Shock-absorbing structure for cutting tools

The invention provides a shock-absorbing structure for cutting tools, and the shocking-absorbing structure comprises a shock absorber and a cutter bar, wherein a threaded section is formed on the surface of the shock absorber; the inside of the cutter bar is provided with a bag-shaped groove, and an internal thread (by which the shock absorber is in threaded connection with the inside of the bag-shaped groove and seals off the bag-shaped groove) is formed on the wall of the bag-shaped groove; and the internal thread of the bag-shaped groove and the threaded section of the shock absorber are mutually meshed, and a gap exists between the internal thread and the threaded section, so that the shock absorber inertially alternately dashes against the internal thread in a relative position along with the chattering produced when the cutter bar carries out cutting, thereby achieving the purpose of attenuating the shock of the cutting tools.