Magnetic polydimethylsiloxane (PDMS) mask-based micro-pit array electrolytic machining system and method

The invention relates to a magnetic polydimethylsiloxane (PDMS) mask-based micro-pit array electrolytic machining system and method and belongs to the field of micro-electrolytic machining. The system comprises a cathode tool (1), a PDMS mask, an anode workpiece (3), a clamp (5), an electrolyte (6) and a power supply (7) and is characterized in that the PDMS mask is a magnetic PDMS mask (2), and a permanent magnet (4) for attracting the magnetic PDMS mask (2) to enabling the magnetic PDMS mask (2) to be closely attached to the surface of the anode workpiece (3) is further arranged below the anode workpiece (3). The system and the method are adopted for electrolytic machining, the magnetic PDMS mask can be closely attached to the surface of the anode workpiece under the action of a magnetic field, and the electrolytic machining locality of a micro-pit array is improved.