Including main tool holder, front end tool groove, rear end shank groove, rotating circular groove, bead slide chute, bead bar, rotating table, upper clamping block, lower clamping block, tool clamping table, magnet block, and stopper , rack moving block, adjusting auxiliary handle. According to the scientific encyclopedia of blade holders, the blade holder is a device that can quickly hinge the blade on the cutterhead and drive the blade to rotate with the cutterhead. The basic components of the CNC blade holder are the main tool holder, the front tool groove, the rear shank groove, the rotating circular groove, the bead chute, the bead, the rotating table, the upper clamping block, the lower clamping block, the tool clamping table, the magnet block, and the stopper. , rack moving block, adjusting auxiliary handle. The holder is a mechanical device used to fix the bursting disc.