1、DEUTSCHE NORM December 1996 DIN IS0 1502 - IS0 general-purpose metric screw threads Gauges and gauging (IS0 1502 : 1996) I IS0 Standard comprises 29 pages. ICs 21.040.1 O Metrisches ISO-Gewinde allgemeiner Anwendung - Lehren und Lehrung (IS0 1502 : 1996) Supersedes DIN 13-16, DIN 13-17, and DIN 13-1
2、8, January 1987 edition. This standard incorporates International Standard IS0 1502 IS0 general-purpose metric screw threads - Gauges and gauging. A comma is used as the decimal marker. National foreword This standard has been prepared by ISO/TC 1. The responsible German body involved in its prepara
3、tion was the Normenausschuss Gewinde (Screw Threads Standards Committee), Technical Committee Prfung. The DIN Standards corresponding to the International Standards referred to in clause 2 and Annex A of the IS0 Standard are as follows: IS0 Standard DIN Standard(s) IS0 1 DIN 102 IS0 68 DIN 13-19 IS0
4、 68-1 DIN IS0 68-1 IS0 965-1 DIN 13-14 and DIN 13-15 Amendments DIN 13-1 6, DIN 13-1 7, and DIN 13-1 8, January 1987 editions, have been superseded by the specifications of DIN IS0 1502. Previous editions DIN 244: 1923-12; DIN 2244: 1927-01; HgN 21549: 1943-09; HgN 21552: 1943-09; DIN 13-2: 1945-01;
5、 DIN 13-16: 1952-01, 1971-03, 1976-06, 1987-01; DIN 13-17: 1952-01, 1971-03, 1976-06, 1987-01; DIN 13-1 8: 1971 -03, 1976-06, 1987-01. National Annex NA Standards referred to (and not included in Normative references and Annex A) DIN 13-14 DIN 13-15 DIN 13-19 DIN 102 DIN IS0 68-1 DIN IS0 965-1 IS0 m
6、etric screw threads -Tolerance system for threads 1 mm in diameter and larger IS0 metric screw threads - Fundamental deviations and tolerances for screw threads of 1 mm diameter and larger IS0 metric screw threads - Basic profile and manufacturing profiles Reference temperature for measuring instrum
7、ents and workpieces IS0 general purpose screw threads - Basic profile - Part 1 : Metric screw threads IS0 general purpose metric screw threads - Tolerances - Part 1 : Principles and basic data (IS0 68-1 : 1998) (IS0 965-1 : 1998) Q No part of this standard may be reproduced without the prior permiss
8、ion of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN IS0 1502 : 1996-12 English price group 14 Sales No. 0414 08.00 Page 1 IS0 1502 : 1996 IS0 general-purpose metric screw thr
9、eads Gauges and gauging Contents Page 1 Scope 3 2 Normative references . 3 3 Symbols and abbreviations . 3 4 Types of gauges . 5 4.1 Gauges for external threads of workpieces and their check plugs and setting plugs . 5 4.2 Gauges for internal threads of workpieces 5 5 Gauging of workpieces . 5 5.1 G
10、auging of external threads . 5 5.2 Gauging of internal threads 5.3 Inspection gauging . 6 Reference temperature . 6 7 Function, checking and use of gauges . 6 7.1 Gauges for external threads of workpieces and their check plugs and setting plugs 7 7.2 Gauges for internal threads of workpieces 1 O 8 T
11、olerance zones for the diameters of gauges (see figures 1 and 2) . 1 o 9 Tolerance zones for plain gauges (see figures 3 and 4) . 13 10 Thread profiles for gauges 15 10.1 Profiles with complete flanks (see figures 5 and 6) 15 10.2 Profiles with truncated flanks (see figures 7 and 8) 18 10.3 Displace
12、ment of the clearance groove for a profile with truncated flanks . 20 11 General features of screw gauges 21 11.1 Gauges for external threads of workpieces . 21 11.2 Gauges for internal threads of workpieces 21 Page 2 IS0 1502 : 1996 11.3 Blunt start of thread . 21 12 Tolerances and permissible wear
13、 for pitch diameters of gauges (see tables 4 to 9) . 23 13 Formulae for calculation of gauge limits . 25 13.1 Screw gauges for external threads of workpieces 25 13.2 Plain gauges for the major diameters of external threads of workpieces . 25 13.3 Screw gauges for internal threads of workpieces . 25
14、13.4 Plain gauges for the minor diameters of internal threads of workpieces . 25 Annex A Bibliography 29 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is norm
15、ally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in t
16、he work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard re
17、quires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 1502 was prepared by Technical Committee iSO/TC 1, Screw threads, Subcommittee SC 4, Verification. This second edition cancels and replaces the first edition (IS0 1502:1978), which has been technically r
18、evised. Annex A of this International Standard is for information only. Page 3 IS0 1502 : 1996 1 Scope This International Standard gives details for the manufacture and use of gauges for checking IS0 general-purpose metric screw threads with a basic profile in accordance with IS0 68. It specifies th
