1、May 2004DEUTSCHE NORM Translation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Ve
2、rlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.160!$Zv)“1558306www.din.deDDIN 2099-2Helical springs made of round wire and rod Part 2: Information to be given in order to obtain the cold formedtension springs required, printed form BZylindri
3、sche Schraubenfedern aus runden Drhten und Stben Teil 2: Angaben fr kaltgeformte Zugfedern, Vordruck BSupersedesDIN 2099-2:1973-11www.beuth.deDocument comprises pages6DIN 2099-2:2004-05 Contents Page Foreword. 3 1 Scope . 3 2 Normative references . 3 3 Designation . 4 4 Application rules. 4 Annex A
4、(normative) Form DIN 2099 B Standard form for supplying information on cold formed helical tension springs5 Bibliography .6 2 DIN 2099-2:2004-05 Foreword This standard has been prepared by Ausschuss Federn (Springs Standards Committee AF) of DIN Deutsches Institut fr Normung e.V. The standard form i
5、n Annex A to this standard in which to give information on cold formed helical tension springs is intended to facilitate the processing of enquiries and orders and to avoid misunderstandings. When submitting enquiries or orders for cold formed helical tension springs, it is recommended using the sca
6、led-down version of Form B given in Annex A to this standard. Form B can be ordered from Beuth Verlag GmbH, D-10772 Berlin. Copying the form with the information “according to DIN 2099-2” is permitted. Form B is designed so that it can also be used as a manufacturing drawing. DIN 2099 “Helical sprin
7、gs made of round wire and rod” consists of: Part 1: Information to be given in order to obtain the cold formed compression springs required, printed form A Part 2: Information to be given in order to obtain the cold formed tension springs required, printed form B Part 3: Information to be given in o
8、rder to obtain the hot formed compression springs required, printed form C Amendments The following amendments have been made to DIN 2099-2:1973-11: a) The title of the standard has been extended to include the expression “cold formed” compression springs. b) Form B has been revised; some symbols ha
9、ve been replaced by others in international use according to more recent spring standards. c) The standard has been editorially revised. Previous editions DIN 2099-2: 1963-02, 1973-11 1 Scope This standard applies without restriction solely to cold formed helical tension springs made from wire and b
10、ar. It specifies a form in A4 format according to DIN EN ISO 216 for the information to be supplied on these tension springs. NOTE 1 When designing tension springs from sectional steel, it shall be noted that non-standardized sections cannot always be supplied. In many cases, the square section can
11、be replaced by a circular cross-section. NOTE 2 If tension springs made of sectional steels cannot be avoided in special cases, e.g. for installation reasons, it is necessary to consult the spring manufacturer. The form can then be completed according to corresponding agreements about design and per
12、missible deviations. 3 DIN 2099-2:2004-05 2 Normative references This standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, s
13、ubsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). DIN 2097:1973-05, Helical springs made of round wir
14、e Quality specifications for cold formed tension springs DIN EN 13906-2, Cylindrical helical springs made from round wire and bar Calculation and design Part 2: Extension springs DIN EN ISO 216, Writing paper and certain classes of printed matter Trimmed sizes; A and B series (ISO 216:1975) 3 Design
15、ation Designation of a form for information on cold formed tension springs: Form DIN 2099 B 4 Application rules It will not always be necessary to complete the whole scheme provided in the form. Primarily the information required for the specific application of the springs is sufficient. Dimensional
16、 values not required for processing can be placed in brackets. No tolerances are given for dimensions in brackets, e.g. the spring rate R. The form is generally applicable for all cold formed tension springs with open loops or hooks as illustrated in Figures 1 to 9 and Figure 14 of DIN 2097:1973-05.
