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针对开式整体叶盘叶片数控加工中存在的干涉及刀轴变化稳定性问题,提出了一种基于刀轴控制线的四轴刀轴矢量控制方法。阐述了基于刀轴控制线的四轴刀轴控制基本原理,通过对四轴无干涉刀轴摆动区间的计算,建立了四轴无干涉刀轴控制面;根据控制线生成准则,给出了在刀轴控制面上生成刀轴控制线的具体算法。实验验证表明,该方法不仅可解决开式整体叶盘叶片加工中的刀具干涉问题,而且有效避免了刀轴突变引起的叶片啃伤现象,明显提高了叶片表面的加工质量。
Aiming at the problem of the interference and the change of the stability of the spindle in NC machining of the open leaf disc, a four-axis tool axis vector control method based on the tool axis control line is proposed. The principle of four-axis arbor control based on arbor control line is expounded. Four-axes non-interfering arbor control surface is established through the calculation of the four-axes non-interfering arbor swinging range. According to the control line generation criterion, Knife axis control plane to generate tool axis control line of the specific algorithm. Experimental results show that this method can not only solve the problem of tool interference in the processing of open leaf disc, but also avoid the phenomenon of blade galling caused by blade abrupt change and improve the processing quality of the blade surface obviously.