Counter bore chamfer finish machining device

The utility model provides a counter bore chamfering finish machining device, which belongs to the technical field of counter bore chamfering and comprises a base, positioning grooves are equidistantly arranged on the outer walls of two sides of the base, two connecting plates are slidably mounted on the outer walls of the two sides of the base through the positioning grooves, and the two connecting plates are symmetrically arranged on the base. Four angle shafts are fixed to the two sides of the surfaces of the front ends of the two connecting plates correspondingly, and a supporting inclined rod is rotationally installed in each angle shaft. According to the counter bore chamfer finish machining device, after a user fixes the machine base to a proper position through bolts, the user fixedly connects the bottom plate with the ground through expansion bolts, bevel angle supporting can be conducted on the two sides of the machine base through cooperation between the bottom plate and the supporting inclined rod