叶轮流道多轴高效插铣加工刀具轨迹规划方法
|
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.
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.
引文
[1]秦旭达,贾昊,王琦,等.插铣技术的研究现状[J].航空制造技术,2011,377(5):41-43.
[2]El-Midany T T,Elkeran A,Tawfik H.Optimal CNC plunge selection and toolpoint generation for roughing sculptured surfaces cavity[J].Journal of Manufacturing Science and Engineering,2006,128(4):1025-1029.
[3]Tawfik H.A new algorithm to calculate the optimal inclination angle for filling of plunge-milling[J].International Journal of CAD/CAM,2009,6(1):801-809.
[4]胡创国,张定华,任军学,等.开式整体叶盘通道插铣粗加工技术的研究[J].中国机械工程,2007,18(2):153-155.
[5]Shan C W,Zhang D H,Ren J X,et al.Research on the plunge milling techniques for openblisks[C].Materials Science Forum.Trans Tech Publications,2006,532:193-196.
[6]Ren J X,Yao C F,Zhang D H,et al.Research on tool path planning method of four-axis high-efficiency slot plunge milling for open blisk[J].International Journal of Advanced Manufacturing Technology,2009,45(1-2):101-109.
[7]任军学,田卫军,姚倡锋,等.钛合金整体结构件高效插铣工艺实验研究[J].中国机械工程,2008,19(22):8572-8575.
[8]梁全,王永章,富宏亚,等.直纹面叶轮插铣加工关键技术[J].计算机集成制造系统,2011,16(1):182-187.
[9]魏国家.整体叶轮插铣粗加工刀具轨迹规划研究[J].风机技术,2016,(3):66-71.
[10]刘适,崔雅文,彭雨.航空结构件转角特征数控铣削程编工艺方法研究[J].制造技术与机床,2013(11):94-100.
[11]韩飞燕,张定华,吴宝海,等.高缠绕叶轮流道4+1轴高效分段开槽方法[J].航空学报,2015,36(5):1684-1694.第一作者:韩飞燕,女,年生,博士研究生,讲
[2]El-Midany T T,Elkeran A,Tawfik H.Optimal CNC plunge selection and toolpoint generation for roughing sculptured surfaces cavity[J].Journal of Manufacturing Science and Engineering,2006,128(4):1025-1029.
[3]Tawfik H.A new algorithm to calculate the optimal inclination angle for filling of plunge-milling[J].International Journal of CAD/CAM,2009,6(1):801-809.
[4]胡创国,张定华,任军学,等.开式整体叶盘通道插铣粗加工技术的研究[J].中国机械工程,2007,18(2):153-155.
[5]Shan C W,Zhang D H,Ren J X,et al.Research on the plunge milling techniques for openblisks[C].Materials Science Forum.Trans Tech Publications,2006,532:193-196.
[6]Ren J X,Yao C F,Zhang D H,et al.Research on tool path planning method of four-axis high-efficiency slot plunge milling for open blisk[J].International Journal of Advanced Manufacturing Technology,2009,45(1-2):101-109.
[7]任军学,田卫军,姚倡锋,等.钛合金整体结构件高效插铣工艺实验研究[J].中国机械工程,2008,19(22):8572-8575.
[8]梁全,王永章,富宏亚,等.直纹面叶轮插铣加工关键技术[J].计算机集成制造系统,2011,16(1):182-187.
[9]魏国家.整体叶轮插铣粗加工刀具轨迹规划研究[J].风机技术,2016,(3):66-71.
[10]刘适,崔雅文,彭雨.航空结构件转角特征数控铣削程编工艺方法研究[J].制造技术与机床,2013(11):94-100.
[11]韩飞燕,张定华,吴宝海,等.高缠绕叶轮流道4+1轴高效分段开槽方法[J].航空学报,2015,36(5):1684-1694.第一作者:韩飞燕,女,年生,博士研究生,讲