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电火花铣削可以利用简单电极加工复杂工件,对铣削过程中电极损耗进行补偿是保证工件加工精度的重要措施。使用圆柱电极进行定长补偿铣削加工,加工过程中电极端面会形成一个圆锥形。为保证补偿精度,对电极圆锥形端面的形成及稳定性进行了研究。通过对定长补偿下工件被加工情况的研究,阐述了圆锥形电极形成的具体过程;并且论证了在加工进入稳定阶段以后,圆锥端面角度会基本保持在一个恒定值,研究了初始加工深度和补偿长度对锥形过渡阶段的影响;在电极直径、电参数一定情况下,验证了加工模型中锥形角度与目标加工深度的函数关系,实验结果与模型计算结果相差2.1%;最后给出了加工实例,并获得较好的加工效果。
EDM milling can be used to process complex parts of simple electrodes, the electrode wear compensation during milling compensation is an important measure to ensure the accuracy of the workpiece. The use of cylindrical electrodes for length compensation milling, the electrode surface during processing will form a cone. In order to ensure the compensation accuracy, the formation and stability of the conical end face of the electrode were studied. Through the research on the workpiece processing under the fixed-length compensation, the concrete process of the conical electrode is elaborated. It is also demonstrated that the angle of the conical end surface will be kept at a constant value after the processing enters the stable stage. The initial machining depth and The effect of compensation length on the taper transition phase is verified. The relationship between the taper angle and the target machining depth in the machining model is verified under the condition of the electrode diameter and the electrical parameters. The experimental results are 2.1% different from the model calculation results. Finally, Processing examples, and get better processing results.