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量块是用两个相互平行的测量面之间的距离来决定其工作长度的一种高精度测量工具,广泛应用于长度量值的传递。随着现代工艺的发展、机械产品精度要求不断提高,对量具精度和可靠性的要求也越来越高。特别是量块,作为各种量具的基准,要求就更高。其中主要精度要求有长度极限偏差、长度允许变动量、量面平面度和尺寸稳定性等。这些精度不仅与研磨加工质量有关,而且与热处理的质量关系更大,不管加工精度多高,如果热处理的尺寸稳定性不好,以上各项精度都将受到影响。国际标准规定0级和
A measuring block is a high-precision measuring tool that determines the working length of two measuring surfaces in parallel with each other. It is widely used in the transmission of length values. With the development of modern technology, the precision requirements of mechanical products continue to increase, and the requirements for accuracy and reliability of measuring instruments are also getting higher and higher. In particular, measuring block, as a gauge of various measuring tools, the requirement is higher. The main precision requirements include length limit deviation, length allowable variation, surface flatness and dimensional stability. These accuracies are not only related to the quality of the grinding process, but also to the quality of the heat treatment. Regardless of the accuracy of the processing, the above accuracy will be affected if the dimensional stability of the heat treatment is not good. International standards 0 and