FIELD: electrochemical dimensional working, mainly of non-rigid blanks such as printed circuit board blanks in pulse-cyclic mode.
SUBSTANCE: method for electrochemical dimensional working of blanks in flow-through electrolyte by means of tool-electrode in pulse-cyclic mode comprises steps of periodically changing during working process direction of feeding electrolyte into inter-electrode gap. Change of electrolyte feed direction is realized at rotating blank together with tool-electrode around axis normal to electrolyte feed direction during pauses between pulses of technological current. Rotation angle is selected according to relation: φ = (2n - 1)π/Kc - 1, where φ - rotation angle of worked blank and tool-electrode; n- positive integer; Kc - working cycle number.
EFFECT: enhanced accuracy of working printed circuit board blanks.
2 dwg
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