Analysis of the Influence of Time-Varying Rotational Speed on Aluminum Alloy Milling
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摘要: 铝合金零件通常采用铣削加工,铣削参数对产品质量存在重要影响,为分析刀具时变性对铝合金铣削加工的影响,建立了刀具转速时变性模型,并采用MATLAB编程构建了时变刀具转速,然后将所构建的时变转速引入三维铝合金铣削有限元模型中,得到了考虑刀具时变性的铝合金铣削三维模型,分析了刀具转速时变性对铝合金铣削的影响。结果发现:刀具转速时变性会导致刀具所受阻力矩和工件产生的最大铣削应力产生较大的动态变化,因此在实际加工过程中应当尽量保证刀具转速的稳定性。Abstract: Aluminum alloy parts are usually processed by milling, and the milling parameters have an important impact on the product quality. In this paper, a time-varying model of milling cutter speed is proposed to analyze the influence of time-varying of milling cutter on aluminum alloy milling. Firstly, the time-varying model of milling cutter speed is constructed by MATLAB programming. Then the time-varying speed is introduced into the 3D aluminum alloy milling model established by finite element method. Finally, a three-dimensional model of aluminum alloy milling considering the time-varying of milling cutter speed is established, and the influence of the milling cutter's time-varying on aluminum alloy milling is analyzed. It is found that the time-varying of milling cutter speed will lead to a large dynamic change of the cutter's reaction torque and the maximum milling stress produced by the workpiece. Thus the stability of cutter speed should be ensured in the actual processing.
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Keywords:
- aluminium alloy /
- milling /
- time-varying of speed /
- FEM
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