1、BRITISH STANDARD BS EN ISO 7083:1995 BS 308-3.6: 1995 Technical drawings Symbols for geometrical tolerancing Proportions and dimensions The European Standard EN ISO 7083:1994 has the status of a British StandardBSEN ISO 7083:1995 This British Standard, having been prepared under the direction of the
2、 Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1995 BSI 12-1998 The following BSI references relate to the work on this standard: Committee reference TDE/4 Draft announced in BSI News August1995 ISBN 0 580 23776 1 Committees re
3、sponsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee TDE/4, Engineering drawing practice, upon which the following bodies were represented: Atomic Weapons Establishment British Gas plc British Standards Society Drawing Office Material Manu
4、facturers and Dealers Association Electricity Association Gauge and Tool Makers Association HEVAC Association Institution of Chemical Engineers Institution of Engineering Designers Power Generation Contractors Association Society of British Aerospace Companies Ltd. University of Warwick Amendments i
5、ssued since publication Amd. No. Date CommentsBS EN ISO 7083:1995 BSI 12-1998 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 0 Introduction 3 1 Scope and field of application 3 2 References 3 3 General conditions 3 4 Proportions 3 5 Dimensions 8 6 Examples
6、9 Figure 1 Straightness 3 Figure 2 Flatness 3 Figure 3 Circularity (roundness) 4 Figure 4 Cylindicity 4 Figure 5 Profile of any line 4 Figure 6 Profile of any surface 4 Figure 7 Parallelism 4 Figure 8 Perpendicularity 4 Figure 9 Angularity 5 Figure 10 Position 5 Figure 11 Concentricity and coaxialit
7、y 5 Figure 12 Symmetry 5 Figure 13 Simple runout 5 Figure 14 Total runout 5 Figure 15 Indication of toleranced feature (by reference letter) 6 Figure 16 Indication of datum (direct) 6 Figure 17 Indication of datum (by reference letter) 6 Figure 18 Datum target (ISO 5459) 7 Figure 19 Theoretically ex
8、act dimension 7 Figure 20 Projected tolerance zone 8 Figure 21 Maximum material condition 8 Figure 22a) Lettering B, vertical 9 Figure 22b) Lettering B, inclined 9 Figure 23a) Lettering B, vertical 10 Figure 23b) Lettering B, inclined 10 Table 1 Lettering type A 8 Table 2 Lettering type B 8 List of
9、references Inside back coverBSEN ISO 7083:1995 ii BSI 12-1998 National foreword This British Standard has been prepared under the direction of the Engineering Sector Board and is the English language version of EN ISO 7083:1995 Technical drawings Symbols for geometrical tolerancing Proportions and d
10、imensions, published by the European Committee for Standardization (CEN). It is identical with ISO 7083:1983, published by the International Organization for Standardization (ISO). This British Standard partially supersedes BS 308-3. It is envisaged that when the full range of European Standards on
11、technical drawing is implemented BS308 will be withdrawn. 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 immunity from le
12、gal obligations. Cross-references Publication referred to Corresponding British Standard ISO 1101:1983 BS 308 Engineering drawing practice Part 3:1990 Recommendations for geometrical tolerancing ISO 3098-1:1974 Part 1:1993 Recommendations for general principles ISO 5459:1981 Part 3:1990 Recommendati
13、ons for geometrical tolerancing Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This wi
14、ll be indicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7083 October 1994 ICS 01.100.10 Descriptors: Technical drawings, graphic methods, form tolerances, symbols, dimensions English version Technical drawings Symbols for geometrical t
15、olerancing Proportions and dimensions (ISO 7083:1983) Dessins techniques Symboles pour tolrancement gometrique Proportions and dimensions (ISO 7083:1983) Technische Zeichnungen Symbole fr Form-und Lagetolerierung Verhltnisse und Mae (ISO 7083:1983) This European Standard was approved by CEN on1994-1
16、0-14. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtaine
17、d on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secreta
18、riat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee f
19、or Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN ISO 7083:1994 EENISO 7083:1994 BSI 12-1998 2 Foreword This European Standard was taken over by CEN from the wor
20、k of ISO/TC 10, Technical drawings, product definition and related documentation, of the International Standards Organization (ISO). The Technical Board had decided to submit the final draft for Formal Vote. The result was positive. This European Standard shall be given the status of a national stan
21、dard, either by publication of an identical text or by endorsement, at the latest by April1995, and conflicting national standards shall be withdrawn at the latest by April1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard:
22、Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom.ENISO7083:1994 BSI 12-1998 3 0 Introduction The purpose of this International Standard is to give instructions for the correct e
