A method for grinding a workpiece includes a first grinding step in which a gear-shaped workpiece and a grinding tool are meshed and rotated, whereby a workpiece tooth surface is ground with a grinding tooth surface, a first correction information generating step in which first correction information is generated by inverting a first deflection waveform, and a second grinding step in which in a state where the workpiece and the grinding tool are meshed and rotated, a rotational speed of the workpiece or the grinding tool is changed based on the first correction information, whereby the workpiece tooth surface is ground with the grinding tooth surface.

A method for grinding a workpiece includes a first grinding step in which a gear-shaped workpiece and a grinding tool are meshed and rotated, whereby a workpiece tooth surface is ground with a grinding tooth surface, a first correction information generating step in which first correction information is generated by inverting a first deflection waveform, and a second grinding step in which in a state where the workpiece and the grinding tool are meshed and rotated, a rotational speed of the workpiece or the grinding tool is changed based on the first correction information, whereby the workpiece tooth surface is ground with the grinding tooth surface.