A parametric study on extrusion geometry and blade quantity during axial cutting deformation of circular AA6061-T6 extrusions under impact and quasi-static loading

A parametric study on the axial cutting deformation of circular AA6061-T6 extrusions was completed under both dynamic and quasi-static loading conditions. Parameters which would influence the response of the cutting deformation mode, including tube diameter, tube wall thickness, number of cutter blades, and loading conditions, were investigated in the experimental tests. For the impact tests completed within this research the peak cutting load and the mean cutting force ranged from 14.45 kN to 31.31 kN and from 8.28 kN to 20.56 kN, respectively. The quasi-static peak cutting load and the mean cutting force ranged from 9.07 kN to 26.93 kN and from 7.06 kN to 24.92 kN, respectively. Generally, the axial cutting force increased with the increase of the number of cutter blades, the extrusion diameter, and the extrusion wall thickness. Comparison of the experimental results to the theoretical predictions using an analytical model developed by the authors showed that the predicted steady-state axial cutting forces agreed well with the experimental results.