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叠层构件制孔容易生成层间毛刺,严重影响加工质量和效率。为了探究层间毛刺生成过程,预测毛刺高度,提出有效控制层间毛刺的工艺方法,该文首先通过实验建立钻削轴向力经验公式,然后采用有限元方法计算单层板在理论钻削力下的变形量,进而预测层间毛刺生成初始位置,最后运用能量法建立叠层钻削层间毛刺高度理论模型。应用硬质合金麻花钻在铝合金叠层试件上开展钻削实验,结果表明:理论模型能够有效地预测层间毛刺高度,揭示进给量和层间间隙对层间毛刺的影响规律,有助于优化叠层钻削工艺参数。
Lamination member hole is easy to generate interlayer burrs, seriously affecting the processing quality and efficiency. In order to explore the glitch formation process and predict the glitch height, a new method to control the glitch in the interlayer is put forward. The empirical formula of drilling axial force is firstly established and then the finite element method And then predict the initial position of intergranular burrs. Finally, the theoretical model of interbedded burr height is established by energy method. The results show that the theoretical model can predict the height of burr layer effectively and reveal the effect of feed rate and interlayer gap on burr layer. Help to optimize laminated drilling process parameters.