| 摘要 |
PURPOSE:To finish a deep hole inner surface in an efficient manner, by reciprocating an electrolytic tool consisting of a cylindrical electrode being smaller in diameter than that of a work hole and an abrasive while rotating it at constant speed feed, in case of a finishing method of the deep hole inner surface by means of both electrolytic and grain abrasion actions in combination. CONSTITUTION:A deep hole 2 being formed in a metallic work 1 connected to an anode of a DC power source which is usually machined with a drill though, is of 6S-12S in its blank surface. On the peripheral surface of a cylindrical electrode 4 being formed into an electrode tool 3 connected to a cathode of the DC power source and rather smaller in diameter than that of the hole 2, there are provided plural pieces of a nozzle hole 5 for an electrolyte 6. Either of the tool 3 is fed into the hole 2 while being rotated or its is rotated after being fed into the hole 2, then the electrolyte 6 is made to reach an inner surface of the hole 2 from these nozzle holes 5 through an abrasive 7, and DC voltage is impressed on space between the work 1 and the electrode 4, causing the tool 3 to go one direction or to do reciprocating motion at constant speed feed, thus the inner surface of the hole 2 is finished. |
