表面纹理的空间参数表征及在磨粒可控排布砂轮表面的应用

Characterization of Surface Texture with Spatial Parameters and Its Application on Grinding Wheel Surface with Controllable Grains Arrangement

磨粒的可控优化排布能够有效改善砂轮的磨削性能。为了表征磨粒可控排布的效果，评定排布工艺的质量，采用最新的表面三维形貌评定标准ISO25178—2空间参数（最速衰减自相关长度Sal，表面纹理结构比率Str,表面纹理方向Std）对其表面进行分析。首先研究了空间参数的表征意义及其求解方法，然后用Matlab软件模拟具有不同磨粒排布类型的砂轮表面，分析了各空间参数在磨粒可控排布砂轮表面的应用。结果表明空间参数可以应用于磨粒可控排布效果的表征和评定，从而为磨粒可控排布砂轮的检测和评定提供了一种新方法。

The optimized controllable arrangement of grains on a grinding wheel can improve its processing properties effectively. In order to characterize the arrangement effect and so as to evaluate the arrangement quality, spatial parameters （Sal-fastest decay autocorrelation length, Str-texture aspect ratio, Sta-surface texture direction ） in the latest 3D surface texture standard ISO25178-2 are adopted to analyze the grinding wheel surface. First, the meaning and calculation method of the spatial parameters are studied. Then grinding wheel surfaces with different grain arrangement types are simulated by Matlab and then the application of each spatial parameter on grinding wheels with particular grain arrangement is analyzed. The application is proved to be reasonable as a result, which provides a new method for the test and evaluation of grinding wheels with controllable grains arrangement.