Chamfering machine is a by the body, outside, chamfering workbench, positioning platform, inside chamfer workbench, an internal Angle rotating cutter, outside the rotation, motor and transmission mechanism of the cutting tools, on the level of upper body vertical installed inside and outside, turn head, set up the bottom axis transmission mechanism, the vertical lifting the internal chamfer inside head Lou hole in the center of the table with an internal Angle rotation in segment, Is located in the outside, turn head upper part positioning the audience side grooves and the outside, outside of workbench of open hole of the cutting tools, the combination of form outside, turn head to show on the face of exterior Angle cutter hole, outside, chamfering workbench and set between the body’s level of upper lifting gear, make outside, chamfering vertical lifting table, so that the exterior Angle cutting head Lou hole and angular rotation cutting head can be adjusted.