The invention relates to the technical field of blade strength detection and discloses an aero-engine blade strength detection device and method.The device comprises a
machine body, a
rotating disc is arranged on the top wall of the
machine body, a mounting groove is formed in the top wall of the
machine body, and a pressure
assembly used for driving the
rotating disc to descend is arranged at the top of the
rotating disc; and a connecting plate is fixedly installed at the top end of the pressure
assembly, a ball head is fixedly installed in the middle of the top end of the connecting plate, a ball head sleeve is arranged outside the ball head in a sleeving mode, and a carrying plate is fixedly arranged outside the ball head sleeve in a sleeving mode. By adjusting the angle of the pressing rod and avoiding of the limiting
assembly, the
steel ball can be perpendicular to the detection face, more accurate detection can be completed on the concave face area of the blade, detection is not limited by the concave face area of the blade, the
steel ball can be adsorbed and fixed when the limiting assembly avoids, and the detection accuracy is improved. The
steel ball can be prevented from being separated from the pressing rod when the pressing rod ascends, and follow-up normal use is guaranteed.