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1、BRITISH STANDARD BS ISO 3070-4:1998 Test conditions for boring and milling machines with horizontal spindle Testing of the accuracy Part 4: Planer type machines with movable column ICS 25.080.20; 25.080.40 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled C
2、opy, (c) BSI BS ISO 3070-4:1998 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 February 1999 BSI 05-1999 ISBN 0 580 32106 1 National foreword This British St
3、andard reproduces verbatim ISO 3070-4:1998 and implements it as the UK national standard. It supersedes BS 4656-32:1983 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools, which has the responsibility to: aid enquirers to understand
4、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 developments and promulgate them in the UK. A list of organizations represented on this c
5、ommittee 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 the section entitled “International Standards Correspondence Index”, or b
6、y 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 application. Compliance with a British Standard does not of itself confer imm
7、unity 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 40 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be
8、indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 BSI 05-1999i Contents Page National forewordInside front
9、cover Forewordiii Text of ISO 3070-41 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun,
10、 na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 ii BSI 05-1999 Contents Page Forewordiii 1Scope1 2Normative references1 3Terminology and designation of axes1 4Preliminary remarks1 4.1Measuring units1 4.2Reference to ISO 230-12 4.3Testing sequence2 4.4Tests to b
11、e performed2 4.5Measuring instruments2 4.6Machining tests2 4.7Minimum tolerance2 5Geometric tests3 5.1Straightness and angular deviations of coordinate axes3 5.2Squareness between the coordinate axes9 5.3Table11 5.4Indexing or rotary table14 5.5Boring spindle17 5.6Milling spindle22 5.7Ram23 5.8Integ
12、ral facing head26 5.9Steady block30 6Machining tests31 7Checking of accuracy and repeatability of positioning by numerical control34 Annex A (informative) Bibliography40 Descriptors: Machine tools, boring and milling machines, numerical control, positioning, tests, verification, accuracy, reproducib
13、ility, dimensional tolerances, testing conditions, dimensional measurements. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 BSI 05-1999iii Foreword ISO (the International Organization for Standardization) is a worldwide f
14、ederation 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 established has the right to be represented on that co
15、mmittee. 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. Draft International Standards adopted by the
16、 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. International Standard ISO 3070-4 was prepared by Technical Committee ISO/TC 39, Machine Tools, Subcommittee SC 2, Te
17、st conditions for metal cutting machine tools. This second edition cancels and replaces the first edition (ISO 3070-3:1982) which has been technically revised. ISO 3070 consists of the following parts, under the general title Test conditions for boring and milling machines with horizontal spindle Te
18、sting of the accuracy: Part 0: General introduction; (to become part 1 on its next revision) Part 2: Table-type machines; (formerly part 1) Part 3: Floor type machines with detached work-holding fixed table; (formely part 2) Part 4: Planer type machines with movable column. (formerly part 3) Annex A
19、 of this part of ISO 3070 is for information only. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 BSI 05-
20、19991 1 Scope This part of ISO 3070 specifies, with reference to ISO 230-1 and ISO 230-2, geometric tests, machining tests and tests for checking accuracy and repeatability of positioning by numerical control, on general purpose, normal accuracy, planer type horizontal spindle boring and milling mac
21、hines with movable column. These types of machine tool are defined in subclauses 3.2 and 3.3 of ISO 3070-0:1982. This part of ISO 3070 also specifies the applicable tolerances corresponding to the above mentioned tests. These machines can be provided with spindle heads of different types correspondi
22、ng in most cases to figures: 4 (spindle head with sliding boring spindle and milling spindle) 5 (spindle head with sliding boring spindle and with facing head) 6 (spindle head with ram or milling ram) of ISO 3070-0:1982. In addition, it should be noted that this part of ISO 3070 concerns machines wh
23、ich have movement of the table along the X-axis, a vertical movement of the spindle head along the Y-axis, a movement of the column along the W-axis and may include a rotary or indexing table. This part of ISO 3070 deals only with the verification of the accuracy of the machine. It does not apply to
24、 the testing of the machine operation (vibration, abnormal noise, stick-slip motion of components, etc.) nor to machine characteristics (such as speeds, feeds, etc.), as such checks are generally carried out before testing the accuracy. 2 Normative references The following standards contain provisio
25、ns which, through reference in this text, constitute provisions of this part of ISO 3070. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 3070 are encouraged to investigate the possibility of ap
26、plying the most recent editions of the standards indicated 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. ISO 230-2:1997,
27、Test code for machine tools Part 2: Determination of accuracy and repeatability of positioning of numerically controlled axes. ISO 1101:, Geometrical Product Specifications (GPS) Geometrical tolerancing Generalities, definitions, symbols, indication on drawings1). ISO 3070-0:1982, Test conditions fo
