DIN EN 16983-2017 Disc springs - Quality specifications - Dimensions German version EN 16983 2016《盘形弹簧 质量规范 尺寸规格 德文版本EN 16983-2016》.pdf

1、September 2017 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.160!%m=T“2742649www.din.deD

2、IN EN 16983Disc springs Quality specifications Dimensions;English version EN 16983:2016,English translation of DIN EN 16983:2017-09Tellerfedern Qualittsanforderungen Mae;Englische Fassung EN 16983:2016,Englische bersetzung von DIN EN 16983:2017-09Rondelles ressorts Spcification de qualit Dimensions;

3、Version anglaise EN 16983:2016,Traduction anglaise de DIN EN 16983:2017-09SupersedesDIN EN 16983:201702www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 23 pages 08.17 2 A comma is used as the decimal ma

4、rker. National foreword This document (EN 16983:2016) has been prepared by Technical Committee CEN/TC 407 “Cylindrical helical springs made from round wire and bar Calculation and design” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Fe

5、dern, Stanzteile und Blechformteile (DIN Standards Committee Springs, Stamped Parts and Moulded Parts), Working Committee NA 026-00-02 AA “Disc springs”. For additional information regarding DIN Standards Committee Springs, Stamped Parts and Moulded Parts (NAFS), visit us at www.din.de/go/nafs. Amen

6、dments This standard differs from DIN 2093:2013-12 as follows: a) the German Standard DIN 2093:2013-12 has been adopted as a European Standard with identical technical content. Compared with DIN EN 16983:2017-02, the following corrections have been made to the German version: a) in 4.1, Figure 1 a),

7、 the dimension Dehas been corrected. Previous editions DIN 2093: 1957-07, 1967-04, 1978-04, 1990-09, 1992-01, 2006-03, 2013-02, 2013-12 DIN 2093 Corrigendum 1: 2007-07 DIN EN 16983: 2017-02 DIN EN 16983:2017-09 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16983 November 2016 ICS 21.160 Engli

8、sh Version Disc springs - Quality specifications - Dimensions Rondelles ressorts - Spcification de qualit - Dimensions Tellerfedern - Qualittsanforderungen - Mae This European Standard was approved by CEN on 15 August 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations wh

9、ich 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 obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This E

10、uropean 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members

11、 are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

12、 Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form an

13、d by any means reserved worldwide for CEN national Members. Ref. No. EN 16983:2016 EEN 16983:2016 (E) 2Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms, definitions, symbols, units and abbreviated terms . 4 3.1 Terms and definitions . 4 3.2 Symbols, units and abbreviate

14、d terms 5 4 Dimensions and designation . 6 4.1 General 6 4.2 Disc spring groups 6 4.3 Dimensional series . 7 5 Spring material 7 6 Spring dimensions, nominal sizes, design values 7 6.1 Dimensional series A . 7 6.2 Dimensional series B . 8 6.3 Dimensional series C 9 7 Manufacture . 10 7.1 Manufacturi

15、ng process and surface quality . 10 7.2 Heat treatment 11 7.3 Shot peening . 11 7.4 Presetting 11 7.5 Surface treatment and corrosion protection . 11 8 Tolerances 12 8.1 Tolerances on diameter . 12 8.2 Tolerances on thickness 12 8.3 Tolerances on free overall height, l0. 12 8.4 Tolerances on spring

16、load . 13 8.4.1 Single disc springs 13 8.4.2 Springs stacked in series . 13 8.5 Clearance between disc spring and guiding element 14 9 Creep and relaxation . 14 10 Permissible stresses 16 10.1 Static and rarely alternating loading 16 10.2 Dynamic loading . 16 10.2.1 General . 16 10.2.2 Permissible l

17、oading . 17 11 Testing 19 11.1 General . 19 11.2 Check of dimensions and other spring characteristics 19 11.3 Hardness testing . 20 12 Other relevant requirements . 20 Bibliography . 21 DIN EN 16983:2017-09 EN 16983:2016 (E) 3 European foreword This document (EN 16983:2016) has been prepared by Tech

18、nical Committee CEN/TC 407 “Cylindrical helical springs made from round wire and bar - Calculation and design”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lat

