1、BRITISH STANDARD BS3884:1974 Incorporating Amendment Nos.1,2 and3 Specification for Modular unitsfor machine tools Part 1: Specification for basic units UDC621.9.06112 CONFIRMED DECEMBER 2007BS3884:1974 This BritishStandard having beenapproved by the MechanicalEngineering IndustryStandards Committee
2、,was published underthe authority of the Executive Board on 22April1974 BSI12-1999 First published as BS3295:1960 and BS3884:1965 First revision as BS3884 April1974 The following BSI references relate to the work on this standard: Committee references MEE/6,MEE/6/21 Draft for approval73/33063 ISBN 0
3、 580 08400 0 Co-operating organizations The Mechanical Engineering Industry Standards Committee, under whose supervision this standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical Committ
4、ee Electricity Council, the Central Electricity Association of Consulting Engineers Generating Board and the Area Boards in Association of Hydraulic Equipment England and Wales Manufacturers Engineering Equipment Users Association Association of Mining Electrical and Federation of Manufacturers of C
5、onstruction Mechanical Engineers Equipment and Cranes British Gas Corporation Institution of Civil Engineers British Compressed Air Society Institution of Gas Engineers British Electrical and Allied Manufacturers Institution of Heating and Ventilating Association* Engineers British Gear Manufacturer
6、s Association Institution of Mechanical Engineers* British Internal Combustion Engine Institution of Plant Engineers Manufacturers Association Institution of Production Engineers* British Steel Industry London Transport Executive British Mechanical Engineering Machine Tool Trades Association* Confed
7、eration Ministry of Defence British Pump Manufacturers Association Ministry of Defence, Army Department Crown Agents for Oversea Governments and National Coal Board Administrations National Physical Laboratory (Department Department of Employment and of Trade and Industry) Productivity (HM Factory I
8、nspectorate) Process Plant Association Department of the Environment* Railway Industry Association of Great Britain Department of Trade and Industry (National Royal Institute of British Architects Engineering Laboratory)* Telecommunication Engineering Manufacturers Association The Government departm
9、ents and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this BritishStandard: Association of Scientific, Technical and Machine Tool Industry Research Associat
10、ion Managerial Staffs Society of Motor Manufacturers and Gauge and Tool Makers Association Traders Ltd Ministry of Defence, Air Force Department Trades Union Congress Ministry of Defence, Navy Department University of Aston in Birmingham National Federation of Engineers Tool Manufacturers Amendments
11、 issued since publication Amd. No. Date of issue Comments 2260 April1977 4400 October1983 6669 February1991 Indicated by a sideline in the marginBS3884:1974 BSI 12-1999 i Contents Page Co-operating organizations Inside front cover Foreword iii 1 Scope 1 2 Nomenclature 1 3 General 1 4 Designation of
12、modular units 4 5 Multi-spindle heads casing and input shaft 4 6 Headstocks 6 7 Slide units 8 8 Wing bases for slide units 10 9 Vertical columns 10 10 Wing bases for columns 11 11 Centre bases 12 12 Multi-sided centre bases for rotary tables 19 13 Rotary tables 20 14 Integral way columns base mounte
13、d type 20 15 Integral way columns floor mounted type 21 16 Support brackets 23 17 Spindle units 24 18 Flanges for multi-spindle heads 29 Figure 1 Modular units 2 Figure 2 Multi-spindle head casing 4 Figure 3 Input drive 6 Figure 4 Headstocks nominal sizes125 to250 inclusive 7 Figure 5 Headstocks nom
14、inal sizes320 to800 inclusive 8 Figure 6 Slide units 9 Figure 7 Wing bases for slide units 10 Figure 8 Vertical columns 11 Figure 9 Wing bases for columns 12 Figure 10 Centre bases 13 Figure 11 Examples of machine classification 14 Figure 12 Wing base fixing to centre base with tenons 15 Figure 13 W
15、ing base fixing to centre base with dowels 16 Figure 14 Recommended dimensions of blocks and tenons 17 Figure 15 Hole pattern for centre bases 18 Figure 16 Multi-sided centre bases for rotary tables 19 Figure 17 Rotary tables 20 Figure 18 Integral way columns base mounted type 21 Figure 19 Integral
16、way columns floor mounted type 22 Figure 20 Support brackets 23 Figure 21 Quill feed (self-feeding) single spindle drilling units 25 Figure 22 Single spindle drilling units 26 Figure 23 Single spindle milling units 27 Figure 24 Quill feed (self-feeding) single spindle drilling units with adjusting s
17、lide for tool changing 28 Figure 25 Flanges for mounting multi-spindle heads 29 Table 1 Nomenclature for modular units 3 Table 2 Dimensions of multi-spindle head casings 5BS3884:1974 ii BSI 12-1999 Page Table 3 Dimensions of input drive 6 Table 4 Dimensions of headstocks nominal sizes125 to 250 incl
