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Numerical Simulation and Experimental Study on the Drilling Process of 7075-t6 Aerospace Aluminum Alloy

机译：7075-T6航空铝合金钻井过程的数值模拟与实验研究

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摘要

A finite element model for setting drilling conditions is established. The effect of feed speed and spindle speed on the drilling process was studied. In the test phase, drilling tests were conducted using three different feed speeds (60, 100, and 140 mm/min) and three different spindle speeds (800, 1000, and 1200 rpm). The correctness of the finite element model was verified by comparing the experimental and numerical simulation data. The results show that the axial force and torque increase significantly with the increase of feed speed, while the axial force and torque increase less as the spindle speed increases. The numerical simulation results show that the temperature of the cutting edge increases as the feed speed increases. Increasing the rotating speed increases the formation of chip curl. When the working conditions are high rotating speed and low feed, the tool wear is reduced, and the machining quality is better. The numerical simulation results obtained for the chip forming effect are similar to the experimental data. In addition, the simulation results show the generation of burrs. A comparison of the finite element simulation and experimental data leads to an in-depth understanding of the drilling process and ability to optimize subsequent drilling parameters, which provide reliable process parameters and technical guarantees for the successful implementation of drilling technology for space suspended ball structures.
机译：建立了设定钻井条件的有限元模型。研究了进料速度和主轴速度对钻井过程的影响。在测试阶段，使用三种不同的进料速度（60,100和140mm / min）和三种不同的主轴速度（800,000和1200rpm）进行钻探测试。通过比较实验和数值模拟数据来验证有限元模型的正确性。结果表明，随着进给速度的增加，轴向力和扭矩显着增加，而轴向力和扭矩随着主轴速度的增加而增加。数值模拟结果表明，随着进给速度的增加，切削刃的温度会增加。增加旋转速度增加了芯片卷曲的形成。当工作条件高旋转速度和低进料时，刀具磨损减小，加工质量更好。为芯片形成效果获得的数值模拟结果类似于实验数据。此外，仿真结果表明了毛刺的产生。有限元模拟和实验数据的比较导致对钻井过程的深入理解和优化随后的钻井参数的能力，为空间悬挂球结构的钻井技术成功实施提供可靠的工艺参数和技术保障。

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