During the long-term use of the chamfering machine, affected by factors such as processing environment, operating specifications, and component wear, various faults are likely to occur. Timely troubleshooting and solving faults are the key to ensuring the smooth progress of production. The following are common faults and corresponding solutions: First, chamfering precision deviation, which is manifested as inconsistent chamfering angles and excessive dimensions. Troubleshooting direction: first check whether the tool is worn or installed offset. If the tool is worn, it needs to be replaced; if the installation is offset, re-calibrate the tool position; second, check whether the workpiece positioning device is loose, fasten the positioning screws and re-adjust the positioning parameters; finally, check whether the feeding speed is too fast, and appropriately reduce the feeding speed to improve processing stability. Second, excessive tool wear is mainly caused by mismatched tool material and workpiece material, excessive cutting speed, and insufficient cooling. Solutions: select suitable alloy tools according to the workpiece material (such as tungsten steel tools for processing hard metals); reasonably adjust the cutting speed and feed rate to avoid overloaded cutting; check whether the cooling system is working normally, supplement cooling fluid and clean the blockage of the cooling pipeline. Third, severe vibration during equipment operation may be due to loose anchor screws, worn spindle bearings, or insufficient workpiece clamping. Solutions: fasten the equipment anchor screws and adjust the equipment level; check the spindle bearing, replace the bearing and supplement grease if it is severely worn; adjust the pressure of the clamping mechanism to ensure the workpiece is firmly fixed. Fourth, feeding jamming, which is manifested as the workpiece cannot be fed smoothly or the feeding is uneven. Troubleshooting: clean the metal chips and impurities in the feeding mechanism, check the wear of the feeding roller, and replace the severely worn roller; adjust the tension of the chain or belt and supplement lubricating oil; check the operation status of the feeding motor, and repair or replace the motor in time if it fails. Fifth, hydraulic/pneumatic system faults, such as oil leakage, air leakage, and insufficient pressure. Solutions: check the seals of pipeline joints and replace aging seals; supplement hydraulic oil/compressed air and clean the filter element; check the working status of the hydraulic pump/air pump and repair or replace faulty components. It is recommended that operators regularly learn troubleshooting knowledge and strictly operate in accordance with the operating procedures to reduce the probability of faults.