18、usive 7 Table 5 Dimensions of headstocks nominal sizes320 to 800 inclusive 8 Table 6 Dimensions of slide units 9 Table 7 Dimensions of wing bases for slide units 10 Table 8 Dimensions of vertical columns 11 Table 9 Dimensions of wing bases for columns 12 Table 10 Dimensions of centre bases 13 Table
19、11 Dimensions for hole pattern for centre bases 18 Table 12 Dimensions of multi-sided centre bases for rotary tables 19 Table 13 Dimensions of rotary tables 20 Table 14 Dimensions of integral way columns base mounted type 21 Table 15 Dimensions of integral way columns floor mounted type 22 Table 16
20、Dimensions of support brackets 23 Table 17 Dimension of quill feed (self-feeding) single spindle drilling units 25 Table 18 Dimensions of single spindle drilling units 26 Table 19 Dimensions of single spindle milling units 27 Table 20 Dimensions of quill feed (self-feeding) single spindle drilling u
21、nits with adjusting slide for tool changing 28 Table 21 Dimensions of flanges for mounting multi-spindle heads 29 Publications referred to 30BS3884:1974 BSI 12-1999 iii Foreword This BritishStandard has been prepared under the authority of the Mechanical Engineering Industry Standards Committee. It
22、is in conformity with the following standards, prepared by the InternationalStandards Organization (ISO): ISO2912, “Multi-spindle heads casing and input shaft dimensions”. ISO2727, “Headstocks”. ISO2562, “Slide units”. ISO2769, “Wing bases for slide units”. ISO2934, “Wing bases for columns”. ISO2891
23、, “Centre bases and columns”. ISO3371, Rotary tables. ISO3476, Flanges for mounting multi-spindle heads. ISO3589, Integral way columns. ISO3590, Spindle units. ISO3610, Support brackets. ISO3970, Integral way columns Floor mounted type. This standard deals with those units most widely used in all ty
24、pes of transfer machines. This standard is only concerned with dimensions which effect interchangeability of units and is not intended to be a design specification. Certain related types of units which may only be suitable for particular applications are excluded (see3.2). It is to be noted that the
25、re is no interchangeability between units in this metric standard and units produced in accordance with the requirements of the imperial versions of BS3295, “Unit heads (slide type). and BS3884, “Machine tool unit construction”. Basic dimensions are generally derived from the Renard series of prefer
26、red numbers; seeBS2045, “Preferred numbers”. No attempt is made to influence the method of construction employed on the various units or the material or quality of manufacturing. NOTEExamples of machine classification are shown in Figure 11. Where technical differences exist between ISO Standards an
27、d the relevant part of this BritishStandard, details are stated in the clauses concerned. 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 o
28、f itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi to iv, pages1to30, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be
29、indicated in the amendment table on the inside front cover.iv blankBS3884:1974 BSI 12-1999 1 1 Scope 1.1 This BritishStandard specifies a nomenclature for basic modular units for machine tools. 1.2 A sizing system or classification and designation is given. 1.3 Dimensions for interchangeability are
30、specified for the following modular units: 1) Multi-spindle heads-casing and input shaft dimensions. 2) Headstocks. 3) Slide units. 4) Wing bases for slide units. 5) Vertical columns. 6) Wing bases for vertical columns. 7) Centre bases. 8) Multi-sided centre bases for rotary tables. 9) Rotary tables
31、. 10) Integral way columns base mounted type. 11) Integral way columns floor mounted type. 12) Support brackets. 13) Quill feed (self-feeding) single spindle drilling units. a) Single spindle drilling units. b) Single spindle milling units. c) Quill feed (self-feeding) single spindle drilling units
32、with adjusting slide for tool changing. 14) Flanges for mounting multi-spindle heads. NOTEThe titles of the BritishStandards referred to in this standard are listed on page 30. 2 Nomenclature For the purposes of this BritishStandard the nomenclature given in Table 1 applies (seealsoFigure 1). 3 Gene
33、ral 3.1 Work loading height. The dimensional requirements of modular units for machine tools are based on a nominal work loading height of1060mm. It should be noted that the height is measured from the underside of the machine and not from the floor on which the machine rests. 3.2 Related units. Cer
34、tain modular units frequently employed in transfer machines do not have their dimensional requirements specified in detail in this standard, because they are used for special applications. These units comprise packers (distance pieces), angular adaptors, horizontal angular adaptors, integral way win
