1、BRITISH STANDARD BS ISO 230-6:2002 Test code for machine tools Part 6: Determination of positioning accuracy on body and face diagonals (Diagonal displacement tests) ICS 25.080.01 BS ISO 230-6:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and S
2、trategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 28 November 2002 BSI 28 November 2002 ISBN 0 580 40811 6 National foreword This British Standard reproduces verbatim ISO 230-6:2002 and implements it as the UK national standard. The UK participati
3、on in its preparation was entrusted to Technical Committee MTE/1, Machine tools, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications refer
4、red to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provis
5、ions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation,
6、or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 9 and a back cover. The BS
7、I copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsINTERNATIONAL STANDARD ISO 230-6 First edition 2002-11-01 Reference number ISO 230-6:2002(E) Test code for machine tools Part 6: Determination of positio
8、ning accuracy on body and face diagonals (Diagonal displacement tests) Code dessai des machines-outils Partie 6: Dtermination de la prcision de positionnement sur les diagonales principales et de face (Essais de dplacement en diagonale)BSISO2306:2002ii FDP dicslaimre This FDP fam elitnoc yt deddebme
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13、p esaCela 65 G 1121-HCeneva 02 T.le + 22 14 10 947 11 Fxa + 14 47 2290 9 74 E-liam cpoyrigthsio.ch Web wwwsi.oc.h Prni detni Sztiwerldna BSISO2306:2002 iii Contents Page 1 Scope . 1 2 Normative references . 1 3 Terms and definitions 1 4 Preliminary remarks . 4 5 Test procedure, parameters, set-up pr
14、ocedure . 5 6 Evaluation of results . 7 7 Points to be agreed between supplier/manufacturer and user . 7 8 Presentation of the results 7 Annex A Set-up procedure for laser interferometer. 9 BSISO2306:2002iv Foreword ISO (the International Organization for Standardization) is a worldwide federation o
15、f national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. In
16、ternational organizations, governmental and 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
17、the rules given in the ISO/IEC Directives, Part 3. 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. Attention is drawn to
18、the possibility that some of the elements of this part of ISO 230 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 230-6 was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 2, Te
19、st 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 numer
20、ically controlled axes Part 3: Determination of thermal effects Part 4: Circular tests for numerically controlled machine tools Part 5: Determination of the noise emission Part 6: Determination of positioning accuracy on body and face diagonals (Diagonal displacement tests) Part 7: Axes of rotation
21、Methods for specifying and testing Annex A of this part of ISO 230 is for information only. BSISO2306:2002ANRETNIITOTS LANDNADRA ISO -0322002:6)E( Test code for machine tools Part 6: Determination of positioning accuracy on body and face diagonals (Diagonal displacement tests) 1 Scope This part of I
22、SO 230 specifies diagonal displacement tests which allow estimation of the volumetric performance of a machine tool. Complete testing of the volumetric performance of a machine tool is a difficult and time-consuming process. Diagonal displacement tests reduce the time and cost associated with testin
23、g the volumetric performance. A diagonal displacement test is not in itself a diagnostic test, although conclusions of a diagnostic nature may sometimes be possible from the results. In particular, when face diagonal tests are included, a direct measurement of the axes squareness is possible. Diagon
24、al displacement tests on body diagonals may be supplemented by tests in the face diagonals, by tests parallel to the machine axes in accordance with ISO 230-2, or by the evaluation of the contouring performance in the three coordinate planes as defined in ISO 230-4. Diagonal displacement tests may b
25、e used for acceptance purposes and as reassurance of machine performance where parameters of the test are used as comparison index. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 230. For da
26、ted references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 230 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated r
27、eferences, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 230-1:1996, Test code for machine tools Part 1: Geometric accuracy of machines operating under no-load or finishing conditions ISO 23
28、0-2:1997, Test code for machine tools Part 2: Determination of accuracy and repeatability of positioning numerically controlled axes ISO 230-3:2001, Test code for machine tools Part 3: Determination of thermal effects ISO 230-4:1996, Test code for machine tools Part 4: Circular tests for numerically
29、 controlled machine tools 3 Terms and definitions For the purposes of this part of ISO 230, the following terms and definitions apply. 3.1 working volume volume defined by the travel of the machine linear axes for machining operations (not including those travels used for auxiliary operations, e.g.
