Roughness measurement sensor, an apparatus with a roughness measurement sensor and the respective use thereof

An apparatus comprising:

• a roughness sensor system for measuring the surface roughness of the tooth flanks of gearwheels;
• the system including a roughness measurement sensor comprising:
• a sliding element defined by a skid and a sensor tip, wherein the sensor tip is located near an extremal end of a sensor arm, the sensor arm being mounted in a lever configuration and including a longitudinal extension extending parallel to a longitudinal axis of the roughness measurement sensor, wherein:
• the skid, as viewed in a plane of intersection perpendicular to the longitudinal axis, is laterally adjacent to the sensor tip;
• the sensor tip, as viewed in a cross-sectional plane perpendicular to the longitudinal axis, defines a lowermost contact point,
• the skid, as viewed in said cross-sectional plane, has a curved progression including a lowermost sliding point, and
• the roughness measurement sensor is configured to move along a line of a surface with the sensor tip in a direction extending parallel to the longitudinal axis, wherein the sliding point of the skid is laterally offset from the line.

A method comprising:

• measuring a surface roughness of tooth flanks of gear wheels using a roughness measurement sensor, wherein the roughness measurement sensor comprises:
• a sliding element defined by a skid and a sensor tip, wherein the sensor tip is located near an extremal end of a sensor arm, the sensor arm being mounted in a lever configuration and including a longitudinal extension extending parallel to a longitudinal axis of the roughness measurement sensor, wherein:
• the skid, as viewed in a plane of intersection perpendicular to the longitudinal axis, is laterally adjacent to the sensor tip;
• the sensor tip, as viewed in a cross-sectional plane perpendicular to the longitudinal axis, defines a lowermost contact point,
• the skid, as viewed in said cross-sectional plane, has a curved progression including a lowermost sliding point, and
• the roughness measurement sensor is configured to move along a line of a surface with the sensor tip in a direction extending parallel to the longitudinal axis, wherein the sliding point of the skid is laterally offset from the line;
• and
• the method further comprises guiding the longitudinal axis of the roughness measurement sensor in a flat manner in a profile direction along a tooth flank.