310)

摘　　要：为提高叶轮流道的粗加工效率,弥补商用计算机辅助制造软件在多轴插铣加工路径规划方面的不足,研究了叶轮流道多轴高效插铣加工的关键技术。首先,在五轴机床一个转动轴固定一定角度的情况下,确定最大插铣刀具直径,并结合机床运动特性,建立最大刀具直径与步距、行距之间的几何约束模型。然后,通过求解该模型获得了满足加工效率和精度要求的高效插铣路径。最后,将所求插铣刀具轨迹在叶轮流道上进行了仿真与实际加工,实验表明利用该方法获得的插铣路径可以显著提高叶轮粗加工的效率。In order to improve the efficiency in impeller rough machining, and overcome the miti-axis plunge milling deficiency of commercial Computer Aided Manufacturing ( CAM) software, key technologies in freeform surface impeller plunge milling were studied. Firstly, in case of fixing a rotation axis to a certain angle in the five-axis machine tool, the largest tool diameter is calculated, and the geometric constraint model between maximum tool diameter, step distance and row space is established by analyzing the machine tool movement characteristics. Then, the geometric constraint model is solved, and tool path of plunge milling is obtained. Finally, the generated plunge tool path of impeller channel is simulated, and verified in practical processing. Simulation and experimental results shows that the plunge milling tool path obtained by this method can significantly improve the rough machining efficiency of the impeller.

关 键 词：叶轮流道 插铣加工 路径规划 几何约束模型 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]