Dual head pECM

A pulsed electrochemical machining system, comprising:

• a first tool body defining a first tool axis, the first tool body comprising a first electrode defining a first working surface configured to face a workpiece;
• a second tool body defining a second tool axis, the second tool body comprising a second electrode defining a second working surface configured to face the workpiece;
• a mechanical system configured to:
• position the first working surface of the first tool body relative to the workpiece and configured to position the second working surface of the second tool body relative to the workpiece;
• oscillate the first tool body relative to the workpiece between a closest approach and a most distant point from the workpiece while the second tool body is stationary, and
• oscillate the second tool body relative to the workpiece between a closest approach and a most distant point from the workpiece while the first tool body is stationary;
• wherein the first tool body and the second tool body are configured to oscillate at different frequencies;
• an electrolyte system configured to supply electrolyte to:
• a first interelectrode gap between the first working surface of the first tool body and a first target surface of the workpiece;
• a second interelectrode gap between the second working surface of the second tool body and a second target surface of the workpiece;
• and
• a power supply configured to generate a pulsed direct current between the first tool body and the workpiece and the second tool body and the workpiece.