Measurement of Process Reaction Force in EDM using Hopkinson Bar Method.
Measurement of Process Reaction Force in EDM using Hopkinson Bar Method.
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DOI：
10.2493/jjspe.68.822
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发表时间：
2002
影响因子：
--
通讯作者：
Mariko Tohi;T. Komatsu;M. Kunieda
中科院分区：
文献类型：
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作者：
Mariko Tohi;T. Komatsu;M. Kunieda
本文介绍了用霍普金森杆法测量电火花加工过程中产生的加工反力。反作用力是气泡内部压力和工作表面区域上的介电液体中的压力两者的积分。利用霍普金森杆法，在不受测量系统固有频率影响的情况下，得到了正确的过程反力波形。结果表明，当放电间隙充满工作流体时，在单脉冲放电的半精加工条件下，反作用力达到近100 N。此外，还将实测结果与忽略加工液粘度的计算结果进行了比较，并研究了反力与加工条件的关系。
This paper describes the measurement of the process reaction force that is generated in EDM using Hopkinson bar method. The reaction force is an integral of both the pressure inside the bubble and that in the dielectric liquid over the working surface area. Using the Hopkinson bar method, the correct waveform of the process reaction force was obtained without influenced by the natural frequency of the measuring system. The results show that the reaction force reaches almost 100N in a semi-finishing condition in a single pulse discharge when the discharge gap is filled with a working fluid. Besides, the measured results were compared with the calculated results which were obtained by neglecting the viscosity of the working fluid under various machining conditions, and the relationships between the reaction force and machining conditions were investigated.