BS ISO 230-4-2005 Test code for machine tools - Circular tests for numerically controlled machine tools《机床检验通则 数控机床的圆检验》.pdf

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1、BRITISH STANDARD BS ISO 230-4:2005 Test code for machine tools Part 4: Circular tests for numerically controlled machine tools ICS 25.040.20 BS ISO 230-4:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 26 April 2005 BSI 26 April 2005 ISB

2、N 0 580 45907 1 National foreword This British Standard reproduces verbatim ISO 230-4:2005 and implements it as the UK national standard. It supersedes BS ISO 230-4:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools, which has t

3、he 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 referred to in this document may be found in the BSI Catalogue under the section entitled “Intern

4、ational 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 provisions of a contract. Users are responsible for its correct application. Compliance with a Bri

5、tish 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; monitor related international a

6、nd 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 v, a blank page, pages 1 to 17 and a back cover. The BSI copyright notice displayed in this document indicates when the document was

7、last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 230-4:2005(E) OSI 5002INTERNATIONAL STANDARD ISO 230-4 Second edition 2005-04-01 Test code for machine tools Part 4: Circular tests for numerically controlled machine tools Code dessai des machines-outils Pa

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13、02 Allr ithgsr esedevrBS5002:4032OSIIS-032 O4:(5002E) I SO 5002 All irthgs ersedevr iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Test conditions 4 4.1 Test environment 4 4.2 Machine to be tested. 4 4.3 Machine warm-up 4 4.4 Test parameters 5 4.5 Test

14、 instrument calibration 5 4.6 Test uncertainty 5 5 Test procedure 6 6 Presentation of results . 6 7 Points to be agreed between supplier/manufacturer and user 6 Annex A (informative) Differences between circular deviations G and G(b) and radial deviations F and D 9 Annex B (informative) Influences o

15、f typical machine deviations on circular paths 10 Annex C (informative) Adjustment of diameter and contouring feed . 15 Annex D (informative) Circular tests using feedback signal 16 Bibliography . 17 BSISO2304:2005IS-032 O4:(5002E) iv I SO 5002 All irthgs ersedevrForeword ISO (the International Orga

16、nization 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. Each member body interested in a subject for which a technical committee has been establis

17、hed 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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization

18、. International Standards are drafted in accordance with the rules given in the ISO/IEC 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. P

19、ublication 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such pate

20、nt rights. ISO 230-4 was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 2, Test conditions for metal cutting machine tools. This second edition cancels and replaces the first edition (ISO 230-4:1996), of which it constitutes a technical revision. The main changes are the r

21、eplacement of circular hysteresis H by bi-directional circular deviation G(b), because of the difficulty of evaluating circular hysteresis H by commonly available metrology instruments, and because bi-directional circular deviation G(b) contains similar information, the introduction of the mean bi-d

22、irectional radial deviation, D, addition of the word “counter-clockwise”, the US variant of “anticlockwise”, for purposes of clarity where US usage is the norm, mention of measurement and test uncertainty, the inclusion of parameters G(b) and D in Annex A, and modification of the wording of 3.8 and

23、B.3.1. 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 numerically controlled machine tools Part 3:

24、Determination of thermal effects Part 4: Circular tests for numerically controlled machine tools Part 5: Determination of the emission Part 6: Determination of positioning accuracy on body and face diagonals (Diagonal displacement tests) BSISO2304:2005IS-032 O4:(5002E) I SO 5002 All irthgs ersedevr

25、v Part 7: Geometric accuracy of axes of rotation Part 9: Estimation of measurement uncertainty for machine tool tests according to series 230, basic equations Technical Report The following parts are under preparation: Part 8: Determination of vibration levels Technical Report BSISO2304:2005blank 50

26、02:4032OSISBINTENRATIONAL TSANDADR IS-032 O4:(5002E)I SO 5002 All irthgs ersedevr 1Test code for machine tools Part 4: Circular tests for numerically controlled machine tools 1 Scope This part of ISO 230 specifies methods of testing and evaluating the bi-directional circular deviation, the mean bi-d

27、irectional radial deviation, the circular deviation and the radial deviation of circular paths that are produced by the simultaneous movements of two linear axes. Relevant measuring instruments are described in ISO 230-1:1996, 6.63. The objective of this part of ISO 230 is to provide a method for th

28、e measurement of the contouring performance of a numerically controlled machine tool. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of

29、the referenced document (including any amendments) applies. ISO 230-1:1996, Test code for machine tools Part 1: Geometric accuracy of machines operating under no-load or finishing conditions. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 no

30、minal path numerically controlled and programmed circular path defined by its diameter (or radius), the position of its centre and its orientation in the working zone of the machine tool and which may be either a full circle or a partial circle of at least 90 3.2 actual path path produced by the mac

31、hine tool when programmed to move on the nominal path 3.3 bi-directional circular deviation G(b) minimum radial separation of two concentric circles (minimum zone circles) enveloping two actual paths, where one path is carried out by a clockwise contouring motion and the other one by an anticlockwis

