1、DEUTSCHE NORM Januarv 2000 GO gauging members with nominal diameters from 1 mm to 40 mm DIN - 2248-1 ICs 17.040.30; 25.060.01 Supersedes November 1989 edition. Prfen geometrischer Gren - Gutlehrenkrper - Teil 1 : Fr Bohrungen von 1 mm bis 40 mm Nenndurchmesser In keeping with current practice in sta
2、ndards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker. Foreword This standard has been prepared by the Normenausschuss Technische Grundlagen (Fundamentals in Tech- nology Standards Committee). Amendments This standard dif
3、fers from the November 1989 edition in that it has been editorially revised and some minor amendments and corrections have been made to the illustrations. Previo us edit ions DIN 2248: 1951 -06; DIN 2248-1: 1967-07, 1977-09, 1985-09, 1989-1 1. All dimensions are in millimetres. 1 Scope This standard
4、 specifies requirements for cylindrical GO gauging members with a nominal diameter from 1 mm to 40 mm for use with GO and NOT GO plug gauges as specified in DIN 2245-1 and GO plug gauges as specified in DIN 2246-1. 2 Normative references This standard incorporates, by dated or undated reference, pro
5、visions from other publications. These normative references are cited at the appropriate places in the text, and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in
6、it by amendment or revision. For undated references, the latest edition of the publication referred to applies. DIN 323-1 DIN 332-1 DIN 2239 DIN 2245-1 Preferred numbers and preferred number series - Basic, calculated and rounded values 60“ centre holes -Types R, A, B, and C Gauges for use in dimens
7、ional metrology - Requirements and testing Limit plug gauges from 1 mm to 40 mm nominal diameter Continued on pages 2 and 3. Translation by DIN-Sprachendienst. In case of doubt, the German-language original should be consulted as the authoritative text. No pari of this translation may be reproduced
8、without the prior permission of V Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN 2248-1 : 2000-0 English price group 05 Sales No. 0105 12.00 Page 2 DIN 2248-1 : 2000-01 DIN 2246-1 DI
9、N 7162 DIN 7164 DIN IS0 1502 GO plug gauges from 1 mm to 40 mm nominal diameter Plain workshop and inspection gauges - Manufacturing tolerances and permissible wear Workshop plug gauges and spherical end measuring rods for IS0 fit dimensions from 1 mm to 500 mm nominal diameter - Gauge dimensions an
10、d manufacturing tolerances IS0 general-purpose metric screw threads - Gauges and gauging (IS0 1502 : 1996) 3 Dimensions and designation 3.1 Dimensions GO gauging member dimensions shall be as given in figures 1 and 2 and table 1 Type 2 GO gauging members Gauging members with a nominal diameter from
11、1 mm to 5 mm , +I50 Finished gauging members of less than 3 mm nominal diameter may have a centre point, and those with a nominal diameter from 3 mm to 40 mm may have a centre hole as specified in DIN 332-1. The form of the clearance groove shall be at the manufacturers discretion. Figure 1: GO gaug
12、ing member with dl from 1 mm to 5 mm Gauging members with a nominal diameter over 5 mm up to 40 mm Finished gauging members may have a centre hole as specified in DIN 332-1. Figure 2: GO gauging member with dl over 5 mm up to 40 mm 3.2 Designation Designation of a type Z GO gauging member designed t
13、o measure dimension 15 H8: Gauging member DIN 2248 - Z - 15 H8 Designation of a type Z GO gauging member designed to check the minor diameter of an M 12 internal thread made to 6H tolerance: Gauging member DIN 2248 - Z - M 12 - 6H Page 3 DIN 2248-1 : 2000-01 Table 1 : Dimensions of GO gauging member
14、s I) Gauging members with a length as specified here are suitable for checking holes of a length equal to about 2 x 1, (depending on the method by which the holes have been produced). For hole lengths greather than l, use of gauging members with a greather length 1, may be necessary, the length bein
15、g chosen in accordance with the R 1 O preferred number series as specified in DIN 323-1. Such gauging members count as non-standard designs. 4 Requirements Gauging members shall comply with the technical delivery conditions specified in DIN 2239. Where gauging members are designed to check dimension
16、s with the IS0 tolerance symbol, dimension dl shall comply with DIN 71 64, those designed to check dimensions with the numerical tolerance indication shall comply with DIN 71 62, and those designed to gauge internal threads shall comply with DIN IS0 1502. Other relevant standards DIN 2248-2 GO gauging members over 40 mm up to 120 mm nominal diameter DIN 2248-3 GO segmental cylindrical bar gauging members over 120 mm up to 200 mm nominal diameter DIN 2248-4 GO gauging members over 40 mm up to 250 mm nominal diameter for use in precision engineering
