《BS-ISO-2407-1997.pdf》由会员分享,可在线阅读,更多相关《BS-ISO-2407-1997.pdf(30页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS ISO 2407:1997 Test conditions for internal cylindrical grinding machines with horizontal spindle Testing of accuracy ICS 25.080.50 BS ISO 2407:1997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority o
2、f the Standards Board and comes into effect on 15 May 1998 BSI 06-1999 ISBN 0 580 29810 8 National foreword This British Standard reproduces verbatim ISO 2407:1997 and implements it as the UK national standard. It supersedes BS 4656-8:1974 which is withdrawn. The UK participation in its preparation
3、was entrusted to Technical Committee MTE/1, Machine tools, which has the responsibility to: 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; monitor rela
4、ted international and European developments and promulgate them in the UK. 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
5、 be found in the BSI Standards Catalogue under 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 S
6、tandards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the ISO title page, pages ii to iv, pages 1 to 20, an i
7、nside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments BS ISO 2407:1997 BSI 06-1999i Contents Pa
8、ge National forewordInside front cover Forewordiii Text of ISO 24071 ii blank BS ISO 2407:1997 ii BSI 06-1999 Contents Page Forewordiii 1Scope1 2Normative reference1 3Machine configurations1 3.1Descriptions1 3.2Terminology and designation of axes1 4Preliminary remarks3 4.1Measuring units3 4.2Referen
9、ce to ISO 230-13 4.3Testing sequence3 4.4Tests to be performed3 4.5Measuring instruments4 4.6Machining tests4 4.7Minimum tolerance4 4.8Diagrams4 5Geometric tests5 5.1Linear axes motions5 5.2Work holding spindle7 5.3Wheel spindle11 5.4Facing wheelhead14 6Positioning test18 7Machining tests19 Annex A
10、(informative) Equivalent terms in German and ItalianInside back cover Annex B (informative) BibliographyInside back cover Figure 12 Figure 22 Figure 32 Figure 42 Table 1 Terminology3 Descriptors: Machine tools, grinding machines (tools), positioning, tests, geometric tests, determination, accuracy,
11、testing conditions. BS ISO 2407:1997 BSI 06-1999iii 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 technical committees. Ea
12、ch 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 closely with the Internatio
13、nal Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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
14、 casting a vote. International Standard ISO 2407 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 2407:1984), which has been technically revised. Annex A a
15、nd Annex B of this International Standard are for information only. iv blank BS ISO 2407:1997 BSI 06-19991 1 Scope This International Standard specifies, with reference to ISO 230-1, both geometric and machining tests on general purpose and normal accuracy internal cylindrical grinding machines with
16、 horizontal spindle, whether fitted with a facing wheelhead slide or not. It also specifies the applicable tolerances corresponding to the above mentioned tests. This International Standard deals only with the verification of the accuracy; it applies neither to the testing of the machine operation (
17、vibrations, abnormal noise, stick-slip motion of components, etc.), nor to the checking of its characteristics (such as speeds, feeds, etc.), which should generally be checked before the testing of the accuracy. This International Standard provides the terminology used for the principal parts of the
18、 machine and the designation of the axes with reference to ISO 841. NOTEIn addition to the terms used in two of the three official ISO languages (English and French), Annex A of this International Standard provides the equivalent terms in the German and Italian languages; these are published under t
19、he responsibility of the National member bodies for Germany (DIN) and Italy (UNI). However, only the terms given in the official languages can be considered as ISO terms. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of
20、this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated
21、below. Members of IEC and ISO 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. 3 Machine configurations 3.1 Descriptions The common characteristic of all
22、internal cylindrical grinding machines with horizontal spindle is that they have at least both horizontal workhead and the wheelhead on the bed and the spindles are facing each other. The workhead may swivel around a vertical axis (B-axis) for grinding conical surfaces. Depending upon the machine de
23、sign, one of the two heads (workhead or wheelhead) can move along the X-axis. The wheelhead usually can move along the Z-axis (see Figure 1 and Figure 2). In some cases these machines are equipped with a facing wheel. This may be accomplished by means of the second wheelhead as shown in Figure 3 or
24、by an additional swivelling wheelhead attachment. This attachment is usually mounted on the workhead with a linear movement (W-axis) parallel to Z-axis and a swivelling movement (C-axis) around the W-axis (see Figure 4). 3.2 Terminology and designation of axes See Figure 1 to Figure 4 and Table 1. B
25、S ISO 2407:1997 2 BSI 06-1999 Figure 1 Figure 2 Figure 3 Figure 4 BS ISO 2407:1997 BSI 06-19993 Table 1 Terminology 4 Preliminary remarks 4.1 Measuring units In this International Standard, all linear dimensions, deviations and corresponding tolerances are expressed in millimeters; angular dimension
26、s 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 equivalence of the following expressions should always be kept in mind: 0,010/1 000 = 10 106= 10 4rad .
