一、前言数十年来一直认为评定加工表面的粗糙度参数十分重要。经常使用的仪器仍是用一个金钢石触针机械地扫描表面。通过触针针尖的垂直位移产生一个与表面轮廊相对应的电信号,并且可以进一步按标准化了的表面特征值(如DIN 或 ISO)的定义进行处理。这种针描表面的方法有许多缺点:测定的轮廊只是表面的一 I. Preface It has been considered for decades that it is important to evaluate the roughness parameters of the machined surface. Frequently used instruments still use a diamond stylus to mechanically scan the surface. The vertical displacement of the tip of the stylus produces an electrical signal corresponding to the surface vestibule and can be further processed according to the definition of a standardized surface feature such as DIN or ISO. There are many disadvantages to this needle-drawn method: the measured vestibule is just one of the surfaces