《DIS稿与CD稿的差异汇总》由会员分享，可在线阅读，更多相关《DIS稿与CD稿的差异汇总（5页珍藏版）》请在金锄头文库上搜索。
1、 1 / 5ISO 11891 的 DIS 稿与 CD 稿差异汇总表No 章 /节 段/句 DIS 稿 CD 稿1 一段This international standard , shapes, spring construction . for hot coiled, quenched and tempered helical compression springs that are made from hot coiled round section steel bar.This standard specifies the materials, shapes, spring charac
2、teristics, tolerances, manufacturing requirements and test methods for common helical compression springs that are made from hot coiled round section steel bar and then quenched and tempered. 21二段 These specifications only apply to springs with following limit values. The following limit values appl
3、y to springs made to this standard.3 4.1 一段Unless otherwise agreed by the purchaser and supplier, springs should be made from the material conforming to ISO 683-14.Springs shall be made from the material specified in ISO 683-14. It is permitted to use alloys different to those defined in ISO 683-14;
4、 in this case, agreement between the purchaser and the supplier shall be made in advance.4 4.2.1 一段The tolerances of the dimensions of hot rolled bars shall meet the requirement of ISO 1035-4, unless otherwise Tolerances of the dimensions and shapes of hot rolled bars specified shall be defined in a
5、ccordance with ISO 1035-4, others 5 一段The tolerances of the dimensions and shapes of cold-worked surface bars specified shall meet the requirement of Table 2, unless otherwise Tolerances of the dimensions and shapes of cold-worked surface bars specified shall be defined in accordance with Table 2, o
6、thers 64.2.2Table 2 X d X X to X7一段一句 should shall 8 二句If several springs are to be nested together, the direction of helix alternates by spring, with the outside spring usually being right-handed.If several springs are nested together, the direction of helix changes by turns, with the outside sprin
7、g usually being right-handed. 95.1三句 should shall 10 一段 , this type should apply to both ends of the spring. , this type shall apply to both ends on the spring.115.2Fig.112 一段The length at a specified load or the load at a specified length shall be agreed between purchaser and supplier according to
8、6.1 or 6.2. The spring characteristics in this specification only applyN/A136二段The spring characteristics in this specification only apply to springs with linear characteristic. The characteristics for springs with nonlinear characteristic shall be agreed between purchaser and supplier.N/A14一段一句 sho
9、uld shall 156.1二句 should shall 2 / 516 三句The deflection under specified load shall be within the range of 20 % to 80 % of the nominal total deflection.However the specified lengths at load shall correspond to deflections between 20 % and 80 % of total deflection.17一段一句 should shall 18 二句 should shal
10、l 196.2三句The deflection under specified length shall be within the range of 20 % to 80 % of the nominal total deflection.However the specified load at length shall be between 20 % and 80 % of total deflection. However the specified load at length shall correspond to deflections between 20 % and 80 %
11、 of total deflection.20 6.3 一段 should shall 21一段一句 should shall 22 二句 should shall 237三句 should ISO 80000-1. shall ISO 31-0.24 7.1一段二句 should shall 25一段一句 should shall 26 二句 should shall 277.2Table 4 Grade 1: min 2,0; Grade 2: min 2,5; Grade 1: min 1,5; Grade 2: min 2,0;28 7.3一段二句 should shall 29一段一
12、句The perpendicularity shall be measured for two ends, or perpendicularity and parallelism for one end. 30 二句When the spring is standing on any end for measurement, the measured result shall meet the requirement of this specification.There are two methods of two ends perpendicularity or one end perpe
13、ndicularity plus parallelism can be chosen for controlling the tolerance of spring shape.31二段一句Normally The perpendicularity are not specified for spring with end types a and d wont be specified. Normally the perpendicularity of the outer spring and end plane for spring end types a, d wont be specif
14、ied.327.4二句For spring with end types b, c, e and f, the perpendicularity shall be less than the limit specified in Table 5.The tolerances for perpendicularity of the outer spring and end plane for spring end types b, c, e, and f shall be defined in accordance with Table 5.33 7.5一段一句If perpendiculari
15、ty for two ends is specified, the parallelism shall not be required. For the heavy weight spring, one end perpendicularity plus parallelism can be specified. 3 / 534 二句 For heavy weight spring, one end perpendicularity plus parallelism may be specified. If the perpendicularity of both ends is specif
16、ied, the parallelism wont be specified.35 三句 of the two ends is not required for spring with end types a, d. Normally the parallelism of both the end coils face for spring end types a, d wont be specified.36 四句For spring with end types b, c, e and f, the parallelism shall not be more than the limit specified in Table 6.The tolerances for parallelism of both the end coils f
