Sawing-punching integrated preparation device and method for decellularized bone regeneration and repair material

The invention discloses a sawing-punching integrated preparation device and method for a decellularized bone regeneration and repair material. The sawing-punching integrated preparation device comprises a pneumatic quick-change clamping device, a two-shaft linkage workbench, a bone sawing machine, a middle conveying device, a punching machine and a bone grain screening device, wherein the pneumatic quick-change clamping device adapts to clamping of large bones of animals with different shapes and sizes, and the two-axis linkage workbench drives the pneumatic quick-change clamping device to perform two-dimensional translation; the bone sawing machine is used for sawing animal big bones into animal bone slices, and adjusting the thickness of the bone slices; the middle conveying device conveys the animal bone slices to the punching machine for punching, and has a function of screening qualified animal bone slices; the punching machine punches the animal bone slices into bone grains and conveys the bone grains t