Square box type calibrating press

The invention provides a square box type calibrating press, and solves the technical problems of low working efficiency, unstable workpiece quality and the like of an existing press. The square box type calibrating press is provided with brackets, a lifting oil cylinder, a first main oil cylinder, a second main oil cylinder, a first pressing head and a second pressing head, wherein the brackets include a first bracket, a second bracket and a third bracket, and both ends of the first bracket are respectively connected with the second bracket and the third bracket so as to form a U-shaped structure; the second bracket is connected with the first main oil cylinder, and a piston rod of the first main oil cylinder is connected with the first pressing head; the third bracket is connected with the second main oil cylinder, and a piston rod of the second main oil cylinder is connected with the second pressing head; and the first pressing head and the second pressing head are oppositely arranged and can be widely appl