ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Formation and Stability of Conical Electrode in ED-milling with Fix-length Compensation Method
Received date: 2013-06-14
Revised date: 2013-11-04
Online published: 2013-11-09
Supported by
National Natural Science Foundation of China (51205252)
Electrical discharge milling (ED-milling) with simple cylindrical electrode is applied to machining complex parts. In the process of ED-milling, the electrode wear compensation is needed to guarantee the machining precision. The bottom of cylindrical electrode will become conical during the ED-milling process with fix-length compensation method. Studies of the formation and stability of the conical bottom of electrode are conducted in order to ensure the compensation precision. Through the experiments carried out on the workpiece with fix-length compensation method, the formation process of conical bottom is illustrated. When the milling process becomes stable, the angle of conical bottom keeps almost unchanged. The influence of initial machining depth and compensation length on the transition length is also studied. Further experiments reveal that with constant electrode diameter and electrical parameters, the function relationship between the angle and machining depth in the model has been verified rational. The relative error between experimental results and theoretical results is 2.1%, and the method is proved to be effective with a machined cavity.
HE Lei , PEI Jingyu , ZHENG Bowen , JIN Fangjin . Formation and Stability of Conical Electrode in ED-milling with Fix-length Compensation Method[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(4) : 1165 -1172 . DOI: 10.7527/S1000-6893.2013.0454
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