Cooling system of wire cut electric discharge machine

The utility model discloses a cooling system of a wire cut electric discharge machine, which comprises a cooling mechanism which adopts cooling liquid to cool a workpiece and is arranged on the wire cut electric discharge machine, and a clamping assembly used for detachable connection is arranged between the cooling mechanism and an operation table of the wire cut electric discharge machine. The two clamping assemblies are symmetrically arranged relative to the central axis of the wire cut electric discharge machine operation table. The limiting piece is arranged between the positioning block and the spring, so that the limiting piece can play a role in guiding the positioning block, the positioning block can stably move up and down along the center of the limiting piece, hole alignment operation of the positioning block is facilitated, and the limiting piece can also play a role in limiting the spring; the reverse elastic force generated when the spring is stretched can be always in the same straight line wi