Diamond coating hard tool bit

• Main Authors: SHAO YONGJIE, XIA JIAQI, HUI WENGANG
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2023
• Subjects: BORING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING; TURNING

The utility model relates to the field of mechanical tool accessories, and discloses a diamond coating hard tool bit, which comprises a hollow diamond coating tool bit base rod and a drilling cutting part formed by surrounding four groups of diamond coating hard substrates on the diamond coating tool bit base rod, the diamond coating tool bit base rod is connected with a diamond coating hard base plate attached to the diamond coating tool bit base rod through four sets of base plate connecting columns, and a cutting part operating mechanism used for driving the drilling cutting part to expand is arranged at the position, corresponding to the upper portions of the four sets of base plate connecting columns, of the diamond coating tool bit base rod. The base plate connecting columns are connected with reset springs used for resetting the diamond coating hard base plates in a sleeving mode, the four sets of diamond coating hard base plates can be synchronously expanded outwards, drilling cutting parts with diffe