1、BRITISH STANDARD BS ISO 13041-8:2004 Test conditions for numerically controlled turning machines and turning centres Part 8: Evaluation of thermal distortions ICS 25.040.20 BS ISO 13041-8:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 2
2、3 January 2004 BSI 23 January 2004 ISBN 0 580 43315 3 National foreword This British Standard reproduces verbatim ISO 13041-8:2004 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools, which has the responsib
3、ility 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 “International Stan
4、dards 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 British Standar
5、d 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 and European
6、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 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last
7、 issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 13041-8:2004(E) OSI 4002INTERNATIONAL STANDARD ISO 13041-8 First edition 2004-01-15 Test conditions for numerically controlled turning machines and turning centres Part 8: Evaluation of thermal distortions Condi
8、tions dessai des tours commande numrique et des centres de tournage Partie 8: valuation des effets thermiques BSISO130418:2004IS-14031 O8:(4002E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb ynted iv roweb detu slahl ton
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13、www.is.o gro Pulbisdehi n Switlrez dnaii ISO 4002 Allr ithgsr esedevrBSISO130418:2004IS-14031 O8:(4002E) I SO 4002 All irthgs ersedevr iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparin
14、g 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. International organizations, governmental and non-governmental, in liai
15、son 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/IEC Directives, Part 2. The main task of t
16、echnical 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. Attention is d
17、rawn 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 13041-8 was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 2, Test conditions for me
18、tal cutting machine tools. ISO 13041 consists of the following parts, under the general title Test conditions for numerically controlled turning machines and turning centres: Part 1: Geometric tests for machines with a horizontal workholding spindle Part 2: Geometric tests for machines with vertical
19、 workholding spindle Part 3: Geometric tests for machines with inverted vertical workholding spindle Part 4: Accuracy and repeatability of positioning of linear and rotary axes Part 5: Accuracy of feeds, speeds and interpolations Part 6: Accuracy of a finished test piece Part 7: Evaluation of contou
20、ring performance in the coordinate planes Part 8: Evaluation of thermal distortions BSISO130418:2004IS-14031 O8:(4002E) iv I SO 4002 All irthgs ersedevrIntroduction The object of ISO 13041 is to supply information as wide and comprehensive as possible on geometric, positional, contouring, thermal an
21、d machining tests which can be carried out for comparison, acceptance, maintenance or any other purpose. ISO 13041 specifies, with reference to the relevant parts of ISO 230, Test code for machine tools, tests for turning centres and numerically controlled turning machines with/without tailstocks st
22、anding alone or integrated in flexible manufacturing systems. ISO 13041 also establishes the tolerances or maximum acceptable values for the test results corresponding to general purpose and normal-accuracy turning centres and numerically controlled turning machines. BSISO130418:2004INTENRATIONAL TS
23、ANDADR IS-14031 O8:(4002E)I SO 4002 All irthgs ersedevr 1Test conditions for numerically controlled turning machines and turning centres Part 8: Evaluation of thermal distortions 1 Scope This part of ISO 13041 specifies, with reference to ISO 230-3, the tests which apply for the evaluation of therma
24、l distortions of the machine structure and positioning system, up to 2 000 mm in length, of numerically controlled (NC) turning machines and turning centres. Hence, this part of ISO 13041 defines three tests which are the environmental temperature-variation error test, the test for thermal distortio
25、n caused by a rotating spindle, and the test for thermal distortion caused by moving linear axes. It should be noted that there is no intention of assigning any numerical tolerances associated with the tests described in this part of ISO 13041. 2 Normative references The following referenced documen
26、ts are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 230-1:1996, Test code for machine tools Part 1: Geometric accuracy of machine
27、s operating under no-load or finishing conditions ISO 230-3:2001, Test code for machine tools Part 3: Determination of thermal effects ISO 13041-1:2003, Test conditions for numerically controlled turning machines and turning centres Part 1: Geometric tests for machines with a horizontal spindle 3 Te
28、rms and definitions For the purposes of this document, the terms and definitions given in ISO 13041-1 apply. BSISO130418:2004IS-14031 O8:(4002E) 2 I SO 4002 All irthgs ersedevr4 Preliminary remarks 4.1 Reference to ISO 230-3 To apply this part of ISO 13041, reference shall be made to ISO 230-3, espe
29、cially for the installation of the machine before testing, description of measuring methods and presentation of the results. 4.2 Testing sequence The tests in this part of ISO 13041 may be used either separately or in any combination. 4.3 Tests to be performed When testing a machine, it is not alway
30、s necessary or possible to carry out all the tests described in this part of ISO 13041. 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
31、are of interest. These tests are to be clearly stated when ordering a machine. Mere reference to this part of ISO 13041 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.
