Split type conical drill bit convenient to install

The utility model discloses a split type conical drill bit convenient to install. The split type conical drill bit comprises a milling drill bit body, a chip removal groove, milling teeth, a connecting rod, a positioning groove, a connecting disc, a locking screw, a screw hole, a butt joint sleeve and a limiting sleeve. The milling drill bit has the advantages that the milling drill bit in the device is made of high-hardness alloy materials and is of a conical structure, the milling teeth of a spiral structure are arranged on the outer wall of the milling drill bit, the diamond coating is integrally sprayed on the outer wall of the milling drill bit, the milling efficiency of the drill bit is improved through the milling teeth, and the service life of the drill bit is prolonged. A positioning groove is formed in the side wall of a connecting rod in the device, an inclined notch is formed in a limiting sleeve, a locking rod is slidably connected into the notch, a rack is arranged at the bottom of the locking r