Method for polish grinding of gears with a polish grinding tool in a gear grinding machine

Method for polish grinding of gears with a polish grinding tool in a gear grinding machine, comprising the steps of:

• a) Performing the following steps on a reference gear or test gear:
• a1) Measuring at least one tooth gap of the finish ground, but not yet polish ground gear, wherein the position of the surface of the flanks is measured at a number of points on the flanks (measuring points) on both opposing flanks of the tooth gap, both above the tooth height and above the tooth width;
• a2) Polish grinding the gear with the polish grinding tool, wherein the polish grinding tool is fed to the gear with a first initial radial infeed;
• a3) Measuring the surface of the flanks to determine the position of the surface at the number of points on the flanks;
• a4) Comparing the measured position of the surface at the number of points on the flanks according to step a3) with the measured position of the surface at the number of points on the flanks according to step a1);
• a5′) If the comparison according to step a4) shows that the position of the surface at the number of points on the flanks according to step a3) has changed relative to the measured position of the surface at the number of points on the flanks according to step a1) at all measured points on the flanks:
• Continue with step b);
• a5″) If the comparison according to step a4) shows that the position of the surface at the number of points on the flanks according to step a3) has not yet changed with respect to the measured position of the surface at the number of points on the flanks according to step a1) at least at one of the measured points on the flanks:
• Storing of the measured points on the flanks where a change has already occurred, as well as the necessary radial infeed for that,
• Repeating steps a2), a3), and a4), wherein with each repetition the polish grinding tool is fed to the gear wheel with a radial infeed increased by one increment, wherein continuation with step b) takes place if, after a repetition, a change has occurred at all measured points on the flanks;
• b) Determination of at least one correction value and/or at least one correction function for the subsequent polish grinding from the determined radial infeeds that were required for a change at all measured points on the flanks;
• c) Polish grinding of gears based on the determined correction value and/or the determined correction function.