19、e features of the types of gauges (listed in 4.1 and 4.2) which are recommended for checking external and internal screw threads of workpieces and for the setting and checking of certain of the screw gauges. It is recognized that other methods of checking may be used, for example measurements with i
20、ndicating instruments. Checking with gauges in accordance with this International Standard is always decisive. The aim of this International Standard is to provide means of distinguishing between workpiece threads that comply with the limits of size and those that do not. In order to ensure the inte
21、rchangeability of workpiece threads and to avoid disputes between the manufac- turer and purchaser, the following principles should be applied: a) the manufacturer should not deliver any work- piece thread whose actual thread size (e.g. pitch diameter and virtual pitch diameter) lies outside the spe
22、cified limits; b) the purchaser should not reject any workpiece thread whose actual thread size (e.g. pitch diam- eter and virtual pitch diameter) lies inside the specified limits. In order to satisfy these two principles, this Inter- national Standard establishes requisite types and sizes of gauges
23、 for checking screw threads, the con- ditions under which these gauges are to be used, and rules for the inspection of the workpiece threads. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard.
24、 At the time of publi- cation, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of the standards indicated below. Members of IE
25、C and IC0 maintain registers of cur- rently valid International Standards. IS0 1 :1975, Standard reference temperature for m- dustrial length measurements. IS0 68:-1, IS0 general-purpose screw threads - Basic profile. IS0 1938-1 :-*I, Inspection of piain workpieces - Part 7: Plain limit gauges. 3 Sy
26、mbols and abbreviations The symbols and abbreviations used in the text and figures in this International Standard are listed in table 1. 1) To be published. (Revision of IS0 68:1973) 2) To be published. Page 4 IS0 1502 : 1996 Symbol or abbrevi- ation b, - adjustable GO screw ring gauges; - check plu
27、gs (GO and NOT GO) for new solid GO screw ring gauges; - setting plugs for adjustable GO screw ring gauges; - wear check plugs for solid or adjustable GO screw ring gauges; - GO screw calliper gauges: - setting plugs for GO screw calliper gauges; - NOT GO screw calliper gauges; - setting plugs for N
28、OT GO screw calliper gauges; - solid NOT GO screw ring gauges; - adjustable NOT GO screw ring gauges; - check plugs (GO and NOT GO) for new solid NOT GO screw ring gauges; - setting plugs for adjustable NOT GO screw ring gauges; - wear check plugs for solid or adjustable NOT GO screw ring gauges; -
29、plain GO ring gauges; - plain GO calliper gauges; - plain NOT GO calliper gauges: - plain NOT GO ring gauges; - check plugs for new plain GO calliper gauges; - check plugs for new plain NOT GO calliper gauges; - wear check plugs for plain GO calliper gauges. 4.2 Gauges for internal threads of workpi
30、eces The following types are recommended: - GO screw plug gauges; - NOT GO screw plug gauges; - plain GO plug gauges; - plain NOT GO plug gauges. 5 Gauging of workpieces It is not necessary to use all the gauges mentioned in clause 4. However, in gauging the limits (checking that the tolerances have
31、 been respected), it is essen- tial that a GO and NOT GO gauging always be carried out with one of the GO screw gauges and one of the NOT GO screw gauges referred to in 4.1 and 4.2. 5.1 Gauging of external threads Preferably a solid or adjustable GO screw ring gauge should be used for gauging an ext
32、ernal thread. To save time, for convenience in checking, or in cases where a GO screw ring gauge is not applicable, a GO screw calliper gauge may be used. It is, however, recommended that gauging with GO screw calliper gauges should be supplemented by random sampling with a GO screw ring gauge, so t
33、hat when a large number of parts are checked with a GO screw calliper gauge, a certain percentage receives an additional check with a GO screw ring gauge, thus giving greater assurance of interchangeability be- tween the workpiece threads. A GO screw calliper gauge should not be used if the manufact
34、uring process is likely to cause deviations in the workpiece thread, which this gauge is not certain to detect, for example local pitch errors in milled threads or burrs at the start of the thread. Further- more, a GO screw calliper gauge is not suitable for checking non-rigid parts, for example thi
