1、BRITISH STANDARD BS ISO 6155:1998 Machine tools Test conditions for horizontal spindle turret and single spindle automatic lathes Testing of the accuracy ICS 25.080.10BSISO6155:1998 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe
2、authority of the Standards Board and comes intoeffect on 15 June1998 BSI 06-1999 ISBN 0 580 29815 9 National foreword This British Standard reproduces verbatim ISO6155:1998 and implements it as the UK national standard. It supersedes BS4656-31:1982 which is withdrawn. The UK participation in its pre
3、paration 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; mon
4、itor related 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 doc
5、ument 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 British Standard does not purport to include all the necessary provisions of a contract. Users of
6、British Standards 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, theISO title page, pagesii toiv, pages1 to30 a
7、nd 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. Date CommentsBSISO6155:1998 BSI 06-1999 i Contents Page National forewo
8、rd Inside front cover Foreword iii Text of ISO6155 1ii blankBSISO6155:1998 ii BSI06-1999 Contents Page Foreword iii Introduction 1 1 Scope 1 2 Normative references 1 3 Definitions 2 4 Machine size range 9 5 Preliminary remarks 9 5.1 Measuring units 9 5.2 Reference to ISO230-1 9 5.3 Testing sequence
9、9 5.4 Tests to be performed 9 5.5 Measuring instruments 9 5.6 Machining tests 9 5.7 Machine levelling 9 6 Geometric tests 10 6.1 Work spindle 10 6.2 Slide bases 14 6.3 Turret 16 7 Machining tests 25 8 Testing of accuracy and repeatability of positioning by numerical control 28 Annex A (informative)
10、Bibliography 30 Figure 1 Capstan Lathe 2 Figure 2 Turret lathe 3 Figure 3 Combination turret lathe 4 Figure 4 Cross-feeding turret lathe 5 Figure 5 Single spindle automatic lathe 6 Figure 6 Linear turret lathe 7 Figure 7 Different types of turret 8 Table 1 Criteria and ranges 9 Descriptors: Machine
11、tools, automatic equipment, lathes, turret lathes, tests, verification, accuracy, testing conditions.BSISO6155:1998 BSI 06-1999 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Inte
12、rnational 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 liaison wi
13、th 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 technical committees are circulated to the member bodies for voting. Publication as a
14、n International Standard requires approval by at least75 % of the member bodies casting a vote. International Standard ISO6155 was prepared by Technical Committee ISO/TC39, Machine tools, Subcommittee SC2, Test conditions for metal cutting machine tools. This first edition of ISO6155 cancels and rep
15、laces ISO6155-1:1981 and ISO6155-2:1986 which have been combined in this technical revision. Annex A of this International Standard is for information only.iv blankBSISO6155:1998 BSI 06-1999 1 Introduction ISO/TC39/SC2 recognized the fact that machines described in this International Standard repres
16、ent obsolescent technology. Nevertheless, there is no Standard available for machines that represent current technology. Therefore, ISO/TC39/SC2 responded to the request for revision of this Standard by combining ISO6155-1 andISO 6155-2 into a single standard and adding positioning tests. 1 Scope Th
17、is International Standard describes, with reference to ISO230-1 and ISO230-2, geometric tests, machining tests and tests for accuracy and repeatability of numerically-controlled positioning axes on general purpose and normal accuracy turret and single spindle automatic lathes. It also specifies the
18、applicable tolerances corresponding to the above-mentioned tests. This International Standard applies only to lathes with a multi-tool turret. This turret can be manually indexed, semi-automatically indexed by motion of the turret slide or automatically indexed by an independent control including nu
19、merical control. Lathes with sliding headstock are excluded from the scope, but lathes with numerical control are included as far as the contents of this International Standard are applicable. This International Standard deals only with the verification of accuracy of the machine. It does not apply