32、e (counter-clockwise) contouring motion See Figure 1. BSISO2304:2005IS-032 O4:(5002E) 2 I SO 5002 All irthgs ersedevrNOTE 1 The bi-directional circular deviation G(b) may be evaluated as the maximum radial range of deviations around the least squares circle. The least squares circle is calculated fr

33、om 2 paths, i.e. the clockwise and the anticlockwise (counter-clockwise) path. NOTE 2 Bi-directional circular deviation G(b) does not include set-up errors, i.e. centring errors of the measuring instrument. NOTE 3 Bi-directional circular deviation G(b) measurement requires the use of test equipment

34、only with calibrated displacement measurements (no need for calibrated length measurements for path diameter). The measurements of radial deviation F and mean bi-directional radial deviation value D require test equipment with both calibrated length and calibrated displacement (see Annex A). NOTE 4

35、A line situated in a plane is said to be circular when all its points are contained between two concentric circles whose radial separation does not exceed a given value (see Figure 2 and also ISO 230-1:1996, 6.61). NOTE 5 Designation G(b) is for measurements with external measurement equipment only,

36、 e.g. as described in ISO 230-1:1996, 6.63. Results from circular tests using a feed back signal are designated as “bi-directional circular deviation using feed back signal, G(b) f ,” see Annex E. Key + centre of least squares circle of the two actual parts 0 starting point 1 actual path, clockwise

37、2 actual path, anticlockwise (counter-clockwise) bi-directional circular deviation G(b) XY= 0,015 mm Figure 1 Evaluation of bi-directional deviation G(b) 3.4 circular deviation G minimum radial separation of two concentric circles enveloping the actual path (minimum zone circles) of a clockwise or a

38、nticlockwise (counter-clockwise) contoured path and which may be evaluated as the maximum radial range around the least squares circle See Figure 2. NOTE 1 The notes for bi-directional circular deviation G(b) apply for circular deviation G. For differences between the circular deviation G and the ra

39、dial deviation F, see Annex A. NOTE 2 Designation G is for measurements with external measurement equipment, e.g. described in ISO 230-1, 6.63, only. Results from circular tests using feed back signal shall be designated circular deviation using feed back signal G f , see Annex D. BSISO2304:2005IS-0

40、32 O4:(5002E) I SO 5002 All irthgs ersedevr 3Key + centre of least squares circle of the two actual parts 0 starting point 1 minimum zone circles 2 actual path circular deviation G XY= 0,012 mm Figure 2 Evaluation of circular deviation G 3.5 radial deviation F deviation between the actual path and t

41、he nominal path, where the centre of the nominal path is obtained either a) from the centring of the measuring instruments on the machine tool, or b) from the least squares centring analysis for a full circle only. NOTE 1 Positive deviations are measured away from the centre of the circle and negati

42、ve ones towards the centre of the circle (see Figure 3). The radial deviation is given by the maximum value, F max , and the minimum value, F min . NOTE 2 Set-up errors may be included in the radial deviation F; this is applicable only to a) above. NOTE 3 For differences between the radial deviation

43、 F and the circular deviation G, see Annex A. Key + centre of nominal circles 0 starting point 1 nominal path 2 actual path radial deviation: F ZX, max= +0,008 mmF ZX, min= 0,006 mm Figure 3 Evaluation of radial deviation F BSISO2304:2005IS-032 O4:(5002E) 4 I SO 5002 All irthgs ersedevr3.6 mean bi-d

44、irectional radial deviation D deviation between the radius of the nominal path and the radius of the least squares circle of two full circle actual paths, where one path is carried out by a clockwise contouring motion and the other one by a anticlockwise (counter-clockwise) contouring motion NOTE Fo

45、r differences between mean bi-directional radial deviation D and bi-directional circular deviation G(b), see Annex A. 3.7 identification of axes designation of the axes which are moved to produce the actual path 3.8 sense of contouring clockwise/anticlockwise (counter-clockwise) contouring sequence

46、of indices denoting the direction of contouring NOTE The order of the indices matches the order in which the circular arc crosses the positive extreme of each axis. For example GXY denotes the anticlockwise (counter-clockwise) circular deviation, because an anticlockwise (counter- clockwise) arc in

47、the XY plane crosses the X+ axis immediately followed by the Y+ axis. In the case of a bi-directional result, the indices denote the direction of the first arc. 4 Test conditions 4.1 Test environment Where the temperature of the environment can be controlled, it shall be set at 20 C. Otherwise, the

48、output of the measuring instrument and the machine nominal readings shall be adjusted to yield results corrected to 20 C (for radial deviation measurements only). The machine and, if relevant, the measuring instrument shall have been in the test environment long enough to have reached a thermally st

49、able condition before testing. They shall be protected from draughts and external radiation such as sunlight, overhead heaters, etc. 4.2 Machine to be tested The machine shall be completely assembled and fully operational. All necessary levelling operations and functional checks shall be completed before starting the tests. The circular tests shall be carried out with the machine in the unloaded con