1、STD.BSI 65 EN IS0 2203-ENGL 1997 M lb2Libb7 0bb4284 253-1 BRITISH STANDARD Technical drawing - Conventional representation of gears NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPRIGm LAW BS EN IS0 2203 : 1997 BS 308 : Section 1.16 : 1997 STD-BSI BS EN IS0 2201-ENGL 1997 m 162Ybbq Obb1i
2、28S LqT BS EN IS0 2203 : 1997 National foreword This British Standard is the English language vemion of EN IS0 2203 : 1997. It is identical with Is0 2203 : 1973. It pariMy supersedes BS 308 : Part 1 : 1993. It is envisaged that when the full range of European Standards on technical drawing is implem
3、ented BS 308 will be withdrawn. The UK participation in its preparation was entrusted to Technical Conunittee TDW4, Engineering drawing, Mekology, Precision measurement and all related documentation, which has the responsibility to: - aid enquirers to understand the text; - present to the responsibl
4、e intemationai/European committee any enquines on the interpretation, or proposals for change, and keep the UK interests informed; - monitor reiated intemational and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request
5、to its secretuy. 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 don entitied Intemationai Standards Correspondence Index, or by using the Find facility of the BSI Standar
6、ds Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. This itish Standard, having been prepared under the direction of the EngUieering Sector Board, was pubiished under the authority of the Sandards Board and comes ino effect on 15 Dec
7、ember 1997 D BSI 1997 Summary of pages This document comprises a front cover, an inside front cover, the EN Is0 titie page, the EN IS0 foreword page, the IS0 title page, the Is0 foreword page, pages 1 to 6, an inside back cover and a back cover. Amendments issued since publication ID 21.200 Descript
8、ors: See IS0 document English version Technical drawings - Conventional representation of gears (IS0 2203: 1 973) Dessins techniques - Aeprfhmlation conventionnelle des engrenages (IS0 2203:1973) Technische Zeichnungen - Darstellung von Zahnrdem (IS0 2203:1973) This European Standard was approved by
9、 CEN on 12 September 1997. CEN members are bound to comply with lhe CEWCENELEC Internal Regulations which slipulate the conditions for giving this European Standard the status of a national standard without any alteration. Upto-dale lists and bibllographical references concerning such national stand
10、ards may be obtained on application lo the Central Secretariat or to any CEN member. This European Standard exists in three offcial 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 t
11、he Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, ennany, Greece, Iceland, Ireland. Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United
12、Kingdom. EUROPEAN COMMiTIEE EOR STANDARDIZATION EUROPISCHES KOMITEE FOR NORMUNG COMITE EUROPEN DE NORMALISATION Central Sacretartit: rue de Stassart, 36 8-1050 Bruiseh Q 1997 CEN Ail rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 22O3
13、:1997 E STD-BSI EIS- EN IS0 2203-ENGL 1797 LbZ4bb7 Obb4287 Tb2 W EN IS0 2203 : 1997 Foreword The text of the International Standard from Technical Committee ISO/TC 1 O “Technical drawings, product definition and related documentation“ of the International Organization for Standardization (IS01 has b
14、een taken over as an European Standard by CENKS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 1998, and conflicting national standards shall be withdrawn at the latest by April 1998. Acco
15、rding to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal
16、, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard IS0 2203:1973 has been approved by CEN as a European Standard without any modification. I STD-BSI BS EN IS0 2203- 1777 m 1b24bb7 Obb4288 T EN IS0 2203 : 1997 INTERNATIONAL STANDARD 2203 INl
17、EllNAnONAL ORGANIZATION FOR STANDARDIZATION .MEXLIYWAWLWAR OPAHHUUHR no CTAHMPTXULU(H .ORGANISATION INTERNATIONALE OE NORMALISATION Technical drawings - Conventional representation of gears First edition - 1973-03-15 SYD-BSI BS EN IS0 2203-ENGL 2997 = lb24bbfbb428f 835 EN IS0 2203 : 1997 FOREWORD IS
