Acoustic measurement device for dynamic stiffness of woodworking band saw blade

The utility model provides an acoustic measurement device for dynamic stiffness of a woodworking band saw blade, and the acoustic measurement device is simple in method and accurate and reliable in measurement data. The acoustic measurement device comprises a force hammer and a sound level meter, wherein the force hammer knocks the woodworking band saw blade and is provided with a force sensor; the sound level meter is arranged on one side of the woodworking band saw blade, receives sound waves produced by vibration of the woodworking band saw blade, and converts the sound waves into electric signals; outputs of the force sensor and the sound level meter are connected with a signal conditioning instrument; and an output of the signal conditioning instrument is connected with a signal acquiring and analyzing instrument.