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苏联OCT制公差与配合,在我国机械制造业中已普遍地采用,这对我国机械制造工业的发展起了很大的促进作用。最近在苏联的“国家标准通报索引”1958年第6期中,刊载了OCT制公差与配合的变动情况,现在简单介绍一下,供大家参考:基孔制,1级精度(OCT HKM 1011)增加动配合X_1,见表1及图1。基孔制,2级精度(OCT HkM 1012)增加热动配合TX,见表2及图2。基孔制,2a级精度(OCT HKM 1016)增加第1种压配合IIP1_(2a),第2种压配合IIP2_(2a)及动配合X_(2a);另外,对
The tolerance and cooperation of the Soviet Union’s OCT system has been widely adopted in China’s machinery manufacturing industry, which has greatly promoted the development of China’s machinery manufacturing industry. In the recent period of the sixth issue of the “National Standards Bulletin Index” of 1958 in the Soviet Union, the tolerances and fits of the OCT system have been published. Now we will briefly introduce it for your reference: Base Hole System, Level 1 Accuracy (OCT HKM 1011) Additions With X_1, see Table 1 and Figure 1. Base hole system, 2 level accuracy (OCT HkM 1012) increased thermal dynamics with TX, see Table 2 and Figure 2. Base hole system, Class 2a accuracy (OCT HKM 1016) Add 1st press fit IIP1_(2a), 2nd press fit IIP2_(2a) and move fit X_(2a);