28、r boring and milling machines with horizontal spindle Testing of accuracy Part 0: General introduction2). 3 Terminology and designation of axes See ISO 3070-0. 4 Preliminary remarks 4.1 Measuring units In this part of ISO 3070, all linear dimensions, deviations and corresponding tolerances are expre
29、ssed in millimeters; angular dimensions are expressed in degrees, and angular deviations and the corresponding tolerances are expressed in ratios as the primary method, but in some cases microradians or arcseconds may be used for clarification purposes. The equivalence of the following expressions s
30、hould always be kept in mind: 0,010/1 000 = 10 106= 10 4rad 299 1) To be published. (Revision of ISO 1101:1983) 2) See “Foreword”. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 2 BSI 05-1999 4.2 Reference to ISO 230-1 To
31、 apply this part of ISO 3070, 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 equipment. In the Observations block of the t
32、ests 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 sequence in which the tests are presented in th
33、is part of ISO 3070 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 nor possible to carry out all the tests described in
34、 this part of ISO 3070. 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 interest. These tests are to be clearly stated when order
35、ing a machine. The mere reference to this part of ISO 3070 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. 4.5 Measuring instruments The measuring instruments indicate
36、d in the tests described in the following sections are examples only. Other instruments measuring the same quantities and having at least the same accuracy may be used. Dial gauges shall have a resolution of 0,001 mm or better. 4.6 Machining tests Machining tests shall be made with finishing cuts on
37、ly, not with roughing cuts which are liable to generate appreciable cutting forces. 4.7 Minimum tolerance When the tolerance for a geometric test is established for a measuring length different from that given in this part of ISO 3070 (See 2.311 of ISO 230-1:1996), it shall be taken into considerati
38、on that the minimum value of tolerance is 0,005 mm. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 BSI 05-19993 5 Geometric tests 5.1 Straightness and angular deviations of coordinate axes Object G 1 Checking of straightn
39、ess of the column movement (W-axis): a) in the YZ-plane (vertical plane) (EYW); b) in the ZX-plane (horizontal plane) (EXW). Diagram Tolerance(Measured deviation) a) and b) 0,02 for measuring lengths up to 1 000 0,03 for measuring lengths above 1 000 a)b) Local tolerance: 0,006 for any measuring len
40、gth of 300 Measuring instruments Straightedge, dial gauge/support and gauge blocks or optical methods or microscope and taut-wire Observations and references to ISO 230-15.232.11, 5.232.12 and 5.232.13 Table and spindle head locked. Set a straightedge on the table, parallela to the column movement (
41、W-axis) for a) vertically and b) horizontally. If the spindle can be locked, mount a dial gauge on it. If the spindle can not be locked, the dial gauge shall be mounted on the head. The stylus shall be normal to the reference face of the straightedge. Traverse the column in the W-direction and note
42、readings. a Parallel means that the readings of the dial gauge touching the straightedge at both ends of the movement are the same value and in this case, the maximum difference of the readings gives the straightness deviation. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:0
43、0 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 4 BSI 05-1999 Object G 2 Checking of angular deviations of the column movement (W-axis): a) in the YZ-plane (EAW: pitch); b) in the XY-plane (ECW: roll); c) in the ZX-plane (EBW: yaw). Diagram Tolerance(Measured deviation) a), b) and c) 0,04/1 00
44、0 a)b)c) Local tolerance: 0,02/1 000 for any measuring length of 300 Measuring instruments a) Precision level or optical angular deviation measuring instruments b) Precision level c) Optical angular deviation measuring instruments Observations and references to ISO 230-15.231.3 and 5.232.2 The level
45、 or instrument shall be placed on the movable component: a) (EAW: pitch) in the Z-axis direction (set vertically) b) (ECW: roll) in the X-axis direction (set vertically) c) (EBW: yaw) in the Z-axis direction (set horizontally) The reference level shall be located on the table, and the spindle head s
46、hall be in the middle of the travel range. When W axis motion causes an angular movement of both spindle head and work holding table, differential measurements of the two angular movements shall be made and this shall be stated. Measurements shall be carried out at a minimum of five positions equall
47、y spaced along the travel in both directions of movement. The difference between the maximum and the minimum readings shall not exceed the tolerance. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 07:22:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 3070-4:1998 BSI 05-19995 Object G 3
48、Checking of straightness of the table movement (X-axis): a) in the XY-plane (vertical plane) (EYX); b) in the ZX-plane (horizontal plane) (EZX). Diagram Tolerance(Measured deviation) a) and b) 0,02 for measuring lengths up to 1 000 Add 0,01 to the preceding tolerance for each 1 000 increase in lengt
49、h beyond 1 000 a)b) Maximum tolerance: 0,05 Local tolerance: 0,006 for any measuring length of 300 Measuring instruments Straightedge, dial gauge/support and gauge blocks or optical methods or microscope and taut-wire Observations and references to ISO 230-15.232.11, 5.232.12 and 5.232.13 Set a straightedge at the middle position of the table, parallela to the X-axis movement of the table for a) vertically and b) horizontally. If the spindle can be locked, mount a dial gauge on it. If the spindle cannot be locked, the dial gauge shall