Effect of Cutting Parameters on Tool Vibration During TC4 Cutting Process
Through the single-factor method,cutting tests are carried out on test workpieces (made of TC4 titanium alloy rod material) .The characteristics of tool vibration are studied by measuring the vibration acceleration of the tool and observing the morphology of the chips .The study shows that when the cutting speed is low,strain hardening of the material on the machined workpiece surface predominates,leading to greater fluctuations in the vibration acceleration of the tool .As the cutting speed increases,thermal softening of the machined surface material gradually becomes dominant,and the effect of cutting force fluctuations caused by the slip of serrated chip units becomes more gradual,which reduces the fluctuations in the vibration acceleration of the tool .When other cutting parameters remain constant and only the feed rate or back engagement of the cutting edge amount is increased,the contact area between the tool and the workpiece increases,as does the deformation resistance of the material on the machined surface .When serrated chips are formed,the cutting force drops momentarily,and the tool vibrates more due to instability caused by the force .
万方数据
维普