30、tool change) BSISO2306:20021ISO -03202:6)E(20 2 ISO 2002 Ar llithgr seresvde 3.2 body diagonal space diagonal of a rectangular prism within the working volume of the machine tool NOTE 1 Four body diagonals are defined by the working volume. NOTE 2 The user may reference a body diagonal using its sta
31、rting position, for example +X+YZ is the diagonal that goes from +X+YZ to XY+Z. An alternative nomenclature using NNP (for X positive, Y negative, Z positive, direction of travel) is also acceptable. See Figure 1. 3.3 face diagonal diagonal in a face plane of a rectangular prism within the working v
32、olume of a machine tool NOTE 1 Six different types of face diagonal may be defined within the working volume. For each diagonal selected, it is necessary to define further its location in the third axis. Ideally, the plane of the face diagonals should be either an external face or a central slice, a
33、s shown in Figure 2. NOTE 2 The user may reference a face diagonal using its start position, for example +XY is the diagonal that goes from +XY to X+Y. To define the third axis, the form +X Y Z300 may be used to define an XY diagonal at Z = 300. An alternative nomenclature using NP or NP300 (for X n
34、egative, Y positive, Z missing, directions of travel) is also acceptable. NOTE 3 Face diagonals are usually selected in crossed pairs for each plane as shown in Figure 2. See Figure 2. Figure 1 Four body diagonals of a rectangular prism D F BSISO2306:20022ISO -0322002:6)E( ISO 2002 r llAithgs reserv
35、de 3 3.4 diagonal systematic deviation of positioning maximum bidirectional systematic deviation of positioning (in accordance with ISO 230-2) of the four body diagonals, , , , (evaluation of , see Figure 3) , , , 3.5 diagonal systematic deviation of positioning in face diagonals maximum bidirection
36、al systematic deviation of positioning (in accordance with ISO 230-2) of the two face diagonals, , , where “ab” defines the coordinate plane of measurement EXAMPLE = max. , for the two face diagonals in the XY plane. Figure 2 Examples of face diagonals of a rectangular prism E d E 1 E 2 E 3 E 4 E i
37、E d = max. E 1 E 2 E 3 E 4 E d (ab) E 1 (ab) E 2 (ab) E d (XY) E 1 (XY) E 2 (XY) BSISO2306:20023ISO -03202:6)E(20 4 ISO 2002 Ar llithgr seresvde 3.6 diagonal reversal value maximum reversal value (in accordance with ISO 230-2) of the four body diagonals, , , , (evaluation ofsee Figure 3) , , , 3.7 d
38、iagonal reversal value for face diagonals maximum reversal value (in accordance with ISO 230-2) in the two face diagonals, , , where “ab” defines the coordinate plane of measurement EXAMPLE = max. , for the two face diagonals in the XY plane. 3.8 volumetric performance ability of a machine tool to p
39、erform the intended multi-axes functions anywhere within the working volume or a smaller volume as agreed between manufacturer/supplier and user NOTE Indication for reduced volume shall be by wording “reduced volume” after any parameter stated, e.g. (reduced volume) = . 4 Preliminary remarks 4.1 Mea
40、suring units In this part of ISO 230, all linear dimensions are expressed in millimetres. 4.2 Reference to ISO 230-1 and ISO 230-2 To apply this part of ISO 230, reference should be made to ISO 230-1, especially for the installation of the machine before testing, warming-up of moving parts and recom
41、mended accuracy of test equipment. Reference should also be made to ISO 230-2, especially for set-up and instrumentation, evaluation of results and presentation of results. Figure 3 Evaluation of and B d B 1 B 2 B 3 B 4 B i B d = max. B 1 B 2 B 3 B 4 E i B i B d (ab) B 1 (ab) B 2 (ab) B d (XY) E 1 (
42、XY) E 2 (XY) E d 0,012 mm BSISO2306:20024ISO -0322002:6)E( ISO 2002 r llAithgs reservde 5 4.3 Tests to be performed When testing a machine it is not always necessary, or possible, to carry out all the tests described in this part of ISO 230. When the tests are required for acceptance purposes, it is
43、 up to the user to choose, in agreement with the supplier/manufacturer, those tests relating to the features which are of interest to him, or relating to the components forming parts of the machine. Nevertheless these tests shall be clearly stated when ordering a machine and submitted to agreement a
44、s to the resulting expenses. A solitary reference to this part of ISO 230 for acceptance tests, without agreement on the tests to be applied and on the resulting expenses, cannot be considered binding on any contracting party. 4.4 Measuring instruments Laser interferometer or other measuring systems
45、 with comparable accuracy may be used (see2.2 of ISO 230-1:1996). 4.5 Position of linear axes not under test The position of the axis slides or moving components on the axes that are not under test shall be stated in the test sheet. 4.6 Measurement uncertainty The measurement uncertainty is influenc
46、ed by the uncertainties of the measuring instruments used for a single test; the uncertainties of possible alignments of the measuring instruments (dead path error, cosine error; see clause A.13 of ISO 230-1:1996); the uncertainties due to environmental influences, e.g. temperature influences (see c
47、lause 4 of ISO 230-3:2001). The combined measurement uncertainty of a test should not be larger than a portion of the tolerance. The permissible portion should be agreed upon between the supplier/manufacturer and the user. 5 Test procedure, parameters, set-up procedure 5.1 Test procedure The test pr
48、ocedure is conceptually similar to that described in ISO 230-2 for linear axes, except that linear displacements are not measured parallel to a linear axis, but along the diagonal of the working volume or plane of the machine tool. NOTE On machines where one of the axes is much larger than the other
49、s, the diagonal displacement tests can be insensitive to certain systematic machine deviations. The measurements shall be carried out along the four body diagonals (see Figure 1) of the working volume of a three-dimensional machine, and the two face diagonals of a two-dimensional machine (e.g. turning machine). Additionally, any or all of the six face diagonals of a three-dimensional machin
