由于表面粗糙度是反映加工参数变化的一个重要指标,因此在联线控制方面起着重要的作用。目前,大多数表面粗糙度测量仪器都必须与被检测零件保持接触,也就是说,仪器的测头必须沿着零件表面滑移,同时记录 As the surface roughness is a reflection of the processing parameters of an important indicator of change, so in line control plays an important role. Currently, most surface roughness measuring instruments must be in contact with the part under test, that is, the probe of the instrument must slide along the part surface while recording