Dressing and conditioning resin-bonded diamond grinding wheel

DETAILED DESCRIPTION We claim: 1.
A method for simultaneously dressing and conditioning a resin-bonded diamond grinding wheel during grinding which comprises contacting the surface of said resin-bonded diamond grinding wheel with a wetting liquid which wets the face of the resin component of said wheel surface forming a film thereon, grinding the wetted wheel with a polycrystalline ceramic body selected from the group consisting of silicon carbide which ranges in density from about 80% to about 100% of the density of silicon carbide and silicon nitride which ranges in density from about 80% to about 100% of the density of silicon nitride generating chips of said ceramic body which adhere to said wetted resin face forming a slurry layer thereon and grinding the resulting wheel with a workpiece.
2.
A method according to claim 1 wherein said polycrystalline body is silicon carbide.
3.
A method according to claim 1 wherein said polycrystalline body is silicon nitride.
4.
A method according to claim 1 wherein said wetting liquid is composed of water and lubricating agent.




Description:
The present invention relates to the dressing and conditioning of a resin-bonded diamond grinding wheel.
A grinding wheel is trued by removing small amounts of material from the surface of a rotating wheel to maintain concentricity.
Otherwise, due to unbalance, the wheel chatters at the high grinding speed and unsatisfactory performance results.
Dressing is a much finer operation than truing, wherein the tips of the abrasives are subjected to delicate microcleavage fracture to provide sharp fracture facets to the grits which remove material efficiently in subsequent grinding by sharp cutting action of the grits.
In machine grinding operations, it is necessary to dress the face of the grinding wheel to assure the proper shape of the part to be ground (the workpiece) and to prepare or restore the surface of the grinding wheel to optimize its cutting ability and to insure that the quality of finish imparted to a workpiece is high