机床床身导轨纵向直线性有不同的要求,亦有不同的测量方法和计算误差方法,即使是同一公差和误差计算说明,由于理解不同,可能出现不同的结论和数值。过去我们采用苏联ГОСТ标准,由于不了解标准的依据和起草编制说明,因此产生各种不同的解释。目前我们对很多种机床已订立标准草案,并且在不断地充实和修正,因此探讨一下各国机床标准很为必要。本文仅就苏联新旧标准中有关床身导轨纵向垂直面内 Machine bed rail longitudinal linearity has different requirements, there are different measurement methods and calculation error method, even with the same tolerance and error calculation shows that due to different understanding, may come to different conclusions and values. In the past we used the Soviet Union ГОСТ standard, due to lack of understanding of the standard basis and preparation of preparation instructions, resulting in a variety of different interpretations. At present, we have draft standards for many kinds of machine tools, and constantly enrich and amend, so it is necessary to explore the standards of machine tools in various countries. This article only on the old and new standards in the Soviet Union bed vertical rail vertical plane