Water cutting method for machining small-hole oil ring steel wire oil return hole

The invention discloses a water cutting method for machining a small-hole oil ring steel wire oil return hole, and relates to the technical field of water cutting of thin steel strip small holes. The water cutting method is realized through the following steps of A, assembling a positioning cavity, B, arranging a feeding mechanism, C, assembling a water cutting assembly, D, positioning and clamping a steel wire, E, cutting the left side for the first time, F, switching right side cutting and left side pressure relief, G, switching left side cutting and right side pressure relief, and H, alternately, circularly and uninterruptedly cutting. By means of the water cutting method, alternate uninterrupted water cutting machining can be conducted on the interval type oil return holes of the two small-hole oil ring steel wires, the high-precision oil return holes can be rapidly, accurately and automatically cut, burrs, thermal deformation and tissue changes of the oil return holes can be effectively avoided, and the