| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Research Abstract |
This study observes the scattered debris particle and bubble coalescence in the electrical discharge machining process in order to discuss the mechanism of material removal and role of machining fluid. A high-speed video camera was used for the experiments. It is found that material removal occurs while the bubble is expanding, that is, while the pressure at the discharge point is decreasing. This result indicates that the phenomena caused by the pressure drop affects the material removal. It is also found that the generated bubbles coalesce with each other during the machining process, and the coalesced large bubble is easily ejected from the gap space. Since the debris particles are ejected along with the bubbles, the machining fluid has a role in stabilizing the EDM process.
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