Abstract: A method for grinding a toothing of a workpiece with a grinding tool in a grinding machine, wherein during the engagement of the grinding tool in the toothing to be ground, a first and a second machine parameter are measured, and both machine parameters measured are compared with a predefined stored value, wherein a signal is output if at least one of the machine parameters exceeds or falls below the predefined stored value, taking account of a tolerance range. To enable a conclusion to be drawn about the course of the grinding process by monitoring relevant variables, at least one of the machine parameters contains periodic signal components, wherein the signal components are broken down by a frequency analysis into the individual frequency components and the frequency components are used, with regard to their frequency and/or amplitude, for comparison.

Abstract: A method for dressing a multi-thread grinding worm for the grinding of toothings, wherein the grinding worm includes a plurality of worm threads that are each dressed by a dressing tool with at least one dressing stroke to provide the grinding worm with a desired profile. The method includes: a) dressing a first worm thread, wherein at least one process parameter is measured and recorded during the dressing process; b) dressing a further worm thread, wherein the process parameter is measured and recorded during the dressing process; c) after dressing all worm threads: combining the recorded data of the process parameter; d) comparing the combined data of the process parameter with data stored in a machine controller and checking whether the combined data are within a predefined admissible range; e) outputting a signal if the combined data are not within the predefined admissible range.