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在实验基础上得出短电弧铣削加工进给速度对工具电极相对损耗的影响规律,并确定在特定铣削深度下的最优加工速度。实验分析发现:进给速度增加的过程中,各个阶段的损耗方式不相同;在一定范围内,随着工具电极进给速度的增加电极相对损耗呈现先减小后增大的趋势,当加工速度增加到0.75 mm/s时,电极相对损耗达到最小值10%。根据短电弧加工的机理和特点,提出了“逐差法”寻找不同铣削深度下最优电极进给速度,与手动寻找最优加工速度相对比发现二者结果相近。证明“逐差法”的准确性,为日后短电弧铣削加工探寻电极损耗提供参考。
Based on the experiment, the influence of feed rate of short arc milling on the relative wear of the tool electrode was obtained, and the optimal machining speed at a specific milling depth was determined. The experimental analysis shows that the loss modes of the different stages are different in the process of increasing the feed speed. With the increase of feed rate of the tool electrode, the relative loss of the electrode tends to decrease and then increase with the increase of feed speed. Increased to 0.75 mm / s, the electrode relative loss of 10% minimum. According to the mechanism and characteristics of short arc machining, the optimal feed speed of the electrode under different milling depths was proposed by comparing with the “seek by difference method”, which is similar to finding the optimal machining speed manually. Prove the accuracy of the “difference-by-law” and provide a reference for the future study of electrode wear in short arc milling.