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Study of machineability of high strength aluminum alloy in end-milling processes

In this work, the method of machining the workpieces of machine-building and aerospace industry in order to lighten them is analyzed. Workpiece lightening can be achieved by end milling of pockets, slots, and ledges. Measures on increasing the reliability of CNC machine tools and their technological equipment are studied. The milling conditions by monolithic carbide end cutters of hull parts made of aluminium alloys are considered. The additions to the methodology of calculating the force parameters, power, and torque at the end milling are introduced. The technique is intended to select mode parameters providing increasing productivity of processing of ledges and slots with consideration of restrictions on roughness parameters of the machined surface. The values of coefficients characterizing machinability of aluminum alloy V95T1 are obtained, which allows us to increase the accuracy of calculation of cutting forces, torques, and power spent on cutting when setting cutting modes and selecting parameters of technological equipment. The conclusions on the possibility of automatization of the calculation of milling parameters are made.