1、March 2009DEUTSCHE NORM English price group 12No part of this standard 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!$VZJ“1515539www.d
2、in.deDDIN EN 15800Cylindrical helical springs made of round wire Quality specifications for cold coiled compression springsEnglish version of DIN EN 15800:2009-03Zylindrische Schraubenfedern aus runden Drhten Gtevorschriften fr kaltgeformte DruckfedernEnglische Fassung DIN EN 15800:2009-03Supersedes
3、DIN 2095:1973-05www.beuth.deDocument comprises 19 pagesDIN EN 15800:2009-03 2 National foreword This standard has been prepared by Technical Committee CEN/TC 378 “Project Committee Springs” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Ausschuss Federn
4、(Springs Standards Committee), Technical Committee A 026-01 UA Schraubenfedern. Amendments This standard differs from DIN 2095:1973-05 as follows: a) The limiting value for the wire diameter (Table 1) has been specified as 0,07 mm d 16 mm. b) The standard has been editorially revised and brought in
5、line with the current rules of presentation. Previous editions DIN 2075: 1949-07 DIN 2095: 1956-07, 1956-11, 1973-05 For more detailed information about the Ausschuss Federn (AF), please visit www.af.din.de. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15800December 2008ICS 21.160English Versio
6、nCylindrical helical springs made of round wire - Qualityspecifications for cold coiled compression springsRessorts cylindriques hlicodaux en fils ronds -Prescriptions de qualit des ressorts de compressionfaonns froidZylindrische Schraubenfedern aus runden Drhten -Gtevorschriften fr kaltgeformte Dru
7、ckfedernThis European Standard was approved by CEN on 18 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographic
8、al references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN me
9、mber into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
10、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brusse
11、ls 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15800:2008: EEN 15800:2008 (E) 2 Contents Foreword 3 1 Scope 4 2 Normative references 4 3 Representation .5 4 Definitions, symbols, units and terms .6 5 Requirements .7 5.1 Coil
12、ing direction.7 5.2 Spring ends 7 5.3 Solid length Lc7 5.4 Material .8 5.5 Surface Treatment .8 6 Quality grades 8 6.1 Permissible variations of Quality Grades .8 6.2 Permissible variations of wire diameters d .8 6.3 Permissible variations ADfor coil diameter D of unloaded spring .8 6.4 Permissible
13、variations AFfor spring force F at given spring length L .9 6.5 Permissible variations AL0for length L0of unloaded spring .9 6.6 Permissible variations e1and e2of unloaded springs with ends closed and ground 12 6.7 Production margin 12 7 Testing . 13 7.1 Static load testing . 13 7.2 Characteristic 1
14、3 7.3 Test load for pressing to solid length (settling testing) . 13 Annex A (informative) Declaration and formulas 14 Annex B (informative) Example - Specification for a Cylindrical Helical Compression Spring . 15 Bibliography . 17 DIN EN 15800:2009-03 EN 15800:2008 (E) 3 Foreword This document (EN
15、 15800:2008) has been prepared by Technical Committee CEN/TC 378 “Project Committee Springs“, the secretariat of which is held by DIN. 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 June 2009, an
16、d conflicting national standards shall be withdrawn at the latest by June 2009. 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 2095 “Helical springs made of round wire Specification for cold
17、coiled compression springs“, 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 and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Accor
18、ding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvi
19、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 15800:2009-03 EN 15800:2008 (E) 4 1 Scope This European Standard applies to cylindrical helical compression springs made of round spring wire
20、. Cold coiled compression springs can be made with wire up to about 16 mm diameter. (See also EN 13906-1). Cylindrical helical springs made of round wire from European Standard materials are subject to the limiting values in Table 1: Table 1 Characteristic Cold coiled compression springs Wire diamet
