TECHNICAL ISO/TR REPORT 230-9 First edition 2005-03-01 Test code for machine tools - Part 9: Estimation of measurement uncertainty for machine tool tests according to series IsO 230, basic equations Code d'essai des machines-outils - Partie 9: Estimation de I'incertitude de mesure pour les essais des machines-outilsselonlaseérie/sO230,équationsdebase Reference number ISO/TR 230-9:2005(E) ISO @ISO2005 ISO/TR 230-9:2005(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademarkof Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ?ISO2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ISO 2005-All rights reserved ISO/TR 230-9:2005(E) Contents Page Foreword Introduction 1 Scope 2 Normative references . 3 Terms, definitions and symbols. 4 Estimation of measurement uncertainty U.... 5 Estimation of the uncertainty of parameters, basic equations . AnnexA(informative)Measurement uncertaintyof meanvalue....... Annex B (informative) Measurement uncertainty of estimator of standard deviation s .. Annex C (informative) Measurement uncertainty estimation for linear positioning measurement according to iso 230-2 ... Bibliography 24 @ IsO 2005-All rights reserved ili ISO/TR230-9:2005(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeer non-governmental, in liaison with isO, also take part in the work. iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. In exceptional circumstances, when a technical committee has collected data of a different kind from that informative in nature and does not have to be reviewed until the data it provides are considered to be no longer valid or useful. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO/TR 230-9 was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 2, Test conditions for metal cutting machine tools. Iso 230 consists of the following parts, under the general title Test code for machine tools: Part 1: Geometric accuracy of machines operating under no-load or finishing conditions Part 2: Determination of accuracy and repeatability of positioning of numerically controlled axes Part 3: Determination of thermal effects Part 4: Circular tests for numerically controlled machine tools Part 5: Determination of the noise emissions Part 6: Determinatio