Patent ID: 9149880
Filing Date: 2015-10-06
Classification: B23H

Abstract:
1. An electrical discharge machine that performs electrical discharge machining on a workpiece by supplying a machining fluid to a machining gap between a machining electrode and the workpiece, the electrical discharge machine comprising: an air-bubble generation unit that generates air bubbles in the machining fluid; a storage unit that stores therein the machining fluid containing the air bubbles generated by the air-bubble generation unit; and a flow-rate adjustment unit that adjusts a flow rate of the machining fluid that flows in the storage unit, wherein the flow-rate adjustment unit adjusts the flow rate according to a diameter of the air bubbles, which is contained in the machining fluid to be supplied to a machining tank in which the workpiece is placed, such that the air bubbles are suppressed to rise in the machining fluid.