Tool clamp for machining thin-wall workpiece

The invention belongs to the field of clamps, particularly discloses a tool clamp for machining a thin-wall workpiece, and aims to solve the problems that an existing tool clamp difficultly clamps thethin-wall workpiece and serious deformation of the thin-wall workpiece is easily caused. According to the tool clamp for machining the thin-wall workpiece, a sliding block can be driven by a machinetool pull rod to move towards the side away from a clamp disc in a sliding block cavity and compress a spring, then an elastic clamping sleeve moves along with the sliding block, a sleeve opening of the elastic clamping sleeve stretches out of a clamping piece hole, the inner diameter is increased, and the thin-wall workpiece can be conveniently installed; then the machine tool pull rod returns, and the sliding block can be driven to move towards the side close to the clamp disc in the sliding block cavity through the spring in a compressed state; and the elastic clamping sleeve moves along with the sliding block, the