METHOD OF ELECTROCHEMICAL PROCESSING WITH UNSHAPED ELECTRODE TOOL AND DEVICES FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC B23H3/02 B23H3/04 B23H7/04 B23H7/22 B23H7/26 

FIELD: technological processes.

SUBSTANCE: invention relates to the field of electrochemical processing and can be used to cut narrow curved grooves and slots in parts made of high-strength steels and alloys. In the method, the electrochemical processing is carried out by multi-coordinate movement in several successive transitions by a rotating electrode tool, made in the form of a fixed at both ends long elastic plate of permanent cross-section with a substantially different ratio of overall dimensions in the direction of the symmetry axes rotating around the longitudinal axis. At that, in the method the first transition can be carried out at a constant voltage, at that, the axes of the plate initial and final cognominal cross-sections are turned relative to each other about the longitudinal axis, by a certain angle of shear γ, providing the creation of a screw twisting of the electrode tool. first transition can also be performed on a pulsed voltage, without the plate first twisting at a shear angle of γ=0. At that, voltage pulse or a group of voltage pulses switching phase in each turn of the electrode tool is varied depending on the direction of the supply vector, ensuring the switching of a pulse or a group of pulses at a time, when the axis of symmetry parallel to the long side of the cross section of the electrode tool with the supply vector forms a predetermined angle of ϕ, less than 90 degrees, and switching off the voltage after turning the electrode tool by an angle of 2ϕ from the moment of switching on. At that, further transitions are carried out in the groove previously obtained at the first transition, at that, the voltage pulses are supplied synchronously with the rotation of the electrode tool, but with a pulse switching on phase shift and the pulse switching off phase by 90 degrees relative to the supply velocity vector in the direction of the finally processed groove surface.

EFFECT: providing a larger depth of the cut groove, the possibility of a complex contour cutting with the generatrix variable slope angles.

26 cl, 11 dwg, 1 ex