20、to the operational testing of the machine (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 provi
21、sions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the po
22、ssibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO68-1:, ISO general purpose screw threads Basic profile Part1: Metric screw threads 1) . ISO230-1:1996, Test code for machine tools P
23、art1: Geometric accuracy of machines operating under no-load or finishing conditions. ISO230-2:1997, Test code for machine tools Part2: Determination of accuracy and repeatability of positioning of numerically controlled axes. ISO1101:, Geometrical Product Specifications (GPS) Geometrical tolerancin
24、g Generalities, definitions, symbols, indication on drawings 2) . ISO3442:1991, Self-centring chucks for machine tools with two-piece jaws (tongue and groove type) Sizes for interchangeability and acceptance test specifications. 1) To be published. (Partial revision of ISO68:1973) 2) To be published
25、. (Revision of ISO1101:1983)BSISO6155:1998 2 BSI 06-1999 3 Definitions Some possible machine architectures referred to this International Standard are given in the following figures. Figure 1 Capstan LatheBSISO6155:1998 BSI 06-1999 3 Figure 2 Turret latheBSISO6155:1998 4 BSI 06-1999 Figure 3 Combina
26、tion turret latheBSISO6155:1998 BSI 06-1999 5 Figure 4 Cross-feeding turret latheBSISO6155:1998 6 BSI 06-1999 Figure 5 Single spindle automatic latheBSISO6155:1998 BSI 06-1999 7 All these types of lathe are manufactured with a variety of turret configurations. The most common types of configurations
27、 are designated types A, B, C (see Figure 7) and D and are described below. turret type A circular or multi-sided turret whose axis of rotation intersects the work spindle axis. Whether or not the turret axis is perpendicular to the work spindle axis, the axis of each turret bore must align with the
28、 work spindle axis in its working position. Tools may be located in the bore or recess, attached to the flat turret face or located and clamped in the bore itself turret type B multi-sided turret whose axis of rotation does not intersect the work spindle axis but is parallel or at a right angle to i
29、t. Special toolholders mounted and located on the turret sides (faces) are required turret type C circular (drum or disc type) turret whose axis of rotation is parallel to the work spindle axis. Tools are located in turret bores, which are parallel to the turret axis, and the turret axis is arranged
30、 so that the work spindle axis aligns with the axes of the turret bores in their working positions turret type D linear turret where tools are set on the cross slide. The necessary tool comes to the working position by the cross slide linear movement (see Figure 6) Figure 6 Linear turret latheBSISO6
31、155:1998 8 BSI 06-1999 Figure 7 Different types of turretBSISO6155:1998 BSI 06-1999 9 4 Machine size range The machines are classified into three ranges, on the basis of the criteria indicated in Table 1. Table 1 Criteria and ranges 5 Preliminary remarks 5.1 Measuring units In this International Sta
32、ndard, all linear dimensions, deviations and corresponding tolerances are expressed in millimeters; angular dimensions 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
33、purposes. The equivalence of the following expressions should always be kept in mind. 0,010/1000 =10 10 6= 10 4rad . 2 5.2 Reference to ISO230-1 To apply this International Standard, reference shall be made toISO230-1, especially for the installation of the machine before testing, warming up of the
34、spindle and other moving components, description of measuring methods and recommended accuracy of testing equipment. In the “Observations” block of the tests described in the following sections, the instructions are followed by a reference to the corresponding clause in ISO230-1 in cases where the t
35、est concerned is in compliance with the specifications of that part ofISO230. 5.3 Testing sequence The sequence 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
