Method and device for carrying out online detection on abrasion of grinding wheel by using air flow on grinding wheel

The invention relates to a method and a device for carrying out online detection on the abrasion of a grinding wheel by using an air flow on the grinding wheel, and the method is implemented through the following steps: carrying out real-time online detection on the dynamic pressure of an air flow on the surface of the grinding wheel by using a pressure sensor; carrying out analysis and calculation on the variation of the dynamic pressure of the air flow so as to obtain an abrasion loss amount of the grinding wheel in the process of grinding and then obtain a compensatory feed amount of the grinding wheel, then sending a compensatory feed instruction by virtue of a numerical control machine tool system so as to complete the compensatory feed of the grinding wheel; and after the compensatory feed of the grinding wheel is completed, carrying out micro-adjustment on the position of the sensor by using a micro-adjustment mechanism so as to ensure the sensitivity and accuracy of detection on the pressure of the ai