Sheet grooving machine

The utility model provides a grooving machine with a sheet. The grooving machine can guarantee the machining accuracy of a workpiece, and conveniently correct the planeness of the worktable surface and the parallelism between the worktable surface and a base, and a worktable does not need to be detached. The grooving machine comprises a base, the worktable, a beam and a knife rest, wherein the worktable is arranged on the base; the beam is arranged on the base and is positioned above the worktable; the knife rest is arranged on the beam; the beam is arranged on the base in a way of moving relative to the base in the z-axis direction; a beam fixed frame is arranged on the beam in a way of moving relative to the beam in the y-axis direction; and the knife rest is arranged on the beam fixed frame in a way of moving relative to the beam fixed frame in the x-axis direction.