Special clamp for grinding rear cutter face of face and side milling cutter

The utility model discloses a special fixture for grinding a rear cutter face of a face and side milling cutter, which comprises a base fixed on a support plate of a grinding machine, a support seat is arranged at the upper end of the base in a sliding manner, a positioning plate is fixed on the support seat, a sliding table is arranged at the upper end of the base in a sliding manner, and a rotating hole is formed in the sliding table. A rotating shaft for mounting a cutter is rotationally arranged in the rotating hole, and the rotating shaft reciprocates in the width direction of the sliding table so that cutter teeth of the cutter can be placed on the positioning plate or leave the positioning plate. Compared with the prior art, the cutter is moved to enable the cutter teeth to move left and right along the top end of the positioning plate, the grinding wheel rotating in the moving process grinds the rear cutter faces of the cutter teeth, the cutter is moved to the tooth changing position after grinding is