The special cutting tool for cutting C-shaped steel members after forming is characterized in that it includes a moving knife fixed on the movable cutter fixed plate and a fixed cutter fixed on the fixed cutter fixing plate. The fixed cutter and the movable cutter are respectively provided with a fixed cutter reinforcing plate and a moving cutter reinforcing plate which closely cooperate with the fixed cutter and the moving cutter.
The fixed knife reinforcing plate is fixedly connected with the fixed knife fixed plate and the fixed knife, the moving knife reinforcing plate is fixedly connected with the moving knife fixing plate and the moving knife respectively, the moving knife fixing plate is fixed on the hydraulic shearing frame, and the fixed knife fixing plate is fixed on the support frame.
The moving blade reinforcing plate is a T-shaped structure reinforcing plate composed of horizontal reinforcing plate and vertical reinforcing plate. The connection between the horizontal reinforcing plate and the moving blade fixing plate is reinforced and positioned by the frame fixing key. The vertical reinforcing plate extends to the moving knife cavity, and the vertical reinforcing plate and the moving knife are connected through the tool fixing key.
Compared with the prior art, the invention has the advantages of compact structure, reasonable design, good bearing capacity, good stability, etc. after the test of the testing machine, the cutter and the hydraulic shear frame are easy to disassemble and assemble, the cutting effect is good, the structural performance of the die is good, and the performance of the whole shear unit is stable.