Clamp for passivating cutter

The invention relates to a clamp for passivating a cutter. The clamp comprises a shell body, a speed changer, an air cylinder, a clamping jaw and other components. Three groups of clamping jaws with high universality are arranged on the end surface of the clamp and used for clamping the cutter, and magnetic sensors are arranged on the clamping jaws; a first transmission shaft is arranged at one end of the shell body and used for being connected with a movement mechanism, the other end of the first transmission shaft is connected with a rotating table and a transmission, the transmission is connected with the air cylinder through a second transmission shaft and can achieve three-speed conversion, a speed changing button is installed on the end surface of the shell body, and the air cylindercontrols clamping of clamping jaws through a connecting rod mechanism; and the first transmission shaft drives the clamp to integrally rotate, and the second transmission shaft drives the three groups of clamping jaws to rot