Damping device of numerical control cutting machine

The invention relates to the technical field of cutting machine, in particular to a damping device of a numerical control cutting machine. The damping device comprises a cutting device; cutting devicebases are fixedly arranged on two ends of the cutting device; the bottom of each cutting device base is fixedly provided with a damping base; a first groove is formed in the top of each damping base;opposite sides of the damping bases are fixedly provided with vibration-prevention bases; an electric telescopic rod is fixedly arranged on the bottom of each vibration-prevention base; one end of each electric telescopic rod is fixedly provided with a sliding block; a second groove is formed in the top end of each sliding block; top covers are fixedly arranged on two sides of the top of each vibration-prevention base; a second sliding groove is horizontally formed in each top cover; a cover plate is fixedly arranged in each second sliding groove; the end, which is close to the inner part ofthe corresponding second sl