| 摘要:针对一些具有复杂曲面的零件,采用五轴联动加工存在编程繁琐、加工效率低及刚性差的问题,提出了五轴定轴加工方法。在分析双转台五轴机床空间运动坐标系的基础上,通过齐次坐标变换及其逆运算得到机床定轴运动坐标。运用该方法对增压器整体叶轮流道的实际加工显示:叶轮流道余量均匀,加工效率提高；验证了双转台五轴数控机床定轴运动学研究的可行性。 |
| 关键词: 双转台五轴数控机床 定轴加工 定位坐标系 齐次坐标变换 |
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| Kinematics Research of Fixed Axis on Five-axis CNC Machine with Dual Rotary Tables |
| Zhang Jike,Fan Jianxin,Tu Weili,Song Mingzhong,Ling Hong |
| Shanghai Marine Diesel Engine Research Institute,Shanghai 201108 |
| Abstract:For some parts with complex curved surface, the application of five-axis machining has the problems of cumbersome programming, low efficiency and low rigidity. So the fixed axis machining method is proposed. The machine motion coordinates were obtained through the homogeneous coordinate transformation and inverse operation based on analyzing space motion coordinate systems of the machine with dual rotary tables. The actual machining of tunnel for the supercharger integral impeller has proved uniform allowance and increase of machining efficiency, so the kinematics research of fixed axis on five-axis CNC machine with dual rotary tables is confirmed. |
| Key words: five-axis CNC machine with dual rotary tables fixed axis machining position coordinate system homogeneous coordinate transformation |
