BS-7568-4-1992 ISO-10243-1991.pdf
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1、BRITISH STANDARD BS 7568-4: 1992 ISO 10243: 1991 Press tools Part 4: Compression springs with rectangular section Housing dimensions and colour coding Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1
2、992 This British Standard, having been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 1 May 1992 BSI 11-1999 The following BSI references relate to the work on this st
3、andard: Committee reference MTE/12 Draft for comment 90/74313 DC ISBN 0 580 20720 X Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Machine, Engineers and Hand Tools Standards Policy Committee (MTE/-) to Technical Committee MTE/12, upon
4、which the following bodies were represented: Advanced Manufacturing Technology Research Institute Gauge and Tool Makers Association Amalgamated Engineering Union Coopted member Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank Uni
5、versity, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 BSI 11-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Technical specifications1 2.1Tolerances for the free length, Lo1 2.2Spring rate light1 2.3Spring rate medium5 2.4Spr
6、ing rate strong9 2.5Spring rate extra strong13 3Designation17 Figure 11 Table 11 Table 22 Table 36 Table 410 Table 514 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 ii BSI 11-1999 National fore
7、word This Part of BS 7568 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee. It is identical with ISO 10243:1991 “Tools for pressing Compression springs with rectangular section Housing dimensions and colour coding”, prepared by Technical Commi
8、ttee ISO/TC 29, Small Tools, and published by the International Organization for Standardization (ISO). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Stand
9、ard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 17 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be ind
10、icated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 BSI 11-19991 1 Scope This International Standard sets out the technical specifications for
11、 compression springs made from rectangular wires. The spring parameters apply to springs that are set. It does not attempt to specify the quality of the springs themselves, nor all of their dimensions (e.g. cross-section), their material, or their length of life. The springs are classified into the
12、spring rates: light, medium, strong, and extra strong. For each spring rate this International Standard gives a colour code. 2 Technical specifications See Figure 1 and 2.1 to 2.5. 2.1 Tolerances for the free length, Lo See Figure 1 and Table 1. Table 1 2.2 Spring rate light Colour code: Green See F
13、igure 1 and Table 2. Figure 1 Lo Tolerance mm% 25 32 38 44 51 64 3 76 89 102 115 2,5 127 139 152 178 203 254 305 2 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 2 BSI 11-1999 Table 2 Hole diame
14、terRod diameterFree length Required force to deflect 1 mm Maximum operating deflection DHDdLo H15 mm h15 mmmm 10 % Nmm 251010,3 328,513,1 386,815,6 10544618 51520,9 644,326 763,231,2 3051,1125 2517,910,3 3216,413,1 3813,615,6 4412,118 12,56,35111,420,9 649,326,3 767,131,2 895,436,5 3051,4125 2523,41
15、0,3 3222,913,1 3819,315,6 4417,118 1685115,720,9 6410,726,3 761031,2 898,636,5 1027,841,8 3052,5125 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 BSI 11-19993 Table 2 Hole diameterRod diameterF
16、ree length Required force to deflect 1 mm Maximum operating deflection DHDdLo H15 mm h15 mmmm 10 % Nmm 2555,810,2 324512,5 3833,315 443018 5124,520 642025 2010761630 891435 1021241 11510,946 1279,551 1398,456 1527,561 3054122 2510010,2 3280,312,5 386215 4452,918 514420 6435,225 762830 2512,5892435 1
17、0221,141 11518,746 12716,751 13915,356 1521461 17812,571 20310,481 3057122 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 4 BSI 11-1999 Table 2 Hole diameterRod diameterFree length Required forc
18、e to deflect 1 mm Maximum operating deflection DHDdLo H15 mm h15 mmmm 10 % Nmm 389415 4479,518 516720 645325 764430 8937,235 1023241 32161152946 1272551 1392356 15221,561 17818,271 20315,881 25412,5102 30510,3122 519220 647325 766330 895135 1024341 11539,646 40201273751 1393256 1522861 17825,271 203
19、22,781 25417102 30514,8122 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 BSI 11-19995 Table 2 2.3 Spring rate medium Colour code: Blue See Figure 1 and Table 3. Hole diameterRod diameterFree le
20、ngth Required force to deflect 1 mm Maximum operating deflection DHDdLo H15 mm h15 mmmm 10 % Nmm 6415625 7612530 8910935 1029441 1158146 50251277151 13966,556 1526061 1785271 2034481 25435102 30528,5122 7618930 8915835 10213141 11511646 633812710351 15284,361 17871,571 20361,781 25447102 30538,2122
21、Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 6 BSI 11-1999 Table 3 Hole diameterRod diameterFree length Required force to deflect 1 mm Maximum operating deflection DHDdLo H15 mm h15 mmmm 10 %
22、Nmm 25169,5 321312,2 3811,914,4 1054410,316,7 518,919,4 647,524,3 765,328,9 3051,6116 25309,5 3224,812,2 3821,414,4 4418,516,7 12,56,35115,519,4 6412,124,3 7610,228,9 898,433,8 3052,1116 2549,49,5 3237,112,2 3833,914,4 443016,7 1685126,419,4 6420,524,3 7617,828,9 8915,233,8 10213,538,8 3054,8116 Lic
23、ensed Copy: London South Bank University, London South Bank University, Fri Dec 08 09:58:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-4:1992 BSI 11-19997 Table 3 Hole diameterRod diameterFree length Required force to deflect 1 mm Maximum operating deflection DHDdLo H15 mm h15 mmmm 10 % Nmm
24、25989,4 3272,612 385614 4447,516,5 5141,719 6432,324 20107625,128 892233 10219,838 11518,143 12716,648 13915,152 15213,257 3056,1114 251479,4 3211812 389314 4480,816,5 5168,619 645324 7643,228 2512,58938,233 1023338 1152843 12725,948 13923,252 15220,857 17817,867 20315,876 30510,2114 Licensed Copy:
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