The stick-slip behavior of steel and the effect of surface texture

Purpose This paper aims to experimentally investigate the effect of surface texture on the stick-slip behavior of the guideway of machine tools, and to find significant pattern and optimal parameters to suppress the stick-slip. Design/methodology/approach A method using the root mean square (RMS) of force acceleration are introduced to evaluate the stick-slip with groove and dimple patterns, as well as different surface roughness and contact modes. Findings Smooth surfaces are more prone to stick-slip phenomena. Circular dimples show better anti-stick-slip performance compared to groove textures, while the area density of dimple textures is the key parameter. Practical implications Under low-speed conditions, the guideway of machine tools may exhibit a stick-slip phenomenon, which compromises the stability of micro-feeding, positioning and processing accuracy and may even reduce the service life of cutting tools and guideways. Originality/value RMS of force acceleration is suggested for quantitative assessment of stick-slip. The design frame of dimple pattern to suppress stick-slip is proposed.