Quantifying Time Dependent Viscoelastic Deformation during Coordinate Metrology Audits
Unmanaged viscoelastic creep under metrology clamping fixtures consumes up to forty percent of engineering tolerances, requiring documented dwell periods.
ISO 10360-2
Meaning
Standardized evaluation of coordinate measuring machines ensures the comparability and traceability of dimensional measurements across global supply chains. The international standard known as iso 10360-2 specifies the acceptance and reverification tests for coordinate measuring machines that measure linear dimensions. Metrologists use this framework to verify that a machine performs within the specified maximum permissible error limits.
This procedure involves a series of physical measurements designed to challenge the positioning accuracy of each orthogonal axis.
Verification Procedure
Testing involves measuring a series of five different lengths in seven different directions within the machine volume. Under iso 10360-2, each length is measured three times using a calibrated artifact such as a step gauge or gauge blocks. This rigorous sampling pattern ensures that the volumetric performance is assessed across all axes of motion.
Acceptance Criteria
Pass or fail decisions depend on whether the measured errors fall within the manufacturer’s specified limits of error. The criteria defined in iso 10360-2 require that all measurements comply with the maximum permissible error of length measurement. Failing these tests necessitates machine calibration or structural maintenance.
Metrological Impact
Adherence to this protocol reduces measurement uncertainty in manufacturing environments. By employing iso 10360-2, factories can guarantee the accuracy of their quality control processes. This standard establishes a common baseline for comparing machines from different manufacturers.