Special clamp for spark machining of transformer framework

The utility model relates to the technical field of spark machine electrode clamps, and discloses a special clamp for spark machine machining of a transformer framework, which comprises a connecting assembly used for connecting the clamp with a spark machine. The clamping assembly is connected to the connecting assembly and used for clamping and fixing the special electrode of the transformer framework; the limiting frame is connected to the clamping assembly and used for conducting limiting installation on the special electrode of the transformer framework. When the special clamp for spark machining of the transformer framework is used, a special electrode of the transformer framework is inserted into the inner side of the limiting frame, and after the electrode makes contact with the cambered surface part, an extrusion block is extruded towards the interior of a mounting groove, so that the extrusion block stretches into the mounting groove and extrudes an elastic piece till the plane part of the extrusion