35、g bases (horizontal or angular) and angular wing bases. When these units are manufactured the interface dimensions and designations should be compatible with the standard unit which it is either replacing or to which it is being attached. BS 3884:1974 2 BSI 12-1999 Figure 1 Modular units (continued)
36、BS3884:1974 BSI 12-1999 3 Table 1 Nomenclature for modular units (seeFigure 1)Figure 1 Modular units (concluded) Item No. Title 1 2 3 Column Multi-spindle head Headstock 4 Saddle Slide unit 5 Slide base 6 7 8 9 10 11 12 13 14 15 Wing base for slide unit Wing base for column Centre base Multi-sided c
37、entre base for rotary tables Rotary table Integral way column base mounted type Integral way column floor mounted type Support bracket Spindle unit Single spindle milling unit BS3884:1974 4 BSI 12-1999 4 Designation of modular units 4.1 A multi-spindle head casing shall be designated by the size of
38、the slide unit upon which the casing is to be mounted together with the nominal envelope dimensions: width height. 4.2 A headstock shall be designated by the size of the slide upon which it is to be mounted. 4.3 A slide unit shall be designated by the nominal width of the slide unit saddle. 4.4 A wi
39、ng base for slide units shall be designated by the basic size of slide unit which it is to accommodate. 4.5 A column shall be designated by the basic size of the slide unit which it is to accommodate. 4.6 A wing base for columns shall be designated by the basic size of the slide unit which is to be
40、accommodated upon the column. It should be noted that the width of a wing base for a column corresponds to the width of the next larger size of wing base for a given slide unit. 4.7 A centre base shall be designated by the nominal envelope dimensions: length width height. 4.8 A multi-sided centre ba
41、se for a rotary table shall be designated by the table diameter and the diameter of its inscribed circle. 4.9 A rotary table shall be designated by the table diameter, its height and the diameter of the swarf tray. 4.10 An integral way column base mounted type shall be designated by the basic size o
42、f slide unit that is integral with it. 4.11 An integral way column floor mounted type shall be designated by the basic size of slide unit that is integral with it. 4.12 A support bracket shall be designated by the nominal width of the saddle on the related slide unit. 5 Multi-spindle head casings an
43、d input shaft 5.1 The range of basic dimensions for multi-spindle head casings shall comply with Table 2. Particular selections from this range may be made at the designers discretion. 5.2 Drive input shaft dimensions shall comply with Table 3. NOTE 1Certain sizes are indicated as preferred for the
44、purposes of this BritishStandard. ISO2912 does not include this restriction. NOTE 2ISO2912 includes, for information purposes, dimensions of a location spigot concentric with the drive input shaft but as this feature is not normally used in UK practice, it has not been included. Figure 2 Multi-spind
45、le head casingBS3884:1974 BSI 12-1999 5 Table 2 Dimensions of multi-spindle head casings All dimensions in millimetres. Width of casing W Nominal size 125 160 200 250 320 400 500 630 800 Nominal height of casing H 160 125 160 200 200 125 160 160 200 200 250 250 125 160 200 160 200 250 200 250 320 32
46、0 125 160 200 250 160 200 250 320 200 250 320 400 400 160 200 250 320 200 250 320 400 250 320 400 500 500 200 250 320 400 250 320 400 500 320 400 500 630 630 250 320 400 500 320 400 500 630 400 500 630 800 800 320 400 500 630 400 500 630 800 500 630 800 1000 1000 400 500 630 800 500 630 800 1000 630
47、 800 1000 1250 1250 500 630 800 630 800 1000 800 1000 1250 Method of multi-spindle head casing designation: e.g.nominal size320 width400 height500, designation320 400 500.BS3884:1974 6 BSI 12-1999 Table 3 Dimensions of input drive 6 Headstocks 6.1 Range of nominal sizes125mm to250mm 6.1.1 Dimensions
48、 shall be in accordance with Table 4. 6.1.2 Either a tenon drive or a shaft and key drive may be used. 6.1.3 Multi-spindle heads should be located on the headstock either by means of the spigot and one dowel, or by means of two dowels (seeFigure 4). 6.2 Range of nominal sizes320mm to800mm 6.2.1 Dime
49、nsions shall be in accordance with Table 5. 6.2.2 Any suitable form of drive may be used. For this range of nominal sizes, the height of the centre of the driving spindle is not specified. 6.3 All sizes 6.3.1 For all sizes, the first holding down bolt is situated a whole multiple of25mm from the front face of the headstock. Subsequent holes are also spaced in whole multiples of25mm (seeFigure 5). 6.3.2 Headstocks sho
