BS ISO 10791-2-2001 Test conditions for machining centres - Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis.pdf

1、BRITISH STANDARD BS ISO 10791-2:2001 Test conditions for machining centres Part 2: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis) ICS 25.080. NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS ISO 10791-

2、2:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 580 37274 X National foreword This British Standard reproduces verbatim ISO

3、 10791-2:2001 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 responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-re

4、ferences The British Standards which implement international publications referred to in this document may 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 B

5、ritish Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; presen

6、t 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 developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an in

7、side front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 41 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsReference number ISO 10791-2:2001(E) INTERNATION

8、AL STANDARD ISO 10791-2 First edition 2001-03-01 Test conditions for machining centres Part 2: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis) Conditions dessai des centres dusinage Partie 2: Essais gomtriques des machines bro

9、che verticale ou ttes universelles axe principal de rotation vertical (axe Z vertical)ISO 10791-2:2001(E) ii ISO 10791-2:2001(E)iii Contents Page Foreword.iv Introduction.v 1 Scope 1 2 Normative references 1 3 Preliminary remarks 2 3.1 Measuring units .2 3.2 Reference to ISO 230-12 3.3 Testing seque

10、nce.2 3.4 Tests to be performed .2 3.5 Measuring instruments .2 3.6 Diagrams.2 3.7 Pallets .2 3.8 Software compensation 3 3.9 Machine configurations 3 3.10 Designation 3 3.11 Minimum tolerance 3 4 Geometric tests6 4.1 Straightness of linear motions.6 4.2 Angular deviations of linear motions 9 4.3 Sq

11、uareness between linear motions .12 4.4 Spindle 15 4.5 Table or pallet.20 4.6 Supplementary axis (W-axis) parallel to the Z-axis24 Annex A (normative) Optional horizontal spindles .26 Annex B (normative) Rotary heads .32 Annex C (normative) Swivel heads .34 Bibliography41ISO 10791-2:2001(E) iv Forew

12、ord 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. Each member body interested in a subject for which a techni

13、cal 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 International Electrotechnical Commission (IEC) on all matters of e

14、lectrotechnical 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 to the member bodies for voting. Publication as an International Standard requir

15、es 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 part of ISO 10791 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO

16、 10791-2 was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 2, Test conditions for metal cutting machine tools. ISO 10791 consists of the following parts, under the general title Test conditions for machining centres: Part 1: Geometric tests for machines with horizontal sp

17、indle and with accessory heads (horizontal Z-axis) Part 2: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis) Part 3: Geometric tests for machines with integral indexable or continuous universal heads (vertical Z-axis) Part 4: Ac

18、curacy and repeatability of positioning of linear and rotary axes Part 5: Accuracy and repeatability of positioning of work-holding pallets Part 6: Accuracy of feeds, speeds and interpolations Part 7: Accuracy of a finished test piece Part 8: Evaluation of the contouring performance in the three coo

19、rdinate planes Part 9: Evaluation of the operating times of tool change and pallet change Part 10: Evaluation of the thermal distortions Part 11: Evaluation of the noise emission Annexes A, B and C form a normative part of this part of ISO 10791.ISO 10791-2:2001(E)v Introduction A machining centre i

20、s a numerically controlled machine tool capable of performing multiple machining operations, including milling, boring, drilling and tapping, as well as automatic tool changing from a magazine or similar storage unit in accordance with a machining programme. The purpose of ISO 10791 is to supply inf

21、ormation as wide and comprehensive as possible on tests and checks which can be carried out for comparison, acceptance, maintenance or any other purpose. ISO 10791 specifies, by reference to the relevant parts of ISO 230, Test code for machine tools, several families of tests for machining centres w

22、ith horizontal or vertical spindle or with universal heads of different types, standing alone or integrated in flexible manufacturing systems. ISO 10791 also establishes the tolerances or maximum acceptable values for the test results corresponding to general purpose and normal accuracy machining ce

23、ntres. ISO 10791 is also applicable, totally or partially, to numerically controlled milling and boring machines, when their configuration, components and movements are compatible with the tests described herein.INTERNATIONAL STANDARD ISO 10791-2:2001(E)1 Test conditions for machining centres Part 2

24、: Geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis (vertical Z-axis) 1 Scope This part of ISO 10791 specifies, with reference to ISO 230-1, the geometric tests for machining centres (or numerically controlled milling machines, boring machines, e

25、tc., where applicable) with vertical spindle (that is vertical Z-axis). This part of ISO 10791 applies to machining centres having basically three numerically controlled axes, that is three linear axes (X, Y and Z) of up to 2 000 mm length, but also refers to supplementary motions, such as rotary ax

26、es (A,B and C ), those of rams, quill, or universal heads. Motions other than those mentioned are considered as special features and the relevant tests are not included in this part of ISO 10791. This part of ISO 10791 describes geometric tests for optional horizontal spindles as well as for two pos

27、sible types of universal heads in the following annexes: annex A: optional horizontal spindles (tests AG1 to AG6); annex B: rotary heads, with one numerically controlled rotary axis (tests BG1 and BG2); annex C: swivel heads, with two numerically controlled rotary axes perpendicular to each other (t

