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1、BRITISH STANDARD BS ISO 4703:2001 Test conditions for surface grinding machines with two columns Machines for grinding slideways Testing of the accuracy ICS 25.080.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:4
2、3 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 4703:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 17 September 2001 BSI 17 Septembe
3、r 2001 ISBN 0 580 38474 8 National foreword This British Standard reproduces verbatim ISO4703:2001 and implements it as the UK national standard. It supersedes BS 4656-23:1979 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools, which
4、 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 or European publications referred to in this document may be found in the BSI Standards Catalogue under
5、the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct appl
6、ication. 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, or proposals for change, and keep the UK interests informed; m
7、onitor 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 28, an inside back cover and a back cover. The BSI copyright date displayed in this docu
8、ment indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 4703:2001(E) OSI 1002 INTERNATIONAL STANDARD ISO 4703 Third edit
9、ion 2001-08-15 Test conditions for surface grinding machines with two columns Machines for grinding slideways Testing of the accuracy Conditions dessai des machines rectifier les surfaces planes deux montants Machines rectifier les glissires Contrle de la prcision Licensed Copy: sheffieldun sheffiel
10、dun, na, Sun Nov 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4703:2001(E) iii ContentsPage Foreword.iv 1Scope 1 2Normative references1 3Terminology and designation of axes.1 4
11、Preliminary remarks 3 5Specific installation conditions4 6Geometric tests5 7Machining tests22 8Accuracy and repeatability of numerically controlled positioning axes .24 Annex A (informative) Equivalent terms in German and Italian .27 Bibliography28 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov
12、 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4703:2001(E) iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO
13、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. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates clo
14、sely 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/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated
15、 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 the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held
16、 responsible for identifying any or all such patent rights. International Standard ISO 4703 was prepared by Technical Committee ISO/TC 39, Machine Tools, Subcommittee SC 2, Test conditions for metal cutting machine tools. This third edition cancels and replaces the second edition (ISO 4703:1984), wh
17、ich has been technically revised. Annex A of this International Standard is for information only. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARDISO 4703:2001(E) 1 Test conditions for surface grinding machines with two
18、 columns Machines for grinding slideways Testing of the accuracy 1Scope This International Standard specifies, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for checking accuracy and repeatability of positioning on general purpose and normal accuracy surface g
19、rinding machines with two columns for grinding slideways. It also specifies the applicable tolerances corresponding to the above-mentioned tests. This International Standard is applicable to machines with rectilinear grinding movements and with a movable table. It does not include machines with a fi
20、xed table or with a rotary table movement. This International Standard deals only with the verification of the accuracy of the machine. It does not apply to the testing of the machine operation (vibration, abnormal noises, stick-slip motion of components, etc.) nor to machine characteristics (such a
21、s speeds, feeds, etc.), which should generally be checked before testing the accuracy. This International Standard provides the terminology used for the principal components of the machine and the designations of the axes with reference to ISO 8411. NOTEIn addition to terms used in the three officia
22、l ISO languages (English, French and Russian), annex A of this International Standard gives the equivalent terms in the German and Italian languages; these are published under the responsibility of the member bodies for Germany (DIN) and Italy (UNI). However, only the terms given in the official lan
23、guages can be considered as ISO terms. 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do
24、 not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Mem
25、bers 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 230-2:1997, Test code for machine tools Part 2: Determination of accuracy and repe
26、atability of positioning numerically controlled axes 3Terminology and designation of axes See Figure 1 and Table 1. NOTEIf the horizontal spindle is considered to be the main spindle, axis designations (Y-Z and V-W) may be exchanged. In this case, R will be replaced by Q. In these circumstances, axi
27、s designation in the individual tests may be changed accordingly. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4703:2001(E) 2 Figure 1 Table 1 No.EnglishFrenchRussian 1BedBanc 2SlidewayGlissire 3TableTable 4Left-hand columnMontant gau
28、che 5Right-hand columnMontant droit 6Slideway, right-hand columnGlissire, montant droit; 7Cross-railTraverse mobile (coulisseau vertical) 8SaddleChariot 9Right-hand wheelhead (vertical spindle) Poupe porte-meule de droite (broche axe vertical) ( ) 10Left-hand wheelhead (horizontal spindle) Poupe por
29、te-meule de gauche (broche axe horizontal) ( ) 11BridgeEntretoise 12Grinding wheelMeule Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4703:2001(E) 3 4Preliminary remarks 4.1Measuring units In this International Standard, all linear dim
