ELECTROMACHINING APPARATUS AND METHOD

The present invention discloses an apparatus for electrical machining, where the apparatus includes a rotatable shaft and an electrode for electrical machining, and the electrode may be movably connected to the rotatable shaft. When the rotatable shaft is rotated, the electrode rotates together with the rotatable shaft and moves relative to the rotatable shaft under an action of centrifugal force, and a moving distance of the electrode is controlled based on a rotary speed of the rotatable shaft. The present invention further discloses a method for electrical machining, where the method includes: movably connecting an electrode to a rotatable shaft; inserting the rotatable shaft into a hole in a workpiece, and keeping a gap between the electrode and the workpiece, where the hole has a first diameter; powering on the electrode and the workpiece; rotating the rotatable shaft in the hole to generate centrifugal force; and pushing the electrode relative to the rotatable shaft towards the workpiece under an action of the centrifugal force to remove a portion of a material of the hole, so that the hole has a second diameter, where the second diameter is greater than the first diameter. The apparatus for electrical machining and the method for electrical machining according to the present invention are simple, easy to implement, and cost effective.