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Description of 20/30386415 DC 2020This document specifies the acceptance tests for verifying the performance of an optical CMS (Coordinate Measuring System) when measuring lengths as stated by the manufacturer. It also specifies the reverification tests that enable the user to periodically reverify the performance of the optical 3D CMS. An optical 3D CMS that this standard intends to specify is a contactless area measuring sensor delivering 3D data in several individual single views by an optical measuring principle and transforming it into a common coordinate system. Typical optical measuring principles are pattern projection, fringe projection, and project-and-sweep a scanned line, or similar, delivering single views without assistance of external information related to position and orientation of the objects to be scanned relative to the CMS. Typical registration principles are based on a best fitting of commonly captured position information across at least two different single views, either or both by using reference targets or surface features of the objects to be scanned. This standard applies to verification of the measuring performance of CMSs in case the surface characteristics (e.g. glossiness, colour) of the object to be scanned are restricted and within a cooperative range. This standard does not explicitly apply to other types of CMSs, including those standardized by the other parts of ISO 10360 or other standards. In the list below, a metrological moving carrier is a mover equipped with scales measuring the position and/or orientation of the probing system, to be used as essential information for the determination of the measurement result.
Parties may apply this part of 10360 to the above or other type CMSs by mutual agreement. This part of ISO 10360 specifies:
Note 1 Annex E describes possible limitations with regard to less cooperative surface characteristics, e.g. colour, glossiness and roughness, and provides a suggested test that may give CMS users an idea of how representative the maximum permissible error would be when measuring their specific industrial part. Note 2 The optical 3D CMS can be moved and positioned by a manually or automated moving unit. The position and/or orientation can be used as additional information for the registration. Note 3 The acceptance and reverification tests are designed to mimic real but simple measurements occurring in practice, subject to the rated operating conditions and the testing procedures. The user is advised to consider the influence of additional or omitted conditions and/or procedural steps when applying the test results according to this standard to predict the performance of an actual CMS.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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