Self-centering micro drill without chisel edge

• Main Authors: YOU QINGREN, CHEN AIJUN
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: BORING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING; TURNING

The utility model discloses a chisel-edge-free self-centering micro drill which comprises a drill bit body, drill edges are arranged at the top of the drill bit body at equal intervals, a drill core point is arranged in the center of the top of the drill bit body, edge cutter faces are arranged on the outer walls of the tops of the drill edges, and chip grooves are formed in the outer wall, between the drill edges, of the drill bit body. A fastening frame is arranged in the center of the bottom end of the drill bit body, a fastening rod is installed in the fastening frame, the bottom end of the fastening rod extends to the outside of the fastening frame, and the top end of the fastening rod makes contact with the bottom end of the drill bit body. According to the drill bit, the drill bit body can be disassembled, so that the drill bit body can be disassembled and maintained conveniently, scraps accumulated in a drill hole are reduced, the drilling effect of the drill bit body on an object is guaranteed, a chi