| dc.description.abstract | Aluminum alloys are widely used in aerospace, military, construction, machinery, people′s livelihood, 3C, appliances, electricity, printing, medical, semiconductor industries, etc. Among them, the aerospace industry has the characteristics of nose, fuselage, wing and so on in the process of aerospace, Lightweight, high-strength and fatigue-resistant materials are required. Hence, How to make aluminum alloy high speed milling is important question in manufacturing. This paper has investigate the characteristics of the surface in high speed milling Al7475-T7351 aluminum alloy by using a five-axis machine tool. The surface roughness the machined surface for different milling conditions are studied, milling conditions for obtaining the best surface roughness. Firstly, based on high speed machining theory is considered to select fixed milling conditions with spindle speed , feed rate, depth of cut and use of cutting fluid. The variable milling conditions with 6 types of spindle speed (12000~14000)rpm, 6 types of feed rate (6000~8000)mm/min, 3 types of depth of cut (1~3)mm, 108 combination of tests are performed, Measured surface roughness of the workpiece. Model the experimental data, genetic algorithm is applied to find the better control parameters of the Milling, a subsequent processing time and cost can be reduced and productivity will be improved. | en_US |