Electromechanical machining method, method of manufacturing perforated material, processing electrode, and electromechanical machining system

An electromechanical machining method of forming a curved-shaped processing hole in a workpiece by electromechanical machining, the method comprising:

• a step of feeding an electrolytic solution through an inner channel of a processing electrode and jetting the electrolytic solution from an outlet opening of the inner channel disposed on a tip surface of the processing electrode;
• a step of applying a potential difference between the processing electrode and the workpiece while jetting the electrolytic solution from the outlet opening of the processing electrode;
• and
• a step of forming the curved-shaped processing hole in the workpiece,
• wherein, in the step of jetting the electrolytic solution, a current density distribution on the tip surface of the processing electrode is eccentric to a downstream side of a curving direction of the processing hole with respect to an axial center of the tip surface of the processing electrode,
• wherein a centroid of a region of the tip surface excluding the outlet opening is eccentric with respect to the axial center of the tip surface, and
• wherein the processing hole is formed with a curve in a direction in which the centroid of the region deviates with respect to the axial center.

An electromechanical machining method of forming a curved-shaped processing hole in a workpiece by electromechanical machining, comprising:

• a step of feeding an electrolytic solution through an inner channel of a processing electrode and jetting the electrolytic solution from an outlet opening of the inner channel disposed on a tip surface of the processing electrode;
• a step of applying a potential difference between the processing electrode and the workpiece while jetting the electrolytic solution from the outlet opening of the processing electrode;
• and
• a step of forming the curved-shaped processing hole in the workpiece,
• wherein, in the step of jetting the electrolytic solution, at least one of a current density distribution on the tip surface of the processing electrode or a flow velocity distribution of the electrolytic solution jetted from the outlet opening is eccentric to a downstream side of a curving direction of the processing hole with respect to an axial center of the tip surface of the processing electrode, and
• wherein the inner channel is divided into a plurality of inner channels by a partition portion, and at least one of the plurality of divided inner channels is clogged.

A processing electrode for forming a curved-shaped processing hole in a workpiece by electromechanical machining, comprising:

• an inner channel configured to be able to feed an electrolytic solution in an axial direction of the processing electrode;
• and
• a tip surface where an outlet opening of the inner channel for jetting the electrolytic solution is formed,
• wherein a centroid of the outlet opening is eccentric to a downstream side of a curving direction of the processing hole with respect to an axial center of the tip surface.

An electromechanical machining system comprising:

• at least a processing electrode for forming a curved-shaped processing hole in a workpiece by electromechanical machining,
• the processing electrode comprising an inner channel configured to be able to feed an electrolytic solution in an axial direction of the processing electrode, and a tip surface where an outlet opening of the inner channel for jetting the electrolytic solution is formed, wherein at least one of a centroid of a region of the tip surface excluding the outlet opening or a centroid of the outlet opening is eccentric with respect to an axial center of the tip surface,
• wherein the electromechanical machining system is configured to be able to form the processing hole in the workpiece by electromechanical machining using the processing electrode, and
• wherein the electromechanical machining system further comprises an electrolytic solution supply amount adjustment device configured to be able to adjust a supply amount of the electrolytic solution to each of a plurality of inner channels formed in the processing electrode.