Method and apparatus for calibrating a rotating device attached to a movable part of a coordinate measuring device

An arrangement for calibrating a rotary apparatus mounted on a movable part of a coordinate measuring machine, comprising:

• the coordinate measuring machine, wherein the coordinate measuring machine has a base relative to which the movable part is movable by operation of a drive system of the coordinate measuring machine,
• the rotary apparatus, which is mounted with a first part on the movable part of the coordinate measuring machine and which has a second part, which second part is rotatable relative to the first part about an axis of rotation of the rotary apparatus and on which second part a measurement sensor for measuring workpieces is mountable,
• a measuring system of the coordinate measuring machine, which measuring system, during a measurement operation of the coordinate measuring machine for determining coordinates of workpieces, measures movement positions of the movable part,
• a position determining device which is provided in addition to the measuring system of the coordinate measuring machine, which is connected to the base of the coordinate measuring machine and which has a plurality of position sensors arranged thereon for determining a position of the rotary apparatus or of a body connected to the second part,
• a controller of the coordinate measuring machine, which controller is designed to move the rotary apparatus, or the body connected to the second part, by operation of the drive system of the coordinate measuring machine, into a spatial region of the position determining device such that the position of the rotary apparatus, or of the body connected to the second part, relative to the position determining device is determined by means of the plurality of position sensors, wherein the position relative to the position determining device is determined with respect to a plurality of linear degrees of freedom of movement by means of the plurality of sensors, wherein the controller is designed to position the rotary apparatus, or the body connected to the second part, in the spatial region of the position determining device, in different rotary positions of the rotary apparatus, such that, in each of the different rotary positions, the position of the rotary apparatus, or of the body connected to the second part, relative to the position determining device is determined by means of the plurality of position sensors while the rotary apparatus, or the body connected to the second part, is situated in the spatial region of the position determining device, and
• a calibrating device which is designed to calibrate the rotary apparatus in accordance with the determined positions.