Tool wear detection method based on minimum enclosing rectangle

The invention discloses a tool wear detection method based on a minimum enclosing rectangle, relates to a tool wear detection method, and aims to solve the problems that by the existing method for realizing tool damage detection, an acquired image cannot be identified due to relatively high environmental impact, the wear amount of a tool cannot be accurately obtained, and the maximum service life of the tool cannot be evaluated. The detection method mainly comprises the following steps: 1, acquiring a tool wear image by an image acquisition system, and transmitting the image to a computer; 2, performing image preprocessing on the acquired wear image; 3, calculating the minimum enclosing rectangle of a tool wear region on the preprocessed image by using a minimum enclosing rectangle algorithm, and calculating the width of the minimum enclosing rectangle; and 4, comparing the calculated width of the minimum enclosing rectangle of the tool wear region with the width of the minimum enclosing rectangle of a blade