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根据五轴数控侧铣加工主要依靠刀轴矢量姿态变化来完成的特点,对侧铣加工中的刀具半径补偿问题进行研究,提出了一种补偿方法.该方法应用在工件坐标系下,与具体的机床类型无关,充分考虑刀轴矢量可变的各种加工情形.算法包括一个加工块内的半径补偿、拐角类型的判别公式、内拐角和外拐角处的过渡处理方法.文中对补偿方法进行了误差理论分析,并结合加工实例在matlab中进行了仿真实验,实验结果显示补偿算法能够满足系统加工的精度要求.
According to the characteristics that the five-axis CNC side milling mainly relies on the tool axis vector attitude change, the problem of tool radius compensation in side milling is studied and a compensation method is proposed.The method is applied to the workpiece coordinate system Of the machine tool type, taking fully into account the variety of tool axis vector variable processing conditions.The algorithm includes a radius of compensation within the processing block, the type of corner of the discriminant formula, the inner corner and the outer corner of the transition processing method.The compensation method for the text The error of theoretical analysis, combined with machining examples in Matlab simulation experiments show that the compensation algorithm to meet the accuracy requirements of the system processing.