21、er 0,07 mm d 16 mm Mean coil diameter 0,63 mm D 200 mm Length of unloaded spring Lo 630 mm Number of active coils n 2 Spring index 4 w 20 A specification for the parameters of cold formed helical compression springs is given in Annex B. 2 Normative references The following referenced documents are i
22、ndispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10270-1, Steel wire for mechanical springs Part 1: Patented cold drawn unalloyed sprin
23、g steel wire EN 10270-2, Steel wire for mechanical springs Part 2: Oil hardened and tempered spring steel wire EN 10270-3, Steel wire for mechanical springs Part 3: Stainless spring steel wire EN 12166, Copper and copper alloys Wire for general purposes DIN EN 15800:2009-03 EN 15800:2008 (E) 5 3 Rep
24、resentation Dimensions in millimetres Figure 1 Type 1 Spring ends closed and ground (with theoretical characteristic) Figure 2 Type 2 Spring ends closed DIN EN 15800:2009-03 EN 15800:2008 (E) 6 4 Definitions, symbols, units and terms Table 2 Symbols Units Terms aFN Value for determining variations o
25、f spring force and spring length (effect of geometry and dimensions) ADmm Permissible variation of coil diameter (De, Di, D) of unloaded spring AFN Permissible variation of spring force F at given spring length L AL0mm Permissible variation of length L0of unloaded spring d mm Nominal diameter of wir
26、e (or bar) dmaxmm Upper deviation of d Demm Outside diameter of spring Ddmm Mandrel diameter (inner guide) Dhmm Sleeve diameter (outer guide) Dimm Inside diameter of spring D = 2ieDD +mm Mean diameter of spring e1mm Permissible variation of squareness of the unloaded ground spring e2mm Permissible v
27、ariation in parallelism of the ground spring bearing surfaces, measured for DeF N Spring force F1, F2N Spring forces for the spring lengths L1, L2(at ambient temperature of 20 C) Fc thN Theoretical spring force at solid length Lc NOTE The actual spring force at the solid length is as a rule greater
28、than the theoretical force. kf Factor for determining variations of spring force and spring length (effect of active coils) L mm Spring length L0mm Nominal free length of spring L1mm Length at smallest test load F1L1, L2mm Spring lengths for the spring forces F1, F2Lcmm Solid length Lnmm Minimum per
29、missible spring length (depending upon Sa) n Number of active coils nt Total number of coils Q Coefficient of quality grade R = sFN/mm Spring rate s1, s2.mm Spring deflections, for the spring forces F1, F2.scmm Spring deflection for the solid length Lcshmm Deflection of spring (stroke) between two p
30、ositions Samm Sum of minimum gaps between adjacent active coils at spring length Lnw = dD Spring index dL0= Slenderness ratio DIN EN 15800:2009-03 EN 15800:2008 (E) 7 5 Requirements 5.1 Coiling direction Compression springs are generally made with right-hand coiling, or with alternating right-hand a
31、nd left-hand coiling for nested spring assemblies; in this case the outer spring is usually right-hand coiled. If left-hand coiling for springs is required, this shall be obvious from the note “left-hand coiled“ which shall appear in drawings or enquiries and order documents. See Annex B. 5.2 Spring
32、 ends The spring ends whereby the spring force is transmitted to the connecting components shall be designed so that the deflection of the spring is as nearly axial as possible in every position of the spring. This is generally achieved by reducing the pitch of one finishing coil at each end. To obt
33、ain adequate bearing surfaces perpendicular to the spring axis, the wire ends are ground in accordance with Figure 1. If grinding of the spring ends is found to be inexpedient, the spring should be made according to Figure 2, that means without ground wire ends. In all cases the type of finish for t
34、he spring ends shall be stated in one of the contractual documents: descriptive, drawings or enquiries and order documents. See Annex B. If unground spring ends are acceptable for the particular use concerned, e.g. when the compression springs are made of wire having a diameter less than approximate
35、ly 1 mm or with a spring index over 15, grinding of the wire ends should be omitted for economic reasons. See Annex B. When the compression springs are made of wire having a diameter under 0,3 mm the wire ends should not be ground. With regard to the simultaneous grinding of the spring ends of compr
