EN 16983:2016

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Krožnikaste vzmeti - Specifikacije kakovosti - MereTellerfedern - Qualitätsanforderungen - MaßeRondelles ressorts - Spécification de qualité - DimensionsDisc springs - Quality specifications - Dimensions21.160VzmetiSpringsICS:Ta slovenski standard je istoveten z:EN 16983:2016SIST EN 16983:2017en,fr,de01-januar-2017SIST EN 16983:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16983
November
t r s x ICS
t sä s x r English Version
Disc springs æ Quality specifications æ Dimensions Rondelles ressorts æ Spßcification de qualitß æ Dimensions
Tellerfedern æ Qualitätsanforderungen æ Maße This European Standard was approved by CEN on
s w August
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x { z uã t r s x ESIST EN 16983:2017

(E) 2 Contents 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 abbreviated 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 Manufacturing 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 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 loading . 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 SIST EN 16983:2017

European 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”, 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 latest 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 – Dimensions”, 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 Regulations, 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, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16983:2017

(E) 4 1 Scope This standard specifies the set of requirements that ensure the correct functioning 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. This 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 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 edition 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, 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 materials - 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. NOTE 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 have flat bearings. SIST EN 16983:2017

¿F N Relaxation L0 mm Length of springs stacked in series or in parallel, in the initial position Lc mm Design 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 h0 mm Initial cone height of springs without flat bearings, h0 = l0
« t h'0 mm Initial cone height of springs with flat bearings, hB"0 = l0
« t' i
Number of disc springs or packets stacked in series l0 mm Free overall height of spring in its initial position lt mm Test length of disc spring, lt = l0
«
rá y w h0 s 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 spring t ' mm Reduced thickness of single disc spring with flat bearings (group 3) µ
Poisson’s ratio
MPa Design stress
II,
III,
OM MPa Design stresses at the points designated II, III, OM (see Figure 1) h MPa Fatigue stress related to the deflection of springs subject to fatigue loading O MPa Maximum fatigue stress U MPa Minimum fatigue stress H = O U MPa Permanent range of fatigue stress P
Theoretical centre of rotation of disc spring cross section (see Figure 1) V, V B"
Lever arms SIST EN 16983:2017
(E) 6 Symbol Unit Description Ra
Mean surface roughness 4 Dimensions and designation 4.1 General
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, De of 40 mm: Disc spring EN 16983 — A 40 4.2 Disc spring groups Table 2 — Disc spring groups Group t With flat bearings and reduced thickness 1 < 1,25 No 2 1,25
¶ t
¶ 6 No 3 6 < t
¶ 14 Yes SIST EN 16983:2017
...