Method and device for optical gear measurement

The method according to claim, 1 wherein

• the modeling of profile segments from the measuring points of the flank groups, wherein a profile segment is assigned to each flank group, comprises a plausibility check having one or more of the following method steps:
• creating a left averaged compensation profile segment from profile segments of left flank groups and checking a deviation of at least one profile segment of a left flank group from the left averaged compensation profile segment;
• checking a deviation of at least one profile segment of a left flank group from another profile segment of a left flank group;
• creating a right averaged compensation profile segment from profile segments of right flank groups and checking a deviation of at least one profile segment of a right flank group from the right averaged compensation profile segment;
• checking a deviation of at least one profile segment of a right flank group from another profile segment of a right flank group;
• checking a deviation of the left averaged compensation profile segment from the specified nominal geometry;
• checking a deviation of the right averaged compensation profile segment from the specified nominal geometry;
• checking a deviation of at least one profile segment from the predetermined nominal geometry and/or from a compensation geometry, wherein the compensation geometry has been determined from the profile segments of the flank groups;
• and
• checking a deviation of a first profile segment of a tooth of the toothing of a first measurement from a second profile segment of the same tooth of a second measurement.

A device,

• having a measuring device, wherein the measuring device comprises an optical measuring system,
• having a holder for holding a component,
• having a control and evaluation unit, adapted for carrying out a method including the following steps:
• providing a component having a toothing with a predetermined nominal geometry;
• providing the measuring device;
• measuring the toothing of the component using the optical measuring system, wherein measuring points are detected;
• and
• evaluating measuring points including at least the following steps:
• grouping of the measuring points into flank groups by filtering;
• modeling of profile segments from the measuring points of the flank groups, wherein a profile segment is assigned to each flank group;
• and
• determining one or more geometric parameters of the toothing on the basis of the profile segments.