Method for grinding of bevel gears

A method having the following steps:

• grinding of bevel gears,
• wherein the respective bevel gears have a straight toothing to be ground,
• wherein the grinding is carried out with a disk-shaped grinding tool by discontinuous generating grinding using a predetermined rolling ratio,
• wherein a grinding face of the grinding tool, which rolls during the grinding with teeth of the straight toothing of a respective bevel gear, forms a section of a hollow cone inner surface, and
• wherein a respective longitudinal crowning is generated on the respective straight toothing of the respective bevel gears by the grinding using the cutting face forming the section of the hollow cone inner surface,
• wherein the grinding tool is a dressable grinding tool and dressing of the grinding tool is carried out,
• wherein at least one first bevel gear of the bevel gears is ground before the dressing by the dressable grinding tool and
• wherein at least one second bevel gear of the bevel gears is ground after the dressing by the dressable grinding tool,
• wherein during the dressing of the dressable grinding tool, a radius of the grinding tool is reduced by the dressing from a first radius (r01) to a second radius (r02),
• wherein the cutting face of the grinding tool forming the section of the hollow cone inner surface is inclined before the dressing by a first hollow cone angle (γ1) and is inclined after the dressing by a second hollow cone angle (γ2),
• wherein a radius of curvature (rkr) of the longitudinal crowning is constant before and after the dressing, and
• wherein the following applies:
• γ2=arcsin(r02/r01·sin γ1);
• with r01 as the first radius of the grinding tool,
• with r02 as the second radius of the grinding tool,
• with γ1 as the first hollow cone angle, and
• with γ2 as the second hollow cone angle.