Diamond chamfering milling cutter

The utility model is applicable to the technical field of chamfering milling cutters, and provides a diamond chamfering milling cutter which comprises a handle, a milling cutter clamped on the handle and an inserting rod inserted in the milling cutter, the insertion rod is in insertion fit with the knife handle; the cutter handle is of a hollow structure. A fixing plate is arranged in the cutter handle; the bottom surface of the fixed plate is fixedly connected with a clamping block; the connecting pipe and the first through hole are both matched with the inserting rod in an inserting manner; the milling cutter comprises a connecting part and a milling part, the clamping block is clamped and matched with the clamping groove; and the insertion rods are in insertion fit with the second through holes. According to the device, through the hollow structure design of the cutter handle, milling cutters of different sizes can be conveniently placed, the milling cutters of different sizes can be replaced by clamping a