Automatic detection method for cutter

The invention discloses an automatic detection method for a cutter. The method comprises the following steps of acquiring an actually measured diameter and a theoretical diameter of the cutter, constructing a data model by using the actually measured diameter and the theoretical diameter, obtaining detection parameters through the data model, comparing the detection parameters with a preset threshold value, generating a corresponding control signal according to the comparison result, and according to the control signal, controlling a machine tool to machine, stop the machine tool to change the cutter or stop the machine tool to reinstall the cutter. By adoption of the method, whether swinging of the cutter is normal or not can be automatically detected, whether the cutter is installed wrongly or not can be automatically detected, and therefore the problem that the machining precision is affected due to the fact that the cutter is abnormal is avoided, the secondary confirmation time of the cutter is shortened,