Grinding wheel with internal flow supply structure

The present invention discloses a grinding wheel with an internal flow supply structure, and the grinding wheel is installed on a drive shaft having a supply hole, and comprises a permeable layer, a multi-porous body, a multi-porous abrasive layer, a first impermeable layer, and a second impermeable water. The multi-porous body includes a central mandrel hole located parallel to the outer circumferential surface of the wall surface of the mandrel hole and a first side and a second side perpendicular to the outer circumferential surface, and the permeable layer is bonded to the mandrel hole. The first impermeable layer and the second impermeable layer respectively bonded to the first side and the second side and each extending to cover the permeable layer and the multi-porous abrasive layer; wherein the first impermeable layer and the second impermeable layer are respectively bonded to the first and second sides, The fluid introduced from the supply hole of the drive shaft is centrifugally driven through the p