Precise graphite piece machining system

The utility model relates to the technical field of graphite processing, in particular to a precise graphite piece processing system, which overcomes the defects that graphite has collapsing risk due to overlarge graphite clamping force, flying dust generated by graphite cuttings and waste collection are not emphasized, and comprises a bottom plate, and a back plate and a connecting plate are respectively welded at two ends of the bottom plate. A first screw is welded to one side of the back plate, an adjusting knob is in threaded connection with the surface of the first screw, a sleeve is clamped to one end of the adjusting knob, a baffle is welded to one end of the sleeve, supporting plates are welded to the two ends of the baffle, second screws are in threaded connection with the outer sides of the supporting plates, and limiting plates are connected to the ends of the second screws through rotating shafts. According to the graphite piece machining device, when a graphite workpiece is clamped, under the co