17、 For cold formed tension springs without open loops or hooks, as shown in Figures 10 to 13 of DIN 2097:1973-05, for example, or for other special types, an additional drawing shall be supplied with the form. In this case, the associated drawing shall be mentioned in Box 12 of the form. If it is nece
18、ssary in special cases to indicate deviating or additional dimensions for open loops or hooks, they can be added to the figure on the form. Tension springs are usually manufactured with “interior” pretensioning. The magnitude of this depends on the quality of the wire, the diameter and the winding r
19、atio. In order to facilitate efficient production, the maximum possible tolerances according to DIN 2097 shall always be included with the data on inner or outer coil diameter Di or De, nominal free length of the spring L0, and spring forces F0to Fn. The “production compensation” described in DIN 20
20、97 shall be taken into account. 4 DIN 2099-2:2004-05 5 Annex A (normative) Form DIN 2099 B Standard form for supplying information on cold formed helical tension springs Only enter important data and place a cross in the relevant circle. Avoid redundant dimensioning! If necessary, add the index k to
21、 (see DIN EN 13906-2). For efficient production, select the largest tolerances possible! d = . mm m = . mm De= mm . Di= mm D = . mm LK=. mm LH=. mm L0=. mm L1= mm L2= mm Ln= mm sh= mm F1= . N 1= N/mm2 F2= . N 2= N/mm2 Fn= N n N/mm2 = F0 = N 0= N/mm2 aGive tolerance on Deor Di! Tolerances according t
22、o DIN 2097:1973-05 1 Number of active coils n Quality 1 2 3 2 Direction of coils right-hand O left-hand O De, DiO O O L0O O F1 to FnO O O Loop position O O 3 Type and position of loop Loops according to DIN 2097:1973-05, Figure Loop or hook openings mutually offset by (in right-hand screw direction)
23、 Loop projecton O O O 4 Deflection of spring (stroke) between two positions sh= mm 10 Wire diameter d depending on semi-finished product used acc. to . O acc. to O acc. to DIN . 5 Frequency of loading f = min1Production compensation provided by: 6 Operating temperature range from to C a) if a spring
24、 force, the associated length of the stressed springs and L0are specified F0and O D L0and O d 7 Wire or bar surface drawn O rolled O b) if a spring force, the associated length of the stressed springs and F0are specified L0and O Di8 Surface protection L0and O D F0and O Di9 Material according to DIN
25、Permissible shear stress zul= 2mmN(according to DIN EN 13906-2, Figure .) calculated with modulus of elasticity in shear G = 2mmN11 c) if two spring forces and the associated lengths of the stressed springs are specified 12 Additional information: Date Name Done Tested Standard Cold formed tension s
26、pring Page (Company) (Drawing number) St. Amd. Date Name (orig.) (Repl. for: ) (Repl. by: ) Figure A.1 Form DIN 2099 B (scaled down) DIN 2099-2:2004-05 6 Bibliography DIN 2077, Spring steel, round, hot rolled Dimensions, permissible deviations on dimension and form DIN 2095, Helical springs made of
27、round wire Quality specifications for cold-coiled compression springs DIN 2096-1, Helical compression springs made of round wire and rod Quality requirements for hot formed compression springs DIN 2096-2, Cylindrical coil compression springs made from round rods Quality requirements for mass product
28、ion DIN 2098-1, Helical springs made of round wire Dimensions for cold formed compression springs with wire diameter from 0,5 mm upwards DIN 2098-2, Helical springs made of round wire Dimensions for cold formed compression springs with wire diameter of less than 0,5 mm DIN 2099-1, Helical springs ma
29、de of round wire and rod Part 1: Information to be given in order to obtain the cold formed compression springs required, printed form A DIN 2099-3, Helical springs made of round wire and rod Part 3: Information to be given in order to obtain the hot formed compression springs required, printed form
30、 C DIN 17221, Hot-rolled steels for springs suitable for quenching and tempering Technical delivery conditions DIN EN 10218-2, Steel wire and wire products General Part 2: Wire dimensions and tolerances DIN EN 10270-1, Steel wire for mechanical springs Part 1: Patented cold drawn unalloyed steel wir
31、e DIN EN 10270-2, Steel wire for mechanical springs Part 2: Oil hardened and tempered spring steel wire DIN EN 10270-3, Steel wire for mechanical springs Part 3: Stainless spring steel wire DIN EN 12166, Copper and copper alloys Wire for general purposes DIN EN 13906-1, Cylindrical helical springs made from round wire and bar Calculation and design Part 1: Compression springs
