Carbon fiber reinforced polymer (CFRP) has the characteristics of multi-scale and multi-equal structure

showing significant anisotropy and heterogeneity

poor machining performance

and easy to appear obvious burrs and delamination. In order to analyze the characteristics in helical milling of CFRP

the ball helical milling of CFRP was studied

and cutting forces

tool wear and hole-making quality were analyzed in detail. First

based on the result of the experiment

the changes of axial and radial cutting force and cutting temperature over cutting parameters were analyzed.  Then

tool wear was studied respectively from the lateral edge and spherical edge. Finally

hole diameter was analyzed from the perspective of the hole deep

entry and exit hole-making quality

and delamination factor was used to describe entry delamination state. The results show that the ball end milling cutter has better cutting characteristics in the ball helical milling of CFRP

but hole-making quality needs to be improved.