scope:

Objective and scope

This guideline is intended to give specifications for coordinate measuring machines and define methods for the testing of these instruments. Comparability of the characteristics of coordinate measuring machines with tactile and optical sensors is ensured.

The scope includes coordinate measuring machines of any type with optical one-, two-, or three-dimensional distance sensors. Sensors may allow swingand- tilt movements by means of accessories. The functioning and specifics of the sensors are explained.

The methods for acceptance testing and reverification of error of indication for size measurement and probing error in optical distance sensors are defined in close harmonisation with DIN EN ISO 10 360-2. In its present form, the DIN EN ISO 10 360 series of standards is dominated to a large extent by tactile sensors. Consequently, this guideline provides the necessary additional specifications for the use of optical sensors:

• standards to be used as an alternative to gauge blocks

• comparability of the characteristics where alternative standards are used (having, e.g., spherical boundary surfaces)

• comparability of the characteristics where probing strategies differ for different sensors (different number of points, differences in coverage of the elements to be probed, use of accessories such as swing-and-tilt equipment)

• definition of the characteristics for varying operating conditions

• guidance on how to take into account influencing quantities such as environmental parameters, mathematical filters, and surface characteristics of the artefacts

OSIS (Optical Sensor Interface Standard) working groups draft guidelines concerning the specification and testing of optical sensors. These guidelines are used in the cooperation between sensor and instrument manufacturers for the purpose of system integration. No reference is made to them between manufacturers and users when specifying and testing coordinate measuring machines.