Mechanical deflection chuck

The utility model discloses a mechanical deflection chuck which comprises a base, a first cam is arranged at the front end of the base, and a first protrusion is arranged on the outer side wall of the first cam. The first sleeve is provided with a first assembly hole, the first assembly hole is rotatably arranged outside the base in a sleeving mode, a first open groove is formed in the side wall of the first sleeve, and a first limiting block is arranged on the inner wall of the first assembly hole; the first sliding block is arranged in the first open groove in a sliding manner; comprising the following states: in the first state, a gap is reserved between the inner side wall of a first sliding block and the outer side wall of a first cam; in the second state, the first limiting block abuts against the first protrusion, the inner side wall of the first sliding block abuts against the first protrusion, and the first sliding block extends out of the first open groove. According to the mechanical deflection chu