27、 20 4.2 Reference 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 components, description of measuring methods and recommended accuracy of testing equipm
28、ent. In the “Observations” block of the tests described in the following sections, the instructions are followed by a reference to the corresponding clause in ISO 230-1 in cases where the test concerned is in compliance with the specifications of that part of ISO 230. 4.3 Testing sequence The sequen
29、ce 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 gauging easier, tests may be performed in any order. 4.4 Tests to be performed When testing a machine, it is not always necessary or po
30、ssible 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 agreement with the supplier/manufacturer, those tests relating to the components and/or the properties of the machine which are of inter
31、est. These tests are to be clearly stated when ordering a machine. Mere reference to this International Standard for the acceptance tests, without specifying the tests to be carried out, and without agreement on the relevant expenses, cannot be considered as binding for any contracting party. Ref.En
32、glishFrench 1BedBanc 2WheelheadPoupe porte-meule 3Wheelhead cross slideChariot transversal de poupe porte-meule 4Wheelhead carriageChariot de poupe porte-meule 5Wheel spindleBroche porte-meule 6Internal grinding wheelMeule intrieure 7Workhead (swivelling)Poupe porte-pice (pivotante) 8Workhead cross
33、slideChariot transversal de poupe porte-pice 9Workpiece holderPorte-pice 10Workpiece guardProtecteur de la pice 11Wheel guardCarter de meule 12Facing wheelheadPoupe porte-meule surfacer 13Swivel arm (with drive and guard)Bras pivotant (avec dispositif dentranement et protecteur) 14Facing spindleBroc
34、he porte-meule surfacer 15Facing wheelMeule surfacer 16Facing wheel quillCoulant de meule surfacer BS ISO 2407:1997 4 BSI 06-1999 4.5 Measuring instruments The measuring instruments indicated in the tests described in the following sections are examples only. Other instruments measuring the same qua
35、ntities and having at least the same accuracy may be used. Dial gauges shall have a resolution of 0,001 millimeters or better. 4.6 Machining tests Machining tests shall be made with finishing cuts only, not with roughing cuts which are liable to generate appreciable cutting forces. 4.7 Minimum toler
36、ance 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 consideration that the minimum value of tolerance is 0,005 mm. 4.8 Diagrams For reasons of simplicity, the diagrams in clauses 5
37、and 6 of this International Standard illustrate only one type of machine. BS ISO 2407:1997 BSI 06-19995 5 Geometric tests 5.1 Linear axes motions Object G1 Checking of straightness of the wheelhead (or workhead) slide movement along the Z-axis: a) in the vertical plane; b) in the horizontal plane. D
38、iagram Tolerance a) 0,015 for a measuring length of 300 b) 0,008 for a measuring length of 300 (Measured deviation) a) b) Measuring instruments Straightedge or test mandrel and dial gauge Observations and references to ISO 230-15.232.1 When a straightedge is used, the dial gauge support shall be pla
39、ced on a fixed part of the machine, the stylus touching a straightedge laid parallel to the general direction of the longitudinal motion of the table. When a test mandrel is used, the dial gauge support shall be placed on the wheelhead and the test mandrel in the work holding spindle. The check shal
40、l be repeated after rotating the spindle through 180. BS ISO 2407:1997 6 BSI 06-1999 Object G2 Checking of squareness between the movement of the wheelhead cross slide or workhead cross slide (X-axis) and the Z-axis motion. Diagram Tolerance(Measured deviation) 0,02/300 where 300 is the distance bet
41、ween the two points touched. Measuring instruments Test mandrel and dial gauge support Observations and references to ISO 230-15.512.32 Set a test mandrel on the work-holding spindle and adjust the workhead so that the spindle axis is parallel to the Z-axis motion. Fix the dial gauge support on the
42、test mandrel, with the stylus of the dial gauge touching a point of the wheel spindle. Turn the work-holding spindle through 180 and move the X-axis until the stylus again touches the same point. The difference in readings of the dial gauge corresponding to 300 mm displacement gives the deviation fr
43、om squareness. BS ISO 2407:1997 BSI 06-19997 5.2 Work-holding spindle Object G3 Checking of the work holding spindle rotation: a) run-out of the external centering surface; b) periodic axial slip; c) camming of the front resting surface (including periodic axial slip). Diagram Tolerance(Measured dev
44、iation) a) b) c) a) 0,005b) 0,005c) 0,01 Measuring instruments Dial gauge Observations and references to ISO 230-1 a) 5.612.2 In the case of a tapered spindle nose, the stylus of the dial gauge shall be set normal to the surface to be checked. b) 5.622.1 and 5.622.2 c) 5.631 and 5.632 Distance A of
45、the dial gauge from the spindle axis shall be as large as possible. The value and the direction of the axial force F to be applied shall be specified by the supplier/manufacturer. Where preloaded thrust bearings are used, no force need be applied. BS ISO 2407:1997 8 BSI 06-1999 Object G4 Checking of
46、 run-out of the internal taper or of the internal centering register of the work holding spindle: a) at the outlet of the housing; b) at a distance from the outlet equal to Da/2 (100 mm minimum and 300 mm maximum). Where Da is the maximum admissible workpiece diameter. Diagram Tolerance(Measured dev
47、iation) a) b) a) 0,005b) 0,015 for a measuring length of 300 Measuring instruments Test mandrel according to the type of spindle nose and dial gauge Observations and references to ISO 230-15.612.3 In the case of an internal taper, the test will be made with the aid of a mandrel. In the case of an in
48、ternal cylindrical centering register, the test will be made with the aid of the dial gauge and without using a test mandrel. In this case, the value of a) will be taken as the tolerance. NOTEWhen distance Da/2 # 300 mm, the tolerance, T, of b) shall be determined by the following formula: T0,005 0,
49、0100,005 300 - - Da 2 - -+= BS ISO 2407:1997 BSI 06-19999 Object G5 Checking of parallelism between the work-holding spindle axis and the Z-axis motion of the wheelhead (or workhead): a) in the vertical plane; b) in the horizontal plane. Diagram Tolerance a) 0,025 for a measuring length of 300 b) 0,01 for a measuring length of 300 (Measured deviation) a) b) Measuring instruments Test mandrel and dial gauge Observations and references to ISO 230-15.412.1 and 5.422.3 The checking shall be
链接地址:https://www.31doc.com/p-3747156.html