35、n-walled parts which would be deformed by this gauge. In these cases, checking should be carried out with a GO screw ring gauge. Similarly, only solid or adjustable NOT GO screw ring gauges should be used for non-rigid workpieces, for example thin-walled parts which would be deformed by checking wit
36、h a NOT GO screw calliper gauge. A NOT GO screw calliper gauge is used for checking the simple pitch diameter of an external thread. Page 6 IS0 1502 : 1996 GO and NOT GO gauges are used for gauging the major diameter of an external thread of a workpiece. Whether a calliper or ring gauge is used is d
37、etermined by the form and rigidity of the workpiece. Plain ring gauges should be used on non-rigid parts (see IS0 1938-1). 5.2 Gauging of internal threads GO and NOT GO screw plug gauges are used for gauging internal threads of a workpiece; GO and NOT GO plain plug gauges are used for gauging the mi
38、nor diameter of a workpiece thread (see IS0 1938-1 1. 5.3 Inspection gauging 5.3.1 By the manufacturer In general, the inspection department that checks the threads made in a workshop may use the same kind of gauges as are used in the workshop. Disagreement between manufacturing and inspection can o
39、ccur when products close to the limits of sizes are gauged. When disputes do arise, it is recommended that the product be accepted if it is shown to be satisfactory by any gauge of the type concerned known to be within the requirements of this International Standard (taking into consideration the ad
40、missible wear). In cases of dispute, checking of the ring gauges by check plugs is decisive if there is no other agreement between the manufacturer and purchaser. NOTE 1 The possibility of disputes can be reduced to a minimum by grading the gauges so that those used by manufacturers provide a more s
41、tringent check than those used on inspection. Generally, this can be achieved by issuing to the workshops new or only slightly worn GO gauges and slightly worn NOT GO gauges. Inspection should be made with GO gauges which are approaching the condition of maximum permissible wear and with new NOT GO
42、gauges. 5.3.2 By the purchaser There are three possible procedures, as listed below, for inspection of workpiece threads on behalf of the purchaser by an inspector who does not belong to the manufacturing plant concerned. a) The inspector gauges the workpiece threads with the manufacturers gauges. I
43、n this case, the accuracy of the gauges used may be checked by means of check plugs and setting plugs which belong either to the manufacturing plant (manufacturer) or to the inspector (pur- chaser) or, as far as screw plugs are concerned, by direct measurement. The inspector uses his own gauges for
44、gauging the workpiece threads. In cases of dispute it is recommended that the product be accepted if it is shown to be satisfac- tory by any gauge of the type concerned known to be within the requirements of this International Standard (taking into consideration the admissible wear). The inspector u
45、ses his own inspection gauges for gauging the workpiece threads. The position of the tolerance zone for these gauges shall be such as to ensure that the pur- chaser does not reject threads whose actual size lies within the limits specified for the workpiece. This International Standard does not spec
46、ify which gauges are to be used by the inspector; it only rec- ommends that the purchaser inform the manufacturer when ordering what procedure will be employed for the inspection of the workpiece threads. Worn gauges shall not be used for sample inspection. 6 Reference temperature In accordance with
47、 IS0 1, the dimensions of both the gauge and the workpiece are related to a temperature of 20 “C. If the workpieces and gauges have the same coef- ficient of linear expansion (e.g. steel workpieces and steel gauges), the checking temperature may deviate from 20 “C without detriment to the results, p
48、rovided that the temperatures of both gauges and workpieces are the same. If the workpieces and gauges have different co- efficients of linear expansion e.g. steel workpieces and carbide gauges or brass workpieces and gauges of steel (or carbide), the temperature of both shall be (20 f 2) “C at the
49、time of gauging. Otherwise the difference between the thermal expansions of the workpiece and the gauge shall be taken into consid- eration. 7 Function, checking and use of gauges Throughout this clause, the designations of para- graphs are as follows: a) function; Page 7 IS0 1502 : 1996 b) control; c) use. 7.1.2 Screw check plugs for new solid GO screw ring gauges a) GO and NOT GO screw check plugs are used to check the limits of the pitch diameter of a new solid GO screw ring gauge. A GO screw check plug checks the GO limit of the total profile of a new solid GO screw ring gauge. The
