| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrochemical machining method and an electrochemical machining device for a common rail that can easily, uniformly and simultaneously round internal wall angular parts formed at connection parts between a plurality of distribution passages and an accumulator. SOLUTION: Since an electrolyte flows out to the distribution passages 21 due to almost uniform pressure in an electrode pipe 50, the outflow quantity to each distribution passage of a plurality of distribution passages 21 becomes almost equal. The electrolyte forms the flow that collides with the end face of a flange part 36 to flow radially outward, and the flow that flows in the circumferential direction. With the radially outward flow and the circumferential flow, the flow of the electrolyte becomes almost equal in the whole periphery of a doughnut-shaped remainder space of U-shaped cross section formed around the flange part 36. The electrolytic current comes around the internal wall angular parts 22 of the common rail 20 along the flow of the electrolyte, so that it removes the surface layers of the internal wall angular parts 22 and rounds the internal wall angular parts 22 almost uniformly. |
