Device and method for correcting diamond cutting tool

The invention discloses a device and method for correcting a diamond cutting tool. The device comprises a tool-correcting grinding wheel, a base and a driving motor, wherein the tool-correcting grinding wheel is hollow in the middle; the bottom of the tool-correcting grinding wheel is provided with an installation fastener; the tool-correcting grinding wheel is directly fixed on the base through nuts; and the driving motor drives the base to rotate and drives the tool-correcting grinding wheel to rotate at the same time. The method for correcting the diamond cutting tool by adopting the device comprises the following steps: (1) fixing the tool-correcting grinding wheel on the base and completely wetting the tool-correcting grinding wheel; (2) determining the position of a coordinate system on a machining center, and determining the distance from the bottom of the to-be-corrected cutting tool to the surface of the tool-correcting grinding wheel; (3) starting the driving motor, enabling the base to drive the to