18、0 (the International Organization for Standardization) is a worldwide federation of national standards institutes (IS0 Member Bodies). The work of developing International Standards is carried out through IS0 Technical Committees. Every Member Body interested in a subject for which a Technical Commi
19、ttee has been set up has the right to be represented on that Committee. International organizations, governmental and nongovernmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval b
20、efore their acceptance as International Standards by the IS0 Council. international Standard IS0 2203 was drawn up by Technical Committee ISO/TC 10, Technical drawings, and circulated to the Member Bodies in January 1971. It has been approved by the Member Bodies of the following countries : Austral
21、ia Austria Belgium Canada Chile Czechoslovakia Denmark Egypt, Arab Rep. of France Germany Greece Hungary India Ireland Israel Italy Japan Korea, Dem.P.Rep. of Korea, Rep. of Netherlands New Zealand Norway No Member Body expressed disapproval of the document. Port uga I Romania South Africa, Rep. of
22、Sweden Switzerland Turkey United Kingdom U.S.A. U.S.S. R. 0.cripton : drawings, engineering drawings, ears. chain wheels, represe.ntation. STD-BSI BS EN-SO 2203-ENGL 1997 W 1b24bb7 Obb4270 557 E EN IS0 2203 : 1997 Technical drawings - Conventional representation of gears 1 SCOPE AND FIELD OF APPLICA
23、TION This International Standard establishes the conventional representation of the toothed portion of gears including worm gearing and chain wheels. It is applicable to detail drawings and assembly drawings. As a fundamental principle a gear is represented (except in axial section) as a solid part
24、without teeth, but with the addition of the pitch surface in a thin long chain line. NOTE - For uniformity all figures in this International Standard are in first angle projection (Method E). It should be understood that the third angle projection (Method A) could equally well have been used without
25、 prejudice to the principles established. - - = - - - e * 2 DETAIL DRAWINGS (INDIVIDUAL GEARS) VI * 2.1 Contours and edges Represent the contours and the edges of each gear (see Figures 1,2 and 31, as if they were, - in an unsectioned view, a solid gear bounded by the tip surface; - in an axial sect
26、ion, a spur gear having two diametrically opposed teeth, represented unsectioned, even in the case of a gear that does not have spur teeth or that has an odd number of teeth. 2.2 Pitchsurface Draw the pitch surface with a thin, long chain line, even in concealed portions and sectional views, and rep
27、resent it, - in a projection normal to the axis, by its pitch circle (external pitch circle in the case of a bevel gear and the median pitch circle in the case of a worm wheel) (see Figures 1,2 and 3); - in a projection parallel to the axis, by its apparent contour, extending the line beyond the gea
28、r contour on each side (see Figures 1,2 and 3). FIGURE 1 I 1 I + 2) if both gears are represented in axial section, in which case one of the two gears, chosen arbitrarily, is assumed to be partly concealed by the other (see Figure 9). In these two cases, concealed contour edges need not be represent
29、ed if they are not essential to the clarity of the drawing (see Figures 9 and 10). FIGURE 8 FIGURE 9 FIGURE 10 3 STD.BSBS EN IS0 223-ENGL 1997 Lb24bb7 Obb4293 2bb EN IS0 2203 : 1997 L FIGURE 11 3.1 External engagement of cylindrical gym 32 Intwnal engagement of cylindrical gears FIGURE 12 FIGURE 13
30、STD-BSI BS EN IS0 2203-ENGL 1997 1b2LibbS Obb4294 IT2 EN IS0 2203 : 1997 3.3 Engagement of pinion with rack FIGURE 14 3.4 Engagement of bevel gears, axis intersection at any angle FIGURE 15 5 STD-BSI BS EN IS0 2203-ENGL 1977 m 1b2Libb7 Obb4275 O37 EN IS0 2203 : 1997 3.5 Engagement with cylindrical w
31、orm, in cross-section FIGURE 16 3.6 Chain wheels - I FIGURE 17 6 2203 : 1997 BS 308 : 1997 Section 1.16 : BSI BSI - British Standards Institution 389chiswic,HighRoad London w4 4AL BSI is the independent naional body responsible for preparing British Standards. It presents the UK view on standards in
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