Blade type cutter clamping device

The utility model discloses a cutter grain type cutter clamping device which comprises a cutter installation cylinder, an installation cavity is formed in the cutter installation cylinder, four evenly-distributed first containing grooves are formed in the bottom end of the inner surface of the cutter installation cylinder, a clamping plate is movably connected in each first containing groove, anda push rod is fixedly connected to one side of each clamping plate. The tool is inserted from the bottom of the mounting cavity until the tool makes contact with the buffer cushion, the two-way threaded rod is rotated to enable the two pushing threaded sleeves to move relatively, the pushing plate is pulled to push the top end of the V-shaped clamping rod towards the two sides, the V-shaped clamping rod rotates around the fixing rod, the bottom of the V-shaped clamping rod clamps the tool, and bottom positioning of the tool is achieved; the rotating ring is rotated to enable the annular rack to be meshed with and rota