Patent ID: 7473163

Claim:
A cutter grinding device comprising: a housing having a top surface; a motor being mounted in the housing and having a drive shaft protruding out from the top surface of the housing; a grinding wheel being attached to and driven by the drive shaft and having a grinding disc having a top and an edge; and a front grinding portion being formed from the grinding wheel at an angle from the edge of the grinding disc; a holding cap being attached to the top surface of the housing, enclosing the grinding wheel and having a top; a front; a front hole being laterally defined in the front of the holding cap on a front axis coinciding with the front grinding portion of the grinding wheel; a disc-edge hole being defined in the top of the holding cap on a disc-edge axis coinciding with the edge of the grinding disc; and a disc-top hole being defined in the top of the holding cap on a disc-top axis coinciding with the top of the grinding disc; multiple brackets being mounted respectively in the front, disc-top and disc edge holes in the holding cap and each bracket having an outer surface; a working hole being defined axially through the bracket and aligning with the corresponding hole in the holding cap; and at least one pair of holding blocks being formed on and protruding in pairs from the outer surface of the bracket and each having an engaging side and a height, wherein the engaging sides of each pair face one another; and the height of the holding blocks of the bracket mounted in the front hole is larger than the height of the holding blocks on the brackets mounted in the disc-top and disc-edge holes; and a clamping assembly being selectively mounted into one of the brackets for holding a milling cutter.