基于整体叶轮加工后置信息的五轴机床整体结构配置优化

Structural configuration optimization of five-axis machining center based on the post processing information of impellers

介绍了一种基于整体叶轮加工后置信息的五轴机床整体结构配置优化方法。后置信息包含整体叶轮加工过程中机床各轴位移信息和进给速度信息,通过提取分析后置信息,获取整体叶轮加工过程中机床各轴加速度信息。在此基础上根据机床结构,计算整体叶轮加工过程中各轴惯性力大小。以减小最大惯性力和整体惯性力为目标,改变机床运动链顺序,对机床结构配置进行优化,以提高机床的动力学性能,为机床设计人员提供了一种新的专用机床结构配置的优化方法。

Structural configuration optimization of the five-axis machining center based on the post processing intbrmation of impellers was presented. The post processing information covers all the information entered into the NC system when machining the impeller, including the displacement and the feed speed. So the acceleration information of the machine axis could be obtained by post processing information extraction and analysis. Then the machine axis inertial force was calculated according to the machine tools structure. The kinematic chain was changed to reconfigure the machine tools structure based on the principle of reducing the maximum inertia force and overall inertia force, in order to improve machine dynamics performance. The paper provided a new approach of special machine tools structure optimization for designers.