36、be performed in any order. 5.4 Tests to be performed When testing a machine, it is not always necessary or possible 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
37、/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 ordering a machine. Mere reference to this International Standard for the acceptance tests, without specifying the tests to be carried out, and
38、without agreement on the relevant expenses, can not be considered as binding for any contracting party. 5.5 Measuring instruments The measuring instruments indicated in the tests described in the following sections are examples only. Other instruments measuring the same quantities and having at leas
39、t the same accuracy may be used. Dial gauges shall have a resolution of0,001 millimeters or better. 5.6 Machining tests Machining tests shall be made with finishing cuts only, not with roughing cuts which are liable to generate appreciable cutting forces. 5.7 Machine levelling Prior to conducting te
40、sts on a machine, the, machine should be levelled according to the recommendations of the supplier/manufacturer. (See3.11 ofISO230-1:1996.) Criteria Range0 Range1 Range2 Swing diameter over the bed # 250 250 D # 400 400 D # 800 Nominal bar diameter # 25 25 d # 63 63 d Nominal chuck diameter as defin
41、ed in ISO3442 # 125 125 d # 250 250 d NOTEThe choice of the criterion is at the supplier/manufacturers discretion.BSISO6155:1998 10 BSI 06-1999 6 Geometric tests 6.1 Work spindle Object G1 Checking of work spindle nose: a) b) c) Run-out of the centring diameter on the spindle nose; Periodic axial sl
42、ip; Camming of the spindle face. Diagram Tolerance (Measured deviation) a) b) c) Range0 0,010 0,008 0,012 Range1 0,010 0,010 0,015 Range2 0,015 0,010 0,020 a) b) c) Measuring instruments Dial gauge and possible special device Observations and references to ISO230-1 A force F, specified by the suppli
43、er/manufacturer of the machine, shall be exerted towards the housing. When preloaded bearings are used, no force need be applied to the spindle. a) 5.612.2 When the surface is conical, the stylus of the dial gauge shall be normal to the conical surface. b) 5.622.1 and5.622.2 c) 5.632 Spindle face ma
44、y be at spindle nose c) depending upon the design of the machine.BSISO6155:1998 BSI 06-1999 11 Object G2 Checking of work spindle internal bore: a) Run-out of the spindle locating bore. (This test applies only to machines with a locating bore for work holding fixture.) b) Run-out of the work spindle
45、 internal taper. 1) at the spindle nose; 2) at a distance of300mm from the spindle nose. (This test applies only to machines with internal taper spindle bore.) Diagram Tolerance (Measured deviation) a) b) 1) 2) Range0 0,008 0,008 0,012 Range1 0,010 0,010 0,015 Range2 0,015 0,020 0,030 a) b) 1) 2) Me
46、asuring instruments Dial gauge Observations and references to ISO230-1 a) and b) 5.612.3BSISO6155:1998 12 BSI 06-1999 Object G3 Checking of run-out of the collet housing in the spindle nose (for draw-back collets): 1) Using a special test mandrel a) at the spindle nose; b) at a distance of l mm. Alt
47、ernative 2) By touching directly, a) the front seating cone; b) the back register. Diagram Tolerance (Measured deviation) 1) a) b) Range0 0,010 0,015 l =50 Range1 0,015 0,030 l =100 Range2 0,015 0,030 l =100 1) a) b) 2) a) and b) 0,008 0,010 0,010 2) a) and b) Measuring instruments 1) Test mandrel a
48、nd dial gauge 2) Dial gauge Observations and references to ISO230-1 5.612.3BSISO6155:1998 BSI 06-1999 13 Object G4 Checking of run-out of the collet internal seating in the spindle (for closing sleeve type collets): 1) Using a special test mandrel a) at the spindle nose; b) at a distance of l mm. Al
49、ternative 2) By touching directly, a) the front seating cone; b) the back register; c) internal surface of the nut. Diagram Tolerance (Measured deviation) 1) a) b) Range0 0,015 0,02 l =50 Range1 0,02 0,04 l =100 Range2 0,02 0,04 l =100 1) a) b) 2) a) and b) c) 0,008 0,012 0,01 0,015 0,015 0,02 2) a) and b) c) Measuring instruments 1) Test mandrel and dial gauge 2) Dial gauge Observations and references to ISO230-1 5.612.3BSISO6155:1998 14 BSI 06-1999 6.2 Slide bases Object G5 Checking of squarene
