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1、BRITISH STANDARD BS ISO 3070-3:2007 Machine tools Test conditions for testing the accuracy of boring and milling machines with horizontal spindle Part 3: Machines with movable column and movable table ICS 25.080.20 ? Licensed Copy: London South Bank University, London South Bank University, Fri Feb
2、15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI BS ISO 3070-3:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2008 BSI 2008 ISBN 978 0 580 54352 4 National foreword This British Standard is the UK implementation of ISO
3、3070-3:2007. It supersedes BS ISO 3070-4:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to
4、 include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Licensed Copy: London South Bank University, London So
5、uth Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI Reference number ISO 3070-3:2007(E) INTERNATIONAL STANDARD ISO 3070-3 Third edition 2007-12-15 Machine tools Test conditions for testing the accuracy of boring and milling machines with horizontal spindle Part 3: Mac
6、hines with movable column and movable table Machines-outils Conditions dessai pour le contrle de lexactitude des machines alser et fraiser broche horizontale Partie 3: Machines montant mobile et table mobile BS ISO 3070-3:2007 Licensed Copy: London South Bank University, London South Bank University
7、, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope 1 2 Normative references1 3 Terminology a
8、nd designation of axes.2 4 Definition of the machining operations carried out on these machines3 4.1 Boring operations3 4.2 Milling operations4 5 Special remarks concerning particular elements.4 5.1 Spindle heads.4 5.2 Tables5 5.3 Steady blocks.5 6 Preliminary remarks 5 6.1 Measuring units .5 6.2 Re
9、ference to ISO 230-15 6.3 Testing sequence.5 6.4 Tests to be performed.5 6.5 Measuring instruments .6 6.6 Machining tests6 6.7 Software compensation 6 6.8 Minimum tolerance6 7 Geometric tests7 7.1 Straightness and angular deviations of coordinate axes7 7.2 Squareness between coordinate axes.15 7.3 T
10、able17 7.4 Indexing or rotary table.20 7.5 Boring spindle23 7.6 Milling spindle29 7.7 Ram .30 7.8 Integral facing head.33 7.9 Steady block.37 8 Machining tests38 9 Checking accuracy and repeatability of positioning by numerical control.45 10 Geometric accuracy of axes of rotation of tool-holding spi
11、ndles51 Bibliography53 BS ISO 3070-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bod
12、ies (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 committee. International organization
13、s, 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. International Standards are drafted in accordance with the rules given in the I
14、SO/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. Publication as an International Standard requires approval by at least 75 % of the
15、 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 patent rights. ISO 3070-3 was prepared by Technical Committee ISO/TC 39, Machine tool
16、s, Subcommittee SC 2, Test conditions for metal cutting machine tools. This third edition cancels and replaces ISO 3070-0:1982 and ISO 3070-4:1998, of which it constitutes a technical revision. ISO 3070 consists of the following parts, under the general title Machine tools Test conditions for testin
17、g the accuracy of boring and milling machines with horizontal spindle: Part 1: Machines with fixed column and movable table Part 2: Machines with movable column and fixed table Part 3: Machines with movable column and movable table BS ISO 3070-3:2007 Licensed Copy: London South Bank University, Lond
18、on South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI v Introduction It is generally accepted that horizontal spindle boring and milling machines fall into three categories characterized by their particular configuration: a) machines with fixed column and movable t
19、able; b) machines with movable column and fixed table; c) machines with movable column and movable table. In the past, all these types of machines and associated terminology were described in ISO 3070-0:1982. The relevant accuracy tests were described in ISO 3070-2:1997, ISO 3070-3:1997 and ISO 3070
20、-4:1998 respectively. However, ISO/TC 39/SC 2 decided to integrate the descriptions and the terminology of these machines into appropriate parts of ISO 3070 describing the accuracy tests and to renumber the parts of this series accordingly. BS ISO 3070-3:2007 Licensed Copy: London South Bank Univers
21、ity, London South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 1 Machine tools Test conditions for testing the accuracy o
22、f boring and milling machines with horizontal spindle Part 3: Machines with movable column and movable table 1 Scope This part of ISO 3070 specifies, with reference to ISO 230-1, ISO 230-2 and ISO 230-7, geometric tests, machining tests, spindle tests and tests for checking the accuracy and repeatab
23、ility of positioning by numerical control of general purpose, normal accuracy, horizontal spindle boring and milling machines having a movable column and movable table. This part of 3070 also specifies the applicable tolerances corresponding to these tests. This type of machine can be provided with
24、spindle heads of different types, such as those with sliding boring spindle and milling spindle, sliding boring spindle and facing head, or ram or milling ram. This part of ISO 3070 concerns machines having movement of the column or column saddle on the bed (X axis), vertical movement of the spindle
25、 head (Y axis), movement of the boring spindle or ram (Z axis) and, possibly, a feed movement of radial facing slide in the facing head (U axis). Some machines also have an intermediate saddle with slideways between column and bed to achieve additional movement of the column parallel to the spindle
26、axis (W axis). NOTE In ISO 3070-1 spindle ram movement is designated as the W axis. This part of ISO 3070 deals only with the verification of the accuracy of the machine. It does not apply to the operational testing of the machine (e.g. vibration, abnormal noise, stick-slip motion of components) nor
27、 to machine characteristics (e.g. speeds, feeds), as such checks are generally carried out before testing the accuracy. 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
