Temperature Field Simulation and Process Parameter Optimization of Fiber Laser Assisted Turning Alumina Ceramics

To explore the influence of laser-tool distance, laser power, spindle speed, and cutting depth on the surface quality of alumina ceramics, the turning test was carried out using fiber laser and CBN tool.The feasibility of the model is verified by temperature field simulation, and the range of process parameters is preliminarily determined, which provides a theoretical basis for further optimization.The response surface method was used to study the influence of the interaction of various processing factors on the test results, and the processing parameters were optimized and verified.According to the response surface analysis results, each process parameter's influencing factors on surface roughness are ranked as follows: cutting depth > laser power > spindle speed > laser-tool distance.Using the response surface methodology, the optimal machining parameters were determined with the objective of minimizing surface roughness.The optimal parameters obtained are as follows: the laser-tool distance is 0.95 mm, the laser power is 112 W, the spindle speed is 635 r / min, and the cutting depth is 0.22 mm.Conventional turning was conducted under optimal parameters to compare and analyze the surface morphology and tool wear between laser-assisted machining and conventional machining.Compared to conventional turning, the results demonstrate that laser-assisted turning significantly reduces surface roughness and cutting forces while improving surface quality and extending tool life.The minimum surface roughness reaches 0.806 m and the average value reaches 0.816 m after processing with optimized parameters.