Novel ripple disc cutting device

The invention discloses a novel ripple disc cutting device, belonging to agricultural machine; an eccentric shaft is mounted on an upper rotary sleeve in an inserted manner, the eccentric shaft is locked on the upper rotary sleeve via an upper set screw, a tapered limit block provided with a lower set screw is sleeved at the lower side portion of the eccentric shaft, the tapered limit block is locked on the eccentric shaft via the lower set screw, a lower rotary sleeve provided with a tapered through hole on the sidewall thereof is sleeved on the external portion of the tapered limit block, a tapered portion of the tapered limit block is positioned within the tapered through hole of the lower rotary sleeve, fit clearance is formed between two tapered sidewalls of the taper through hole and two taper side faces of the tapered limit block, and an elastic floating ripple cutting disc assembly is mounted at the rear side portion of the lower rotary sleeve; the ripple disc cutting device has simple and reasonable