7075-T6Aluminum Alloy Ultrasonic Vibration Turning Finite Element Simulation And Experimental Study

With the continuous progress of science and technology, precision and ultra-precision machining accounted for a growing proportion in industrial processes, for some special materials and machining complex shapes surface, it is difficult use traditional processing methods to achieve processing requirements, or processing inefficient, which makes ultrasonic vibration machining technology rapidly becoming a new technology in the field materials processing. Turning ultrasonic vibration technology has improved surface quality, reduce cutting heat, and cutting force. This paper studied unidirectional ultrasonic vibration assisted turning in processing7075-T6aluminum alloy, the main contents of this paper as follows:1.Summary of domestic and foreign research literature in ultrasonic vibration assisted machining, and analyzes the development of ultrasonic vibration in difficult materials and molding surface at home and abroad, with a focus on turning vibration instead of turning ordinary processing methods;2.Ultrasonic vibration assisted turning temperature finite element analysis.Using Abaqus finite element simulation software,7075-T6aluminum alloy turning finite element simulation, analysis of the role of ultrasonic vibrations and the turning temperature changes.3.Ultrasonic vibration assisted cutting force study.Freedom cutting at right angles turning7075-T6aluminum alloy, ultrasonic vibration is applied in the x direction and the y direction two different directions, for these two different modes of vibration cutting, analysis of the process effect of ordinary processing and ultrasonic vibration machining, analysis of the effect of ultrasonic vibration on the main cutting force turning process peak, and after ultrasonic vibration is applied, the changes in cutting force.4.Effect of ultrasonic vibration machining workpiece surface quality. Build tool workpiece ultrasonic vibration cutting system, research after ultrasonic vibration applied, change of the workpiece surface accuracy and surface roughness observed chips morphology.Through in-depth research, obtain the following conclusions:1.By ultrasonic vibration turning and turning ordinary experimental data analysis, prove the advantages of ultrasonic vibration in aluminum alloy7075-T6aluminum alloy turning;2.In low speed ultrasonic vibration turning, Good processing effect of process parameters is:speed500r/min, Feed0.1mm/r, cutting depth0.2mm, vibration parameters for the vibration frequency40KHz, with an amplitude of12μm;3.Use Abaqus finite element software simulate ultrasonic vibration cutting process and general cutting process, obtain temperature field, stress field and the cutting force;4.Through the comparative analysis of experimental data and simulation data, Verify that the cutting parameters and the simulation parameters affect on7075-T6aluminum alloy processing performance.