Cutter clamping device for cutter grinding machine

The utility model discloses a cutter clamping device for a cutter grinding machine, which comprises a mounting shell and a cutter, and a limiting mechanism for fixing the cutter is arranged in the mounting shell; the limiting mechanism comprises two symmetrically-arranged clamping plates, limiting ejector pins are fixed to the positions, close to each other, of the bottoms of the inner walls of the two clamping plates, a driving assembly for adjusting the two clamping plates is arranged in the mounting shell, and the cutter is movably inserted into the bottom of a connecting cylinder. Limiting holes matched with the limiting ejector pins are symmetrically formed in the two sides of the outer wall of the connecting cylinder, and an extrusion assembly used for abutting against the connecting cylinder is arranged in the mounting shell. The limiting ejector pin can be aligned with the limiting hole for limiting and buckling, the first clamping ring and the second clamping ring are embedded in the first limiting r