Simulation and Experimental Study of Machining Parameters on Chip Breaking in Oxygen-free Copper Cutting
An oxygen-free copper cutting model is established based on Deform 3D to analyze the effects of cutting force,cutting temperature and stress-strain on chip breaking in oxygen-free copper cutting under different cutting parame-ters,and experiments are conducted on the process of oxygen-free copper cutting.The results show that under the same feed rate and cutting depth,the cutting speed increases from 100m/min to 600m/min,the cutting force and shear stress decrease gradually,the cutting temperature increases,and the equivalent strain increases first and then decreases.The local stress concentration caused by the collision between the chip and the workpiece interacts with the stress concentration at the tool-chip contact to make the chip fracture.Feed rate and cutting depth will affect the chip breaking zone of cutting speed.When the feed rate is 0.1mm/r and the cutting depth is 0.05mm,the chip breaking zone of cutting speed is 100～400m/min.When the feed rate is 0.1mm/r and the cutting depth is 0.1mm,the chip breaking zone of cutting speed is 200～400m/min.When the feed rate is 0.15mm/r and the cutting depth is 0.05mm and 0.1mm respectively,the cutting speed process-ing domain is 200～500m/min.
万方数据
维普