23、xecution of the symbols for geometrical tolerancing on technical drawings (seeISO 1101 and ISO 5459), and to harmonize the dimensioning of these symbols with the lettering used for dimensioning and other indications on the drawing. 1 Scope and field of application This International Standard specifi
24、es the recommended proportions and lays down the dimensions for the symbols used to indicate geometrical tolerancing on technical drawings. The symbols and their lettering may be hand-written (using a rule for drawing the frames) or executed by means of other appropriate methods (for example, stenci
25、ls, transfers, mechanical drawing, etc.). The dimensions of the symbols are based on the standard heights of lettering given in ISO 3098/1. 2 References ISO 1101, Technical drawings Geometrical tolerancing Tolerancing of form, orientation, location and runout Generalities, definitions, symbols, indi
26、cation on drawings. 1) ISO 3098/1, Technical drawings Lettering Part1: Currently used characters. ISO 5459, Technical drawings Geometrical tolerancing Datums and datum-systems for geometrical tolerances. 3 General conditions 3.1 The lettering used with the symbols shall be in accordance with the spe
27、cifications of ISO3098/1. 3.2 It is recommended that on any one drawing the height, thickness of lines and type of lettering with the symbols be equal to those applied for the dimensioning and other indications on that drawing. 4 Proportions Examples for the proportions of the symbols and frames for
28、 use with lettering type B, vertical or inclined, are shown in Figure1 to Figure21. The configurations are depicted on a grid with a spacing equal to the thickness of line. The design of the inscribed characters is mostly not shown, but shall be the same as in ISO3098/1 for lettering typeB, vertical
29、 or inclined. For the alternative lettering type A, vertical or inclined, appropriate grids should be used, but it is understood that frames are always drawn as squares or rectangles; symbols for toleranced characteristics and additional symbols (see ISO 1101) are always to be depicted as shown in F
30、igure1 to Figure21. 1) At present at the stage of draft. (Revision of ISO/R 1101/1-1969.) Figure1 Straightness Figure2 FlatnessEN ISO 7083:1994 4 BSI 12-1998 Figure3 Circularity (roundness) Figure4 Cylindricity Figure5 Profile of any line Figure6 Profile of any surface Figure7 Parallelism Figure8 Pe
31、rpendicularityENISO7083:1994 BSI 12-1998 5 Figure9 Angularity Figure10 Position Figure11 Concentricity and coaxiality Figure12 Symmetry Figure13 Simple runout Figure14 Total runoutEN ISO 7083:1994 6 BSI 12-1998 Figure15 Indication of toleranced feature (by reference letter) Figure16 Indication of da
32、tum (direct) Figure17 Indication of datum (by reference letter)ENISO7083:1994 BSI 12-1998 7 Figure18 Datum target (ISO 5459) Figure19 Theoretically exact dimensionEN ISO 7083:1994 8 BSI 12-1998 5 Dimensions 5.1 Recommended dimensions of the symbols with lettering type A are specified in Table 1, tho
33、se for use with lettering type B in Table 2. Table 1 Lettering type A Table 2 Lettering type B Figure20 Projected tolerance zone Figure21 Maximum material condition Dimensions in millimetres Characteristic Recommended dimensions Height of frame (H) a 7 10 14 20 28 40 Height of characters (h) 3,5 5 7
34、 10 14 20 Diameter (D) b 14 20 28 40 56 80 Thickness of line (d) 0,25 0,35 0,5 0,7 1 1,4 a Where an additional tolerance value is to be inscribed in a lower compartment (seeISO1101), this height should be increased, dependent on the heights of the inscriptions. b See Figure18. Dimensions in millimet
35、res Characteristic Recommended dimensions Height of frame (H) a 5 7 10 14 20 28 40 Height of characters (h) 2,5 3,5 5 7 10 14 20 Diameter (D) b 10 14 20 28 40 56 80 Thickness of line (d) 0,25 0,35 0,5 0,7 1 1,4 2 a Where an additional tolerance value is to be inscribed in a lower compartment (seeISO
36、1101), this height should be increased, dependent on the heights of the inscriptions. b See Figure18.ENISO7083:1994 BSI 12-1998 9 5.2 The recommended widths of the frame should be: first compartment, equal to height of frame (H); second compartment, to suit the length of the inscription; third and s
37、ubsequent compartments, if required, to suit the width of the reference letter (or letters). The distances between the vertical strokes of the compartments and the inscriptions shall be at least twice the thickness of lines, with a minimum of0,7mm. 6 Examples Figure22a) Lettering B, vertical Figure2
38、2b) Lettering B, inclinedEN ISO 7083:1994 10 BSI 12-1998 Figure23a) Lettering B, vertical Figure23b) Lettering B, inclinedBS EN ISO 7083:1995 BSI 12-1998 List of references See national foreword.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
39、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British Stand
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