Study on the influence of elliptical vibration assisted cutting vibration parameters on machining SiCp/Al cutting force
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摘要: 为了研究椭圆振动辅助切削SiCp/Al复合材料的材料去除机理以及不同振动参数对切削力产生的影响，运用有限元分析软件ABAQUS建立二维平面的SiCp/Al复合材料切削模型，对比前人不同切削深度下测得切削力的实验数据验证模型正确性，进行椭圆振动辅助切削仿真研究。仿真结果表明，相位差为π/2时平均主切削力和吃刀抗力最小；随着振动频率的增大，平均主切削力和吃刀抗力都有着减小的趋势；X方向振幅对主切削力和吃刀抗力有着显著影响，X方向振幅增大，切削力减小；Y方向振幅增大，主切削力减小但吃刀抗力略有增大。Abstract: In order to study the material removal mechanism of elliptical vibration-assisted cutting SiCp/Al composite materials and the influence of different vibration parameters on cutting forces, the finite element analysis software ABAQUS was used to establish a two-dimensional plane SiCp/Al composite cutting model, and the experimental data measured at different cutting depths of the predecessors were compared to verify the correctness of the model, and the simulation of elliptical vibration assisted cutting was carried out. Simulation results show that the average main cutting force and eating resistance are the smallest when the phase difference is π/2. With the increase of vibration frequency, the average main cutting force and knife resistance have a tendency to decrease. The amplitude of the X direction has a significant impact on the main cutting force and the eating force, and the amplitude in the X direction increases and the cutting force decreases. The amplitude in the Y direction increases, the main cutting force decreases but the eating resistance increases slightly.
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Key words:
- SiCp/Al /
- elliptical vibration assisted cutting /
- finite element /
- cutting force
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表 3 材料参数
参数 Al SiC 密度/(t/mm3) 2 820×10−12 3 200×10−12 弹性模量/MPa 70 600 408 000 泊松比 0.35 0.35 摩擦角/(°) / 13 膨胀角/(°) / −5 K / 0.92 
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表 4 仿真切削参数
参数 值 切削速度/(mm/s) 1.5 切削深度/μm 10,15,20,25 频率/Hz 100,150,200 X方向振幅/μm 2,3,4 Y方向振幅/μm 4,5,6 相位差 π/4,π/2,3π/4 刀具前角/(°) 7 刀具后角/(°) 5 刃口半径/μm 2
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