Study of Surface Roughness in Milling Carbon Fiber Reinforced Plastics Using PCD Tool

The surface roughness of carbon fiber reinforced plastics (CFRP) has been studied at different cutting parameters by using PCD tools. The effect of cutting parameters such as cutting velocity, cutting depth, cutting width as well as feed rate on roughness are analyzed. A predictive model for surface roughness in milling was established by regression analysis method. Based on the experimental results, the regression coefficient was calculated and the significance check of the regression equation was carried out. Results show that cutting depth has a significant effect on surface roughness and the next one is cutting velocity, then it is cutting width, feed rate has a little effect under the current experimental conditions. The regression is significant for the prediction model. The parameters used in milling can be selected to improve the quality of the surface based on the model of the paper.