32、 5 Environmental Temperature Variation (ETVE) test 5.1 General ETVE tests are designed to reveal the effects of environmental temperature changes on the machine. They shall not be used for machine comparison. It is recommended that the supplier/manufacturer should offer guidelines regarding what kin
33、d of thermal environment should be acceptable for the machine to perform with the specified accuracy. It shall be the responsibility of the user to provide an acceptable thermal environment for the operation. However, if the user follows the guidelines provided by the machine supplier/manufacturer,
34、the responsibility for machine performance according to the specification reverts to the machine supplier/manufacturer. 5.2 Test method The test method shall be in accordance with those defined in 5.2 of ISO 230-3. The ETVE test should last for a minimum of 4 h; if the readings of the measuring inst
35、ruments still show any drift, the test should be continued up to a maximum of 24 h. NOTE Vertical and slant-bed axes might warm up when under NC “HOLD” command. In such cases, it is recommended to execute the ETVE test with all controls “OFF”. This should be stated in the test protocol. 5.3 Measurin
36、g instruments The measuring instruments are as follows: linear displacement probe, temperature sensors, test mandrel and data acquisition equipment. 5.4 Presentation of results Table 1 provides an example of the format for the presentation of the results; in addition, a graphical presentation of res
37、ults should be provided as specified in 5.3 of ISO 230-3:2001. BSISO130418:2004IS-14031 O8:(4002E) I SO 4002 All irthgs ersedevr 3Table 1 Format for the presentation of the ETVE results Results Parameter Category 1 Category 2 Category 3 Time min ETVE Xmm ETVE Ymm ETVE Zmm ETVE Aarcseconds ETVE Barcs
38、econds 5.5 Information to be recorded a) the name of the manufacturer; b) the year of construction, if available; c) the type and serial number; d) the location of the measurement set-up; e) the location of temperature sensors; f) the type of sensors; g) the design and material of the test mandrel a
39、nd fixture; h) the thermal compensation procedure; i) the any special test procedures; j) the time and date of test; k) the machine preparation procedure prior to testing; l) the control OFF. 6 Thermal distortion caused by rotating spindle 6.1 Number of tests One test per spindle shall be carried ou
40、t. 6.2 Test method The test method shall be in accordance with those defined in 6.2 of ISO 230-3:2001, however for practical reasons, the test procedure should be the variable speed spectrum. NOTE A possible example of the speed spectrum cycle could be a percentage of the maximum spindle speed for a
41、 set time followed by a spindle stop for another fixed time, (e.g. 70 % maximum spindle speed for 3 min followed by a 1 min stop). This cycle is then repeated for the complete test duration. The exact details of the speed spectrum needs to be discussed between the user and manufacturer/supplier. The
42、 test shall last for 4 h plus 1 h with the spindle stopped. BSISO130418:2004IS-14031 O8:(4002E) 4 I SO 4002 All irthgs ersedevr6.3 Measuring instruments The measuring instruments are as follows: linear displacement probe, temperature sensors, test mandrel and data acquisition equipment. 6.4 Presenta
43、tion of results Table 2 provides an example of the format for the presentation of the results; in addition, a graphical presentation of results should be provided as specified in 6.3 of ISO 230-3:2001. Table 2 Format for the presentation of the thermal effects caused by a rotating spindle Results Ca
44、tegory 1 Category 2 Category 3 Parameter After 60 min After end of period t Distance l After 60 min After end of period t Distance l After 60 min After end of period t Distance l X 1 m m Y 1 m m Z m m A mm/mm B mm/mm 6.5 Information to be recorded a) the name of the manufacturer; b) the year of cons
45、truction, if available; c) the type and serial number; d) the location of the measurement set-up; e) the location of temperature sensors; f) the type of sensors; g) the design and material of the test mandrel and fixture; h) the thermal compensation procedure; i) the spindle speed regime; j) the any
46、 special test procedures; k) the time and date of test; l) the machine preparation procedure prior to testing. 7 Thermal distortion caused by moving linear axes 7.1 Test method The test method shall be in accordance with those defined in 7.2 of ISO 230-3:2001. NOTE In practice, there should be diffe
47、rent feed rates for principal and auxiliary axes (e.g. for principal axes, the limits might be set at 50 % of F maxand for auxiliary axes it they might be set at 20 % of F max . The test shall last for 4 h. BSISO130418:2004IS-14031 O8:(4002E) I SO 4002 All irthgs ersedevr 57.2 Measuring instruments
48、The measuring instruments are as follows: laser interferometer or bidirectional linear displacement probes and a special test mandrel. When the laser interferometer is used, proper precautions shall be taken according to A.13 of ISO 230-1:1996. 7.3 Presentation of results Table 3 provides an example
49、 of the format for the presentation of the results, in addition, a graphical presentation of results should be provided as specified in 7.4 of ISO 230-3:2001. Table 3 Format for the presentation of the thermal effects caused by moving axes Results Category 1 Category 2 Category 3 Parameter X Y Z X Y Z X Y Z e1 +m m e2 +mm e1 m m e2 m m 7.4 Information to be recorded a) the name of the m