28、ests CG1 to CG7). This part of ISO 10791 deals only with the verification of the accuracy of the machine. It does not apply to the testing of the machine operation, which should be checked separately. Some tests concerning the performance of the machine operating under no-load or finishing condition

29、s are included in other parts of ISO 10791. 2 Normative references The following normative documents contain provisions, which, through reference in this text, constitute provisions of this part of ISO 10791. For dated references, subsequent amendments to, or revisions of, any of these publications

30、do not apply. However, parties to agreements based on this part of ISO 10791 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. Member

31、s 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 8526-1:1990, Modular units for machine tools Workholding pallets Part 1: Workholding

32、 pallets up to 800 mm nominal size. ISO 8526-2:1990, Modular units for machine tools Workholding pallets Part 2: Workholding pallets of nominal size greater than 800 mm.ISO 10791-2:2001(E) 2 3 Preliminary remarks 3.1 Measuring units In this part of ISO 10791, all linear dimensions, deviations and co

33、rresponding 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 for the sake of clarity, microradians or arcseconds are used. The equivalence of the following express

34、ions should always be kept in mind: 0,010/1 000 = 10 rad 2 3.2 Reference to ISO 230-1 To apply this part of ISO 10791, 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

35、methods and recommended accuracy of testing equipment. When the operation concerned is in accordance with the specifications of ISO 230-1, the instructions in the “Observations” box of the operations described in clause 4 and annexes A to C are followed by a reference to the corresponding paragraph

36、in ISO 230-1. 3.3 Testing sequence The sequence in which the tests are presented in this part of ISO 10791 in no way defines the practical order of testing. With a view to making the mounting of instruments or gauging easier, tests may be performed in any order. 3.4 Tests to be performed When testin

37、g a machine, it is not always necessary or possible to carry out all the tests described in this part of ISO 10791. 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 prop

38、erties of the machine which are of interest. These tests shall be clearly stated when ordering a machine. The mere reference to this part of ISO 10791 for the acceptance tests, without specifying the tests to be carried out and without agreement on the relevant expenses, cannot be considered as bind

39、ing for any of the contracting parties. 3.5 Measuring instruments The measuring instruments indicated in the tests described in clause 4 and annexes A to C are examples only. Other instruments measuring the same quantities and having at least the same accuracy may be used. Dial gauges shall have a r

40、esolution of at least 0,001 millimetres. 3.6 Diagrams For reasons of simplicity, the diagrams in this part of ISO 10791 illustrate only a few types of machines. 3.7 Pallets For the machines working with several pallets, the tests concerning the intrinsic geometric features or their behaviour related

41、 to the axes of the machine (tests G15 to G20) shall be performed on only one representative pallet clamped in position, unless otherwise specified by a written agreement between the user and the supplier/manufacturer.ISO 10791-2:2001(E)3 3.8 Software compensation When software facilities are availa

42、ble for compensating some geometric deviations, based on an agreement between the user and the supplier/manufacturer, the relevant tests may be carried out with or without these compensations. When the software compensations are used, this shall be stated in the test results. 3.9 Machine configurati

43、ons The machines considered in this part of ISO 10791 are divided into 12 families based on their architecture and the components moving along the linear axes. These families are identified by means of numbers from 01 to 12, as shown in Figure 1. The classification for these families is shown in Tab

44、le 1 1) . 3.10 Designation A designation is also supplied in order to define the architecture of a machining centre, using a short code; this designation is given by the following elements, in the given order: a) “Machining centre”; b) the reference to this part of ISO 10791, that is ISO 10791-2; c)

45、 the letter V for “vertical spindle”; d) the number indicated in the relevant box of Figure 1 and the left-hand column of Table 1. EXAMPLE A machining centre, vertical spindle type, with the table moving along the X-axis, the column moving along the Y-axis and the spindle head moving along the Z-axi

46、s is designated as follows: Machining centre ISO 10791-2 type V07 3.11 Minimum tolerance When establishing the tolerance for a measuring length different from that given in this part of ISO 10791 (see 2.311 of ISO 230-1:1996), it shall be taken into consideration that the minimum value of tolerance

47、is 0,005 mm. 1) Some vertical machining centres are built with an architecture similar to type V10 (portal type) or V11 (gantry type) but with only one column. This part of ISO 10791 is applicable to them as well. In this case, and when necessary, the text should be modified by replacing the terms “

48、portal” or “gantry” with “column”,a nd“cross rail” with “arm”.ISO 10791-2:2001(E) 4 01 02 03 04 05 06 07 08 09 10 11 12 Figure 1ISO 10791-2:2001(E)5 Table 1 Classification of configurations of vertical spindle machining centres X X Y Y Z Z 01 Table on its saddle Table saddle on the bed Spindle head

49、on the column 02 Column on the bed Table on the bed Spindle head on the column 03 Table on its saddle Table saddle on the knee Knee on the column 04 Table saddle on the bed Table on its saddle Spindle head on the column 05 Column on its saddle Column saddle on the bed Spindle head on the column 06 Knee on its saddle Spindle head on the column Knee saddle on the column 07 Table on the bed Column on the bed Spindle head on the column 08 Column saddle on the bed Column on its saddle Spindle head on the c