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本刊曾几次刊载了关於选择表面光洁度的资料,但译者觉得都不够完整和实用。例如,1954年第9期B.Г.任里切夫著的“保证达到苏联精度与光度标准(ГOCT2789-51)的加工方法”和1954年第15期A.Φ.著的“精度等级和光洁度等级”两项资料中,仅述及了表面光洁度与精度等级和配合公差之间的关系,但未述及表面光洁度与名义尺寸等的关系。又如1954年第4期A.B.柯较纳著的“表面光洁度、精度和配合之间的相互关系”和1955年第10期“关于光洁度的确定”两项资料中,虽介绍了表面光洁度与名义尺寸,精度等级和配合公差之间的关系;但根据我们一般在苏联机床图纸中所见到的,和目前我们自行测绘的图纸中所应用的情况看来,这两项资料中所介绍的表面光洁度等级似乎稍高了一些。例如,直径为18~180公厘的二级精度的孔(公差为A),其表面光洁度一般为 6或 7,然而按上述两项资料,则不得低於 8;在轴的方面也有类似的情况。这在机床工业中一般是比较少见的。这也许在苏联共些工厂中是适用的,但按我国工厂目前的条件来看,一般尚不能达到这样高的表面光洁度。此外,表面光洁度等级的确实是和零件表面的具体用途有关系的。这在上述四篇文章中都说?
The journal has published several times on the choice of surface finish information, but the translator does not think it is complete enough and practical. For example, No. 9, 1954 B. Г. Ritschev’s “Processing Method for Assuring the Standards of Soviet Union Precision and Photometry (ГOCT2789-51)” and No. 15 of 1954 Φ. The “accuracy grade and finish grade,” the two materials, only referred to the surface finish and accuracy grade and the relationship between the tolerance, but did not mention the surface finish and nominal size and so on. Another example is the fourth issue of 1954 A. B. Ke is more satisfied with the “surface finish, precision and coordination between the” and 1955, No. 10 “on the determination of finish,” the two materials, although introduced the surface finish and nominal size, precision grade and with the tolerance However, according to what we generally see in Soviet machine drawings and what we are currently using in our self-mapping drawings, the level of surface finish described in these two sources seems slightly higher. For example, secondary precision holes of 18 to 180 mm in diameter with a tolerance of A typically have a surface finish of 6 or 7, however, in both cases, no less than 8; similarly, in terms of the shaft Happening. This is generally not uncommon in the machine tool industry. This may be applicable in some factories in the Soviet Union, but according to the present condition of our factory, such a high surface finish can not generally be achieved. In addition, the surface finish level is indeed related to the specific use of the surface of the part. This is said in the above four articles?