28、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 machines operating under no- load or finishing conditions ISO 230-2:2006, Test code for machine tools Part 2: Determination of accur
29、acy and repeatability of positioning numerically controlled axes ISO 230-7:2006, Test code for machine tools Part 7: Geometric accuracy of axes of rotation ISO 1101:2004, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out BS ISO 307
30、0-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 2 3 Terminology and designation of axes 3.1 General A boring and milling machine is a machine tool in which the principal cutting motion is the rotation
31、of the cutting tool against the non-rotating workpiece and where the cutting energy is brought by the cutting tool rotation. The cutting movement is generated by the rotation of the spindle(s) and, possibly, of the facing head. 3.2 Types of movement The feed movements are as follows: a) transverse a
32、nd possible rotary movements of the table; b) vertical movement of the spindle head; c) axial movement of the spindle; d) axial movements of the column on its fixture, parallel to the axis of the spindle; e) possible movement of radial facing slide. Table 1 provides the nomenclature for various stru
33、ctural components of machines shown in Figure 1. Figure 1 shows two possible machine configurations: one with a non-rotary table and the other with an integral rotary table. Table 1 Nomenclature (see Figure 1) Figure 1 ref. English French German 1 bed banc Maschinenbett 2 column montant du chariot p
34、orte-broche Maschinenstnder 3 spindle head chariot porte-broche Spindelstock 4 column saddle tranard du montant Zwischenschlitten (fr den Spindelstock) 5 table table Aufspanntisch 6 rotary table table pivotante Drehtisch BS ISO 3070-3:2007 Licensed Copy: London South Bank University, London South Ba
35、nk University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 3 a) Machine with non-rotary table b) Machine slide with integral rotary table NOTE For components 1 to 6, see Table 1. Figure 1 Possible boring and milling machine configurations 4 Definition of the machining operations c
36、arried out on these machines 4.1 Boring operations Boring is a machining operation for generating holes of various sizes and geometries in which the principal cutting motion is the rotation of single-point cutting tool against the non-rotating workpiece and where the cutting energy is brought by the
37、 cutting tool rotation. Boring the diameter of cylindrical, conical, blind or through holes to the required size is achieved by using a boring bar to locate the cutting edge of the boring tool in a well-defined position with respect to the axis average line of the boring spindle. In the case of coax
38、ial bores situated on opposite faces of the same workpiece, the operation may be carried out using a boring bar, supported between the machine boring spindle and the steady stock located on the other side of the table. Alternatively, if the machine has a rotary table, such an operation can be carrie
39、d out by rotating the table 180 to bore the opposite side of the workpiece with the same boring tool located on the boring bar that is mounted on the boring spindle without any steady support (reverse boring). Although more economical, this alternative method requires closer tolerances for table ang
40、ular positioning as well as for the axis of rotation errors. BS ISO 3070-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 4 4.2 Milling operations Milling is a machining operation to generate non-axisymme
41、trical (non-rotational) surfaces of various geometries in which the principal cutting motion is the rotation of a cutting tool with multiple cutting edges against the non-rotating workpiece and where the cutting energy is brought by the cutting tool rotation. Milling operations mostly involve face m
42、illing or end milling. The tools are mounted either in the boring spindle taper (see Figure 2) or, as for face milling cutters, on the milling spindle nose. 5 Special remarks concerning particular elements 5.1 Spindle heads Reference should be made to Figure 2 for examples of the various types of he
43、ad. Related nomenclature is given in Table 2. Facing heads generally have a radial facing slide and are either integral or removable; the latter is considered an accessory. It should be noted that the integral facing head may not always be mounted onto the milling spindle and may have its own bearin
44、g independent from the main spindle bearings. Table 2 Nomenclature (see Figure 2) Figure 2 ref. English French German 1 boring spindle broche alser Bohrspindel 2 milling spindle broche fraiser Frsspindel 3 facing head plateau surfacer Planscheibe 4 spindle head with facing head tte de broche avec pl
45、ateau surfacer Spindelstock mit Planscheibe 5 ram coulisseau Traghlse a) Spindle head for boring and milling b) Spindle head with facing head c) Spindle head with ram NOTE For elements 1 to 5, see Table 2. Figure 2 Types of spindle head BS ISO 3070-3:2007 Licensed Copy: London South Bank University,
46、 London South Bank University, Fri Feb 15 06:44:04 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 5 5.2 Tables Tables may have rotary movements. The two main rectilinear movements, the directions of which are perpendicular to each other, are used either for positioning the table or giving specified work
47、 feeds. The rotary movement of the table may be used a) for angular positioning in the plane of the table rotation, b) as a circular work feed for milling operations, c) for circular cutting movements for turning operations. 5.3 Steady blocks Due to the decreasing use of long boring bars, there is a
48、n increasing tendency to treat steady blocks as optional parts or auxiliary equipment. 6 Preliminary remarks 6.1 Measuring units In this part of ISO 3070, all linear dimensions, deviations and corresponding tolerances are expressed in millimetres; angular dimensions are expressed in degrees, and ang
49、ular deviations and the corresponding tolerances are expressed in ratios (e.g. 0,00x/1 000) as the primary method; but in some cases microradians or arcseconds may be used for clarification purposes. The equivalence of the following expressions should always be kept in mind: 0,010/1 000 = 10 106 = 10 rad 2 arcsec 6.2 Reference to ISO 230 In applying this part of ISO 3070, reference shall be made to ISO 230-1, especially for the installation of th