Device and method for measuring the concentricity of an internal toothing of a shaft

A device for measuring concentricity of an internal toothing of a component, the device comprising a determination segment for determining a concentricity deviation, the determination segment comprising:

• a spindle unit including
• a tapping spindle with a gauge gear wheel disposed on a first end of the tapping spindle and configured for tapping the concentricity of the internal toothing of the component, and
• an output spindle for transmitting the tapped concentricity from the tapping spindle to a measuring unit, wherein the output spindle is disposed directly or indirectly on a second end of the tapping spindle opposite the first end;
• a spindle holder for holding and positioning the tapping spindle, the output spindle, or the spindle unit, wherein the spindle holder comprises:
• a spindle holder support for receiving the tapping spindle and the output spindle;
• and
• a spindle holder base for moving the spindle unit,
• wherein the spindle holder base is elastically deformable about an axis of rotation;
• an adjusting element for positioning the gauge gear wheel;
• and
• the measuring unit for comparing the tapped concentricity with reference values.

A device for measuring concentricity of an internal toothing of a component, the device comprising a determination segment for determining a concentricity deviation, the determination segment comprising:

• a spindle unit including
• a tapping spindle with a gauge gear wheel disposed on a first end of the tapping spindle and configured for tapping the concentricity of the internal toothing of the component, and
• an output spindle for transmitting the tapped concentricity from the tapping spindle to a measuring unit, wherein the output spindle is disposed directly or indirectly on a second end of the tapping spindle opposite the first end;
• a spindle holder for holding and positioning the tapping spindle, the output spindle, or the spindle unit, wherein the spindle holder comprises:
• a spindle holder support for receiving the tapping spindle and the output spindle;
• and
• a spindle holder base for moving the spindle unit, wherein the spindle holder base comprises a lever arm construction having support rods that cross one another in a plane extending in an axial direction of a longitudinal axis of the spindle unit;
• an adjusting element for positioning the gauge gear wheel;
• and
• the measuring unit for comparing the tapped concentricity with reference values.