Abstract: The flexible speed planning control method is adopted to make the motion parameters such as speed,acceleration and Jerk continuous as possible in CNC machining,reducing the impact of the tool on the parts during the speed change process and improving the processing quality.However,motion parameters such as speed are rarely stored as intermediate variables during machining,and it is difficult to correspond to the surface quality of specific parts.The continuity and smoothness of motion parameters have an important causal relationship to the improvement of surface quality.On this basis,the motion parameters were saved to estimate the surface quality by visualizing the motion parameters.In this method,the real-time motion parameters of the NC system were collected,and the corresponding relationship were established between the parameters and the surface space points of the parts.According to the different size and intensity of the motion parameters,the gradient color method was used to match the corresponding space points,and the surface quality was adjusted by whether the color changes uniformly.An example results showed that the method was simple and efficient,and performance could be a good estimation of feedrate planning.

Key words: feedrate planning, motion parameters, visualization, quality estimation

摘要： 数控加工采用柔性速度规划控制方法,使得速度、加速度及捷度等运动量连续,减少刀具在变速过程中对零件冲击从而提高加工质量。但是速度等运动参数在加工中作为过程量很少保存,很难与具体零件表面质量相对应,而运动参数的连续性和平滑性对表面质量的改善有重要因果关系。因此,将运动参数保存起来,通过运动参数可视化来预估表面质量情况。该方法通过采集数控系统实时运动参数,建立参数与零件表面空间点对应关系,根据运动参数的不同大小和强度,通过渐变色方法,在与之对应的空间点匹配着色,通过颜色是否均匀变化来判断表面质量情况。通过实例证明了该方法简洁高效,能很好地预估加工表面质量。

关键词: 速度规划, 运动参数, 可视化, 质量预估