ASME B89.4.10360.2-2008 pdf download

ASME B89.4.10360.2-2008 pdf download.Acceptance Test and Reverification Test for Coordinate Measuring Machines (CMMs) — Part 2: CMMs Used for Measuring Linear Dimensions.
1 Scope This part of ISO 10360 specifies the acceptance tests for verifying the performance of a CMM used for measuring linear dimensions as stated by the manufacturer. It also specifies the reverification tests that enable the user to periodically reverify the performance of the CMM. The acceptance and reverification tests given in this part of ISO 10360 are applicable only to Cartesian CMMs using contacting probing systems of any type operating in the discrete-point probing mode. This International Standard does not explicitly apply to: ⎯ non-cartesian CMMs, however, the parties may apply this part of 10360 to non-Cartesian CMMs by mutual agreement, ⎯ CMMs using optical probing, however, the parties may apply this approach to optical CMMs by mutual agreement. This International Standard specifies performance requirements that can be assigned by the manufacturer or the user of a CMM, the manner of execution of the acceptance and reverification tests to demonstrate the stated requirements, rules for proving conformance, and applications for which the acceptance and reverification tests can be used. Informative For information on non-Cartesian CMMs, see ASME B89.4.22 regarding articulating arm CMMs and ASME B89.4.19 for laser trackers. Informative ASME B89.4.10360.2 provides a well defined set of specifications for a CMM manufacturer to describe their CMM performance and for users to verify the specified performance. This Report does not mandate testing (by either the manufacturer or the user) to verify CMM performance. The amount of testing, and which party will bear the cost of testing, is a business decision and must be negotiated between the two parties. ASME B89.4.10360.2-2008 2 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the cited editions apply. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 10360-1:2000, Geometrical Product Specifications (GPS) — Acceptance and reverification test for coordinate measuring machines (CMM) — Part 1: Vocabulary ISO 14253-1:1998, Geometrical Product Specifications (GPS) — Inspection by measurement of workpieces and measuring equipment — Part 1: Decision rules for proving conformance or non- conformance with specifications ISO 14660-1:1999, Geometrical Product Specifications (GPS) — Geometrical features — Part 1: General terms and definitions ISO/TS 23165:2006, Geometrical product specifications (GPS) — Guidelines for the evaluation of coordinate measuring machine (CMM) test uncertainty International Vocabulary of Basic and General Terms in Metrology (VIM). BIPM, IFCC, IEC, ISO, IUPAC, IUPAP, OIML, 2nd edition, 1993 3 Terms and definitions For the purposes of this part of ISO 10360, the terms and definitions given in ISO 10360-1, ISO 14253-1, ISO 14660-1, ISO/TS 23165 and VIM apply. 3.1 ram axis stylus tip offset L distance (orthogonal to the ram axis) between the stylus tip and a reference point NOTE 1 The reference point is defined by the manufacturer. If no manufacturer-defined reference point is known, the user chooses a reference point close to the probe system mount. NOTE 2 The reference point is usually in or near the probe system.
3.5 repeatability range of the length measurement error R 0 range (largest minus smallest) of three repeated length measurement errors measured by a CMM with zero ram axis stylus tip offset 3.6 maximum permissible error of length measurement E L, MPE extreme value of the length measurement error, E L , permitted by specifications NOTE 1 In this International Standard, L = 0 and L = 150 mm, (default values) are specified. NOTE 2 A maximum permissible error (MPE) as opposed to a maximum permissible limit (MPL) specification is used when the test measurements determine errors; hence, testing an MPE specification requires the use of calibrated artefacts. NOTE 3 The MPE may be expressed in using any of the methods shown in Figure 12, Figure 13, and Figure 14 of ISO 10360-1:2000. 3.7 maximum permissible limit of the repeatability range R 0, MPL extreme value of the repeatability range of the length measurement error, R 0 , permitted by specifications NOTE 1 A maximum permissible limit (MPL) as opposed to a maximum permissible error (MPE) specification is used when the test measurements are not errors; hence, testing an MPL specification does not require the use of calibrated artefacts. NOTE 2 The MPL may be expressed in using any of the methods shown in Figure 12, Figure 13, and Figure 14 of ISO 10360-1:2000. 3.8 dual ram CMM CMM composed of two independent rams and a method to report the coordinate measurements from both rams in a single coordinate system NOTE 1 The two rams usually share part of their measuring range, but this is not required. NOTE 2 The method to establish a single coordinate system may require an alignment procedure. NOTE 3 A dual ram CMM may report the results of each ram in separate coordinate systems; see simplex operating mode.