36、ession springs having a wire diameter from 0,3 mm up to about 5 mm it should be noted that only springs which allow adequate contact pressure can be ground flat. Tests so far carried out indicate that this contact pressure shall amount to approximately dR 0,03 N/mm2(1) The spring ends should only be
37、 deburred if this is required for proper functioning, and shall be agreed between the spring manufacturer and the customer. This information shall be included in enquiries, drawings, and orders. See Annex B. 5.3 Solid length Lc(all coils are closed) For springs with ground ends according to Figure 1
38、, the solid length is: maxtcdnL (2) For springs without ground ends according to Figure 2, the following applies: (3) where nt= n + 2 2 = Number of non-active coils ()max 51 d ,nL t c+DIN EN 15800:2009-03 EN 15800:2008 (E) 8 Springs have n 2 coils 5.4 Material The material selection shall be done in
39、 line with loading and function of the spring. The materials covered by this standard are: a) Patented cold drawn unalloyed spring steel wire to EN 10270-1. b) Oil hardened and tempered spring steel wire to EN 10270-2. c) Stainless spring steel wire to EN 10270-3. d) Wire from copper and copper allo
40、ys to EN 12166. 5.5 Surface Treatment 5.5.1 Shot-peening Springs may be shot peened, if agreed between manufacturer and customer. 5.5.2 Surface protection Either organic or inorganic coatings may be applied, if agreed between manufacturer and customer. 6 Quality grades 6.1 Permissible variations of
41、Quality Grades For springs the quality grades 1, 2 and 3 are specified (for coefficients Q see Table 4). All the permissible variations listed below apply only to material given in EN 10270. For materials in EN 12166, permissible variations shall be agreed between manufacturer and customer. The choi
42、ce between quality grades 1, 2 and 3 is governed by operational requirements. The quality grade required and the permissible variations shall be expressly agreed or stated in the drawing. In the absence of information, quality grade 2 shall apply. In the interests of rationalized production quality
43、grade 1 should be specified only when the particular use calls for it. For this purpose not all the quantities in Subclauses 6.2 to 6.6 necessarily belong to a single quality grade. If variations smaller then “1“ are required, agreements shall be made between manufacturer and customer. 6.2 Permissib
44、le variations of wire diameters d The permissible variations for wire diameter d are specified in the corresponding material standards see 5.4. 6.3 Permissible variations ADfor coil diameter D of unloaded spring For mean coil diameters D up to 200 mm, see Table 3. In drawings and in enquiries and or
45、der documents the inner diameter Di, or the external diameter Deand the mean coil diameter D shall be stated. The permissible variations specified for the mean coil diameter D apply to both the corresponding inner diameter Di and the external diameter De. In the case of springs working in a sleeve o
46、r on a mandrel, it is recommended that the smallest sleeve diameter or largest mandrel diameter also shall be stated. DIN EN 15800:2009-03 EN 15800:2008 (E) 9 Table 3 D Permissible variations ADmm Quality grade 1 with spring index w Quality grade 2 with spring index w Quality grade 3 with spring ind
47、ex w above to 4 to 8 above 8 to 14 above14 to 20 4 to 8 above8 to 14 above14 to 20 4 to 8 Above8 to 14 above14 to 20 0,63 1 0,05 0,07 0,1 0,07 0,1 0,15 0,1 0,15 0,2 1 1,6 0,05 0,07 0,1 0,08 0,1 0,15 0,15 0,2 0,3 1,6 2,5 0,07 0,1 0,15 0,1 0,15 0,2 0,2 0,3 0,4 2,5 4 0,1 0,1 0,15 0,15 0,2 0,25 0,3 0,4
48、0,5 4 6,3 0,1 0,15 0,2 0,2 0,25 0,3 0,4 0,5 0,6 6,3 10 0,15 0,15 0,2 0,25 0,3 0,35 0,5 0,6 0,7 10 16 0,15 0,2 0,25 0,3 0,35 0,4 0,6 0,7 0,8 16 25 0,2 0,25 0,3 0,35 0,45 0,5 0,7 0,9 1,0 25 31,5 0,25 0,3 0,35 0,4 0,5 0,6 0,8 1,0 1,2 31,5 40 0,25 0,3 0,35 0,5 0,6 0,7 1,0 1,2 1,5 40 50 0,3 0,4 0,5 0,6 0,8 0,9 1,2 1,5 1,8 50 63 0,4 0,5 0,6 0,8 1,0 1,1 1,5 2,0 2,3 63 80 0,5 0,7 0,8 1,0 1,2 1,4 1,8 2,4 2,8 80 100 0,6 0,8 0,9 1,2 1,5 1,7 2,3 3,0 3,5 100 125 0,7 1,0 1,1 1,4 1,9 2,2 2,8 3,7 4,4 125 160 0,9 1,2 1,4 1,8 2,3 2,7
