Energy Distribution Ratio into Micro EDM Electrodes
Energy Distribution Ratio into Micro EDM Electrodes
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DOI：
10.1299/jamdsm.4.1095
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发表时间：
2010
影响因子：
0.9
通讯作者：
M. Zahiruddin;M. Kunieda
中科院分区：
文献类型：
--
作者：
M. Zahiruddin;M. Kunieda
能量分配到微细电火花加工电极的比例是基于电极内的热传导引起的能量损失的比例和由碎片带走的能量的比例之间的总和。通过比较多次脉冲放电后电极温升的测量值和计算值，得到了热传导引起的能量损失比。另一方面，根据测得的清除量计算碎片带走的能量比率。微细电火花加工中阳极和阴极的能量分配率在10%~ 15%之间，相对于宏观电火花加工来说要低。这是因为在放电的早期阶段，总放电能量的更大部分被消耗用于等离子体的产生和体积增加。此外，与宏电火花加工不同，微细电火花加工中的能量损失与热传导损失相比，不能忽略碎屑带走的能量。这意味着，与宏观EDM相比，微细EDM中材料去除的能量消耗相对于分布到电极中的能量更有效。
Energy distribution ratio into micro EDM electrodes was determined based on the summation between the ratio of energy loss due to heat conduction within electrodes and ratio of energy carried away by debris. Ratio of energy loss due to heat conduction was obtained by comparing the measured and calculated temperature rise on electrode after igniting plural pulses discharges. On the other hand, the ratio of energy carried away by debris was calculated based on the measured removal volume. Energy distribution ratio into micro EDM anode and cathode was between 10% and 15% in total which was comparatively lower than that of macro EDM. This is because much larger fraction of the total discharge energy is consumed for the generation and enthalphy increase of the plasma in the early stage of discharge. Besides, unlike macro EDM the energy carried away by debris in micro EDM cannot be ignored compared with the energy lost due to heat conduction. This means, the energy consumption by material removal in micro EDM with regard to the energy distributed into the electrodes is more efficient compared to that of macro EDM.