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本文讨论了改善廓形铣削加工精度的软件技术。在廊形铣削中,以系统综合观点详尽地研究了连续轨迹控制,并有效地使用了计算机数控。所提的实时铣刀轨迹修正,提供了克服严重的工件热变形问题的方法。为了考虑诸多因素,如:形状的变化、切削条件的改变、不稳定的热状态等,使用了适应控制来补偿廓形的热位移。在实时加工中,还估测了取决于铣刀磨损的实际铣刀半径,而铣刀直径的补偿则包括在铣刀轨迹修正中。为了确保加工精度,提出了一种廓形测量的新方法,在计算机数控系统中使用了连续轨迹控制。通过实验证明,本文所提供的方法对实现高加工精度的柔性自动装置是有用的。
This article discusses software techniques to improve profile milling accuracy. In corridor milling, continuous trajectory control is studied in detail from the viewpoint of system synthesis, and computer numerical control is effectively used. The proposed real-time cutter path correction provides a means of overcoming the severe thermal deformation of the workpiece. To account for a number of factors, such as shape changes, cutting conditions, unstable thermal conditions, etc., adaptive controls are used to compensate for profile thermal displacement. In real-time machining, the actual milling cutter radius, which depends on the wear of the milling cutter, is also estimated, while milling cutter diameter compensation is included in milling cutter path correction. In order to ensure the machining accuracy, a new method of contour measurement is proposed, and the continuous path control is used in CNC system. The experiment proves that the method provided in this paper is useful for the flexible automatic device that can achieve high machining accuracy.