Tooling Surface Polish Impact on First Article Inspection Accuracy
Uncalibrated optical scans on mirror-polished plastic introduce up to fifteen micrometers of false elevations, ruining First Article Inspection accuracy.
ISO 10360 8
Meaning
International standards define the testing procedures for coordinate measuring machines equipped with non-contact optical sensors. Compliance with iso 10360 8 ensures that laser scanners or structured light systems used to inspect molded parts provide reliable data. The document specifies how to measure probing errors and structural errors in the metrology system.
It applies to both single-point measurements and point cloud acquisitions.
Sensor Calibration
Testing involves the measurement of calibrated artifacts to determine the precision of the light source and receiver. In the context of iso 10360 8, these artifacts are typically spheres or flats with known dimensions. The results quantify the noise level and the ability of the sensor to capture fine surface details.
Metrology Accuracy
Precise measurement of complex geometries depends on the alignment between the machine axes and the optical head. Adoption of iso 10360 8 allows a quality lab to state the uncertainty of its measurements with confidence. This certainty is essential when checking the warp and shrink of plastic housings against a CAD model.
Verification against a known standard reduces the risk of shipping parts that fail to assemble correctly. Every micron matters in high precision automotive connectors.
Error Detection
Identifying deviations in the measurement system prevents the acceptance of bad parts. The tests described in iso 10360 8 reveal whether the optical sensor is affected by the ambient light or the reflectivity of the polymer surface. Understanding these limitations prevents false passes.