The invention discloses a method and a device for electrolytic
machining of massive array tiny pits through a wedge-shaped runner, and belongs to the technical field of electrolytic
machining. The method includes
processing the surface of a
mask plate to enable the surface to fit with the surface of a workpiece
anode; fixing a wedge-shaped tool
cathode above the
mask plate to enable the wedge-shaped runner to be formed between the wedge-shaped tool
cathode and the
mask plate; connecting the workpiece
anode and the wedge-shaped tool
cathode with an
anode and a cathode of a power source respectively; feeding an
electrolyte into the wedge-shaped runner, wherein the
electrolyte reaches the surface of the workpiece anode through penetrating group holes in the mask plate; switching on the power source for electrolytic
machining. The runner is arranged to be wedge-shaped, so that
electric field intensity and
electrolyte flowing speed are enabled to be progressively increased along the direction of the runner, both
corrosion strength and speed of a workpiece are enabled to tend to be uniform, and uniformity and machining accuracy of electrolytic machining are improved. A PDMS (
polydimethylsiloxane) template is taken as the mask plate,
bonding strength of the mask plate and the workpiece anode can be guaranteed, stray
corrosion, of the electrolyte, to places around a machining area can be effectively reduced, and locality and uniformity of electrolytic machining can be improved.