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引言表面粗糙度新国标GB 1031—83、GB3505—83、GB131—83废除了V1～V14分级而代之以用表面粗糙度评定参数R_a、R_z、R_y 的具体数值来表征加工零件的表面粗糙度,其中首推参数是R_a、因为R_a 的优选价值不仅在于它的计算依据是截面轮廓上基本长度内的所有点,信息量大,而且在其电路设计上也较易实现。工程现场对加工件表面粗糙度R_a 值的检测,往往要求零件在不脱离机器的状况下,短时间内得出定量的结果是否符合要求。继而决定下道工步、工序如何进行。这对于诸如电力、航空、船舶、汽车、冶炼等重型机械零件的表面质量控制尤为重要。而计量室里的大型台式轮廓仪对此常束手无策。
Introduction Surface roughness New GB GB 1031-83, GB3505-83, GB131-83 abolished the V1 ~ V14 grading and replaced by the surface roughness of the evaluation parameters R_a, R_z, R_y specific values to characterize the surface roughness of the machined parts , The most important parameter is R_a, because the preferred value of R_a is not only that it is calculated based on all the points within the basic length of the cross-sectional profile but also has a large amount of information and is also easy to implement in circuit design. The detection of the R_a value of the surface roughness of the workpiece on the construction site often requires that the part should meet the requirements in a short period of time without any deviation from the machine. Then determine the next step, how the process. This is particularly important for surface quality control of heavy machinery parts such as power, aviation, marine, automotive, and smelting. The large benchtop profiler in the metrology room is often overwhelmed.