Method for grinding a toothing or a profile of a workpiece

A method for grinding a toothing or a profile of a workpiece by means of a grinding tool in a grinding machine,

• wherein the grinding tool is received on a tool spindle and the tool spindle is rotated by means of a first drive motor,
• wherein the workpiece is received on a workpiece spindle and the workpiece spindle is rotated by means of a second drive motor,
• wherein at least during the engagement of the grinding tool in the toothing to be ground or in the profile to be ground, a first and a second machine parameter are measured and both measured machine parameters or a variable derived from the machine parameter are compared with a predetermined stored value, wherein a signal is output if at least one of the machine parameters or the variable derived therefrom, taking into account a tolerance band, exceeds or falls below the predetermined stored value,
• wherein at least one of the machine parameters or the variable derived from this machine parameter contains periodic signal components, wherein these signal components are broken down into the individual frequency components by a frequency analysis and the frequency components being used for comparison with regard to their frequency and/or their amplitude.