Coordinate measurement instrument and method for its use in concentricity measurements, whereby stepper motors are provided to adjust the angle of inclination of a rotatable feeler head relative to its support axis

摘要

Coordinate measurement instrument has a mandrel (16) in which a feeler head (21) is mounted so that it can rotate about an axis parallel to the mandrel's symmetry axis (17). Mandrel and feeler head are mounted on a carriage (2) that moves along a traverse (1). At least one device (11-13) is provided for direct or indirect alteration of the inclination of the rotation axis of the feeler head. An Independent claim is made for a method for measuring the concentricity of a measurement object (19) such as a drilled hole.