Chamfering machine

The utility model relates to a bevelling machine, which comprises a motor, a machine body, a transmission mechanism, a feed mechanism, and a workpiece clamping mechanism. The utility model is characterized in that one gear of an intermediate shaft is engaged with a gear of a shaft of the motor. The other gear of the intermediate shaft is engaged with a gear of a main shaft. A sliding gear is arranged on an auxiliary shaft which is arranged in the coaxial line with the intermediate shaft, and is connected with a clutch which can be combined with or separated from the intermediate shaft or the machine body. A feed gear is engaged with the sliding gear, and is connected with a thread section of the main shaft through an elastic connecting device, wherein, the number of the teeth of the gear of the intermediate shaft is the same with the number of the teeth of the sliding gear. The number of the teeth of the feed gear is one less than the gear of the main shaft. The utility model can realize automatically feed and retract.