Effects of Machining Configurations and Process Parameters on the Machining Damage Generated During Milling CFRP Structures

After demolding, in order to get the final form for assembly or other functions, the secondary manufacturing processes are needed to remove the excess materials in the edge of CFRP parts. The machining process of CFRP composites is accompanied by the occurrence of defects induced. Hence, mastering the factors affecting induced defects is crucial. The aims of this study are to conduct the evolution of machining quality, characterized by the ten-point max, R_z when changing the process parameters. Three levels of feed speed and two levels of spindle speed are combined to generate a full experimental design. Both up and down milling is conducted to examine the effects of machining configuration on machining quality. It is found that spindle speed, feed speed and machining length, and machining configuration have impacts on machining quality. However, when milling at longer distance of 3.0 m, the effects of machining configuration is not clear.