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为满足微小线段高速加工的需求,在分析现有微小线段过渡算法不足的基础上,建立了圆弧过渡矢量夹角数学模型,并给出一种基于过渡圆弧的微小线段平滑过渡算法.该算法能够根据加工精度和微小线段长度确定出微小线段的转角点和过渡圆弧的大小,并可通过机床机械特性来限制过渡圆弧的最大进给速度,从而能够在保证加工精度和满足机床机械特性的条件下,最大限度的提高微小线段加工速度.最后对所提出的过渡算法进行了实际加工验证,验证结果表明该算法具有过渡平稳、误差易控、转角速度高的特点,可实现微小线段的高速和高精加工.
In order to meet the requirement of high speed machining of small line segment, a mathematical model of arc transition vector angle is established based on the analysis of the shortcoming of the existing small line segment transition algorithm, and a smooth line transition algorithm based on transition arc is proposed. The algorithm can determine the size of the corner point and the transition arc of the micro line segment according to the machining accuracy and the length of the minor line segment, and can limit the maximum feed rate of the transition circle through the mechanical characteristics of the machine tool, thereby ensuring the machining accuracy and satisfying machine tool Characteristics of the conditions to maximize the processing speed of the tiny line segment.Finally, the proposed transition algorithm is verified by the actual machining, the verification results show that the algorithm has the characteristics of smooth transition, easy error control and high corner speed, High-speed and high-precision machining.