Laser lifting rack

The utility model relates to a laser lifting rack by which a laser measuring head can be applied to a polycrystalline diamond saw blade side milling EDM (Electric Discharge Machining) machine tool. The laser lifting rack is composed of a transmission mechanism and a lifting mechanism. The transmission mechanism is composed of an alternating-current servo motor through a worm-gear speed redcucer, a driving belt wheel, a cog belt, a driven belt wheel, a cog belt fixing block, wherein the cog belt fixing block is connected with the cog belt in the transmission mechanism and a vertical plate in the lifting mechanism; the lifting mechanism is composed of the vertical plate, a linear guide rail, two measuring head rods, a laser receiver, a cross beam, a slider and a laser transmitter; the transmission mechanism and the lifting mechanism both are mounted on a base plate; the power of the transmission mechanism is transferred to the lifting mechanism through the cog belt and the cog belt fixing block; under a numeric