The selection of grinding gear grinding wheel can refer to the following principles：
1. The materials of the gears to be ground are usually various grades of quenched alloy steel and high-speed steel, and the materials of the grinding wheels should be white corundum, chrome corundum, or a mixed abrasive of the two.
2. The higher the hardness of the gear tooth surface to be ground, the smaller the surface roughness parameter value, the softer the hardness of the grinding wheel and the finer the particle size. It is better to use grinding wheels with different particle sizes and hardness for rough grinding and fine grinding respectively.
3. When grinding with a shaped grinding wheel, in order to avoid surface burns, a softer grinding wheel should be selected; using a CBN grinding wheel can greatly extend the life.
4. When dry grinding, the heat dissipation conditions are poor, the hardness of the selected grinding wheel should be soft, the particle size should be coarse, and the structure should be loose, but its influence on the roughness of the gear tooth surface should also be considered.
5. When grinding teeth with a worm grinding wheel, in order to ensure the accuracy of the tooth shape, the smaller the modulus of the gear, the finer the particle size of the grinding wheel and the higher the hardness.
All kinds of typical gear grinding machines have their own recommended grinding wheels, and you can refer to the corresponding instructions when selecting them.