30、ensions, deviations and corresponding tolerances are expressed in millimetres; angular dimensions are expressed in degrees, and angular deviations and the corresponding tolerances are expressed in ratios but, in some cases, microradians or arcseconds may be used for clarification purposes. The equiv
31、alence of the following expressions should always be kept in mind: 0,010/1 000 = 10 ?rad?2“ 4.2Reference to ISO 230-1 To apply this International Standard, reference shall be made to ISO 230-1, especially for the installation of the machine before testing, warming up of the spindle and other moving
32、components, description of measuring methods and recommended accuracy of testing equipment. In the “Observations” box of the tests described in the following clauses, the instructions are accompanied by a reference to the corresponding clause in ISO 230-1 in cases where the test concerned is in comp
33、liance with the specifications of ISO 230-1. Reference should be made to ISO 230-2 for positioning tests. 4.3Testing sequence The sequence in which the tests are presented in this International Standard in no way defines the practical order of testing. In order to make the mounting of instruments or
34、 gauging easier, tests may be performed in any order. 4.4Tests to be performed When testing a machine, it is not always necessary or possible to carry out all the tests described in this International Standard. When the tests are required for acceptance purposes, it is up to the user to choose, in a
35、greement with the supplier/manufacturer, those tests relating to the components and/or the properties of the machine which are of interest. These tests are to be clearly stated when ordering a machine. Mere reference to this International Standard for the acceptance tests, without specifying the tes
36、ts to be carried out, and without agreement on the relevant expenses, cannot be considered as binding for any contracting party. 4.5Measuring instruments The measuring instruments indicated in the tests described in clauses 6, 7 and 8 are examples only. Other instruments measuring the same quantitie
37、s and having at least the same accuracy may be used. Dial gauges shall have a resolution of at least 0,001 mm. 4.6Minimum tolerance When establishing the tolerance for a measuring length different from that given in this International Standard (see 2.311 of ISO 230-1:1996), it shall be taken into co
38、nsideration that the minimum value of tolerance is 0,005 mm. 4.7Machining tests Machining tests shall be made with finishing cuts only. Roughing cuts shall be avoided since they are liable to generate appreciable cutting forces. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:
39、00 2006, Uncontrolled Copy, (c) BSI ISO 4703:2001(E) 4 5Specific installation conditions 5.1Foundations Foundations are essential for providing the necessary stiffness to this type of machine which should always be installed in the users workshop on foundations designed and manufactured correctly. F
40、oundations suitable to every type of machine are not always available in the manufacturers assembly workshop; therefore, if the test is being carried out on a machine simply resting on the floor, this shall be taken into account and recorded on the test report. 5.2Isolation Foundations should be iso
41、lated from the surrounding floor in order not to transmit vibrations and/or heat. 5.3Thermal conditions When the table is hydraulically operated, it is subject to thermal distortions due to the temperature difference between the oil beneath and the coolant on its top. The test shall then be carried
42、out after moving the table and delivering coolant for a time sufficient to let it reach the working condition, following the manufacturers instructions. 5.4Testing temperature The test room temperature variation should not exceed 2?C. Otherwise, the ambient temperature conditions throughout the test
43、s shall be specified by agreement between the supplier/manufacturer and user. The machine should be placed in this environment at least 24 h prior to the tests. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4703:2001(E) 5 6Geometric te
44、sts 6.1Axes of motion Object G1 Checking of straightness of the table longitudinal movement (X-axis): a)in the horizontal XY-plane (EYX); b)in the vertical ZX-plane (EZX). Diagram a)b) Tolerance a) and b) 0,02 for measuring lengths up to 2 000 add 0,01 for each 1 000 increase in length, for length g
45、reater than 2 000 mm Maximum tolerance: 0,10 Local tolerance: 0,01 for any measuring length of 1 000 Measured deviation For X = a) b) Measuring instruments Optical methods Observations and references to ISO 230-1:19965.232.12, 5.232.13 and 5.232.14 The optical component is mounted on the wheelhead i
46、n order to reduce effects of the non-rigid table. The support of the bridge should be at the same distance as the support of the workpiece. When mounting the telescope, be aware of the possible flexibility of the table. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 08:23:43 GMT+00:00 2006,
47、Uncontrolled Copy, (c) BSI ISO 4703:2001(E) 6 Object G2 Checking of angular deviation of the table longitudinal movement (X-axis): a)in the ZX-plane (EBX: pitch); b)in the vertical YZ-plane (EAX: roll). Diagram a) a Reference level b) Tolerance a)b) Xu4 0000,04/1 0000,02/1 000 X 4 0000,06/1 0000,03/
48、1 000 Measured deviation For X = a) b) Measuring instruments Precision level or optical methods Observations and references to ISO 230-1:19965.231.3, 5.232.2 and 5.232.21 One level shall be placed on the movable component: a)(EBX: pitch); in the X-axis direction; b)(EAX: roll); in the Y-axis directi
49、on. When the X-axis motion causes an angular deviation of both spindle head and work holding table, differential measurements of the two angular deviations shall be made, and this shall be stated. The reference level shall be located on the spindle head, and the head shall be in the middle of the travel range. Measurements sh