Prediction Of The Interaction Between Cutting Force And End Of The Spindle System Of The Five-axis Side Milling Process

Study the interaction of the machine and process can help to improve the machining accuracy and efficiency.To simulate the five-axis side milling process,an algorthm study the interaction between the cutting force and the end of the spindle system was proposed in this essay.This algorithm contribute to improving the milling accuracy.The specific contents of the essay are as follows:1)The transient cutting force coefficients identification algorithm including the cutter vibration was proposed in this essay.To established the codfficients identification algorithm considering cutter vibration,the undeformed chip thickness models were established based on the dichotomy and the pixel scan algorithm.The relationship of the process parameter and the cutting force coefficients ws studied based on this method in this essay.2)The cutting force model of the five-axis side milling based on the tangent plane approximation method was proposed in this essay.The crucial cutting geometry parameters such as the undeformed chip thickness,the cut-in angle and the cut-out angle were simulated based on the geometry parameters of the cutter,the process parameters,the cutting force model of the cutting edge elements,the five-axis milling path model and the tangent plane approximation method.Then the five-axis side milling cutting force could be predicted based on the crucial cutting geometry parameters and the transient cutting force coefficients algorithm including the cutter vibration.3)The dynamics model of the end of spindle system used in the small size parts milling was established based on the RCSA.Because the dynamics characteristic parameters of the tool tip of the small diameter cutter can hardly be measured,the dynamics parameters of the interface were identification based on the Cuckoo algorithm and the RCSA.Then the FRF of the end of the spindle system could be predicted based on the dynamics parameters of the interface and the measured FRF of the end of the tool shank.4)The algorithm of the interaction of the cutting force and the end of spindle system was proposed in this essay.To establish the cutting force model including the cutter vibration and predict the machining errors caused by cutting force,the interaction of the cutting force and the end of the spindle system was studied.The plane milling simulation platform was established based on the rigidly connected finite elements model of the cutter-holder-spindle system,the average cutting force identification algorithm,the information interaction interface and the interaction algorithm.And accuracy of the interaction algorithm was verified by cutting experiments.Considering the characteristics of the sculpture surface milling,the five-axis side milling simulation platform was established based on the transient cutting force coefficients identification method and the dynamics model of the end of spindle system.Then five-axis cutting fore including the cutter vibraiton and machining errors caused by cutting force was predicted based on simulation platform.5)Based on the mathematical model of the face gear,the five-axis side milling path was generated.And the post-process system was established based on the parameters of the machining center.And the NC code of the five-axis milling was generated based on the post-process system.Based on the interaction simulation platform of the five-axis cutting force and the end of spindle system,the cutting force and the machining errors caused by the cutting force were predicted.And the accuracy of the simulation was verified by the experiments.