Effect of Milling Process Parameters on the Surface Roughness of CFRP

Abstract

Carbon fiber reinforced plastic composites possess excellent mechanical properties, and therefore these materials are widely used industries like the automobile, defense, aerospace sectors. However the machining of CFRP materials is difficult, but the mechanical machining of these material is prime requirement to meet dimen- sional accuracy. With showing this problem, the main objective of the present paper is to special solid carbide end mill that are used for milling carbon fiber reinforced polymer composites during trimming, slotting operation. Depth of cut and feed rate are primary cutting parameters that affect the surface roughness. An increase in the depth of cut and feed rate tends to produce a rougher surface due to the increased material removal rate. On the other hand, increasing the spindle speed can decrease surface roughness by reducing the tool’s contact time with the work piece. Tool coatings such as DLC (Diamond-Like Carbon) and ALCRN (Aluminum Chromium Nitride) can also affect surface roughness. These coatings have a lower coefficient of friction than uncoated tools, resulting in less heat generation during machining. This reduced heat generation can result in a smoother surface finish. In summary, selecting appropriate cutting parameters and tool coatings can help in achieving the desired surface roughness for a given machining operation.