19、est by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. This European Standard has been prepared by the initiative of the Association of the European Spring Federation ESF and is based on the German Standard DIN 2093 “Disc springs Quality specifications Dime

20、nsions”, which is known and used in many European countries. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Re

21、gulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,

22、 Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16983:2017-09 EN 16983:2016 (E) 4 1 Scope This standard specifies the set of requirements that ensure the correct functi

23、oning of disc spring. These include requirements relating to the materials and manufacturing process, tolerances on dimensions and spring forces, and also the permissible relaxation and fatigue life of such springs as a function of stress. All requirements specified here are minimum requirements. Th

24、is standard covers three dimensional series of disc springs. NOTE In this standard, disc springs are divided into three groups and three dimensional series. Classification into groups is based on the manufacturing process, which is a function of the material thickness. The assignment of disc springs

25、 to dimensional series is governed by the h0/t ratio. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest e

26、dition of the referenced document (including any amendments) applies. EN 1654, Copper and copper alloys - Strip for springs and connectors EN 10083 (all parts), Steels for quenching and tempering EN 10089, Hot-rolled steels for quenched and tempered springs - Technical delivery conditions EN 10132-4

27、, Cold rolled narrow steel strip for heat treatment - Technical delivery conditions - Part 4: Spring steels and other applications EN 10151, Stainless steel strip for springs - Technical delivery conditions EN ISO 3269, Fasteners - Acceptance inspection (ISO 3269) EN ISO 6507 (all parts), Metallic m

28、aterials - Vickers hardness test (ISO 6507) EN ISO 6508 (all parts), Metallic materials - Rockwell hardness test (ISO 6508) 3 Terms, definitions, symbols, units and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the terms and definition given in EN ISO 26909 apply. NO

29、TE Disc springs are annular coned elements that offer resistance to a compressive load applied axially. They may be designed as single disc springs or as disc springs stacked in parallel or in series, either singly or in multiples. They may be subjected to both static and fatigue loading, and may ha

30、ve flat bearings. DIN EN 16983:2017-09 EN 16983:2016 (E) 5 3.2 Symbols, units and abbreviated terms For the purposes of this document, the following symbols, units and abbreviated terms apply. Table 1 Symbols, units and abbreviated terms Symbol Unit Description Demm Outer diameter of spring Dimm Inn

31、er diameter of spring D0mm Diameter of centre of rotation E MPa Modulus of elasticity F N Spring load FcN Design spring load when spring is in the flattened position FtN Test load for length Ltor ltF N Relaxation L0mm Length of springs stacked in series or in parallel, in the initial position Lcmm D

32、esign length of springs stacked in series or in parallel, in the flattened position N Number of cycles to failure R N/mm Spring rate W N mm Energy capacity of spring h0mm Initial cone height of springs without flat bearings, h0= l0 t h0mm Initial cone height of springs with flat bearings, h0= l0 t i

33、 Number of disc springs or packets stacked in series l0mm Free overall height of spring in its initial position ltmm Test length of disc spring, lt= l0 0,75 h0s mm Deflection of single disc spring s1, s2, s3. mm Spring deflections related to spring loads F1, F2, F3 t mm Thickness of single disc spri

34、ng t mm Reduced thickness of single disc spring with flat bearings (group 3) Poissons ratio MPa Design stress II, III, OMMPa Design stresses at the points designated II, III, OM (see Figure 1) hMPa Fatigue stress related to the deflection of springs subject to fatigue loading OMPa Maximum fatigue st

35、ress UMPa Minimum fatigue stress H= O UMPa Permanent range of fatigue stress P Theoretical centre of rotation of disc spring cross section (see Figure 1) V, V Lever arms DIN EN 16983:2017-09 EN 16983:2016 (E) 6 Symbol Unit Description RaMean surface roughness 4 Dimensions and designation 4.1 General

36、 a) without flat bearings: b) with flat bearings: Group 1 Group 2 Group 3 Figure 1 Single disc spring of group 1, 2 or 3 (sectional view), including the relevant points of loading Designation of a disc spring of dimensional series A with an outer diameter, Deof 40 mm: Disc spring EN 16983 A 40 4.2 D

