The invention discloses an
electric spark-
electrolysis combined
machining device and
machining method with a micro
abrasive inward spraying function, and belongs to the field of micro-hole combined
machining. The
electric spark-
electrolysis combined machining method with the micro
abrasive inward spraying function is combined with
abrasive grinding,
electric spark corrosion and
electrolytic corrosion, work liquid is sprayed out of a tube
electrode with a certain pressure, the abrasive continuously impacts a workpiece, through the
grinding effect, the surface insulation
coating material is removed, after a
metal matrix is exposed, the tube
electrode is continuously fed, when the gap between the end face and the workpiece is smaller than the electric
spark discharge gap, electric spark discharging appears in the end face and the workpiece under the high-pressure pulse effect, and high-speed
punching is carried out; when the gap between the
electrode side wall and the hole wall is largerthan the electric
spark discharge gap,
electrolysis corrosion removing is executed in the electrode side wall and the hole wall under the low-pressure pulse effect, the hole wall re-cast layer is removed, in the
machining process, the abrasive is continuously supplied, machining efficiency is improved,
small hole one-time rapid forming machining is achieved, operation is easy, and machining efficiency is high.