37、isc spring groups Table 2 Disc spring groups Group t With flat bearings and reduced thickness 1 50: 2 IT12; Di: tolerance class H12. 8.2 Tolerances on thickness Table 8 Tolerances on thickness Group t Tolerances 1 0,2 t 0,6 + 0,02 0,06 0,6 t 1,25 + 0,03 0,09 2 1,25 t 3,8 + 0,04 0,12 3,8 t 6,0 + 0,05

38、 0,15 3 6,0 t 14,0 0,10 8.3 Tolerances on free overall height, l0Table 9 Tolerances on free overall height, l0Group t Tolerances 1 t 1,25 + 0,10 0,05 2 1,25 t 2,0 + 0,15 0,08 2,0 t 3,0 + 0,20 0,10 3,0 t 6,0 + 0,30 0,15 3 6,0 t 14,0 0,30 DIN EN 16983:2017-09 EN 16983:2016 (E) 13 8.4 Tolerances on spr

39、ing load 8.4.1 Single disc springs The spring load Ftshall be determined at test length lt= l0 0,75 h0. The measurement is taken while loading between flat plates, using a suitable lubricant. The flat plates shall be hardened, ground, and polished. Table 10 Tolerances on spring load Group t Toleranc

40、es for Ftat lt= l0 0,75 h0, % 1 t 1,25 + 25 7,5 2 1,25 t 3,0 + 15 7,5 3,0 t 6,0 + 10 5 3 6,0 t 14,0 5 To comply with the specified load tolerances, it may be necessary to exceed the tolerance values specified for l0and t. 8.4.2 Springs stacked in series Figure 2 Loading and unloading curves obtained

41、 from testing springs stacked in series Ten single disc springs stacked in series shall be used to determine the deviation in load between the loading curve and the unloading curve. Prior to testing, the disc spring shall be compressed to twice its test load, Ft. The individual disc springs shall be

42、 centred by a mandrel in compliance with Clause 12. The clearance between disc springs and mandrel shall be as specified in Table 12. The flat plates shall meet the requirements specified in 8.4.1. At Lt= L0 7,5 h0, the spring load determined for the unloading curve shall make up at least the minimu

43、m percentages specified in Table 11 of the spring load determined for the loading curve (see also Figure 2). DIN EN 16983:2017-09 EN 16983:2016 (E) 14 Table 11 Minimum spring load at unloading, as a percentage of the spring load at loading at Lt Group Series A B C 1 90 85 2 92,5 87,5 3 95 90 8.5 Cle

44、arance between disc spring and guiding element A guiding element is necessary to keep the disc spring in position. This should be preferably a mandrel. In the case of external positioning, a sleeve is preferred. Table 12 Recommended clearance between disc spring and guiding element Dior DeTotal clea

45、rance Up to 16 0,2 Over 16 up to 20 0,3 Over 20 up to 26 0,4 Over 26 up to 31,5 0,5 Over 31,5 up to 50 0,6 Over 50 up to 80 0,8 Over 80 up to 140 1,0 Over 140 up to 250 1,6 9 Creep and relaxation All disc springs lose load during usage. Depending on the application, this is expressed by creep or rel

46、axation. Both creep and relaxation are largely a result of the stress distribution over the cross section of the disc spring. Its influence can be estimated on the basis of the design stress OM(seeEN 16984:2016, Clause 9). Creep is defined as the further decrease in length of the disc spring with ti

47、me, l, when subjected to a constant load. Relaxation is defined as the decrease in load with time, F, when the disc spring is compressed to a constant length. For disc springs under static load, the guideline values for relaxation illustrated in Figures 3 and 4 should not be exceeded. DIN EN 16983:2

48、017-09 EN 16983:2016 (E) 15Key Y relaxation F/F100 % X OMin MPa 1 after 1 000 h 2 after 48 h Figure 3 Permissible relaxation for disc springs made of carbon steel in accordance with EN 10132-4 DIN EN 16983:2017-09 EN 16983:2016 (E) 16 Key Y relaxation F/F100 % X OMin MPa 1 after 1 000 h 2 after 48 h

49、 Figure 4 Permissible relaxation for disc springs made of alloy steel in accordance with EN 10089 and EN 10132-4 If the ambient temperature exceeds 100 C, the spring manufacturer should be consulted. 10 Permissible stresses 10.1 Static and rarely alternating loading For disc springs made of steels according to EN 10089 or EN 10132-4, which are subject to