多齿铣刀侧铣加工多层CFRP铣削力的建模与仿真

韩胜超, 陈燕, 徐九华, 傅玉灿, 周井文

韩胜超, 陈燕, 徐九华, 等. 多齿铣刀侧铣加工多层CFRP铣削力的建模与仿真[J]. 复合材料学报, 2014, 31(5): 1375-1381.
引用本文: 韩胜超, 陈燕, 徐九华, 等. 多齿铣刀侧铣加工多层CFRP铣削力的建模与仿真[J]. 复合材料学报, 2014, 31(5): 1375-1381.
HAN Shengchao, CHEN Yan, XU Jiuhua, et al. Modeling and simulation of milling forces in side milling multi-layer CFRP with multitooth cutter[J]. Acta Materiae Compositae Sinica, 2014, 31(5): 1375-1381.
Citation: HAN Shengchao, CHEN Yan, XU Jiuhua, et al. Modeling and simulation of milling forces in side milling multi-layer CFRP with multitooth cutter[J]. Acta Materiae Compositae Sinica, 2014, 31(5): 1375-1381.

多齿铣刀侧铣加工多层CFRP铣削力的建模与仿真

基金项目: 国家自然科学基金(51075210);"高档数控机床与基础制造装备"国家科技重大专项课题(2012ZX040003031);南京航空航天大学研究生创新基地(实验室)开放基金(KFJJ20110222)
详细信息
    通讯作者:

    陈燕,博士,副教授,研究方向为难加工材料的高效精密加工技术。E-mail:ninaych@nuaa.edu.cn

  • 中图分类号: TB332;TG156

Modeling and simulation of milling forces in side milling multi-layer CFRP with multitooth cutter

  • 摘要: 由于碳纤维增强树脂基复合材料(CFRP)的层间结合强度较低,进行切削加工时在切削力的作用下容易出现分层和毛刺等质量缺陷。因此,通过对切削力的预测与控制可以有效提高加工质量。采用瞬时刚性力模型对多齿铣刀侧铣多层CFRP材料的加工过程进行铣削力建模与仿真,分析了多齿铣刀特有的几何结构对切削力的影响。试验中保持切削速度恒定,以不同进给速度分别对45°、0°、-45°和90°这4种典型纤维方向的单向CFRP进行侧铣加工,通过测得的切削力数据计算各自的铣削力系数。根据力学矢量叠加原理得到了多向CFRP铣削力系数的简化计算表达式,最后将计算结果代入铣削力模型得到了各时刻的铣削力仿真值。在同样的试验条件下对该多向CFRP进行侧铣加工验证试验,试验结果表明: 该模型能较好地预测铣削力,最大相对误差小于9%,平均相对误差小于5%,可为铣削参数优化和刀具结构优化提供理论基础。
    Abstract: The milling machining process of carbon fiber reinforced plastic (CFRP) could generate undesirable defects such as delamination and burr under the cutting forces, due to low bonding strength between the layers.Therefore, the prediction and control of cutting forces can substantially improve the machining quality.The milling forces in side milling multi-layer CFRP with multitooth cutter were modeled and simulated by using an instantaneous rigid force model.And the influence of special tool geometry of multitooth cutter on milling forces was analyzed.Milling tests of unidirectional CFRP in typical directions (45°, 0°, -45°, 90°) were carried out at the same cutting speed but with different feed speeds.Thus milling force coefficients of each unidirectional CFRP were also calculated by the test data of cutting force.Based on vector superposition principle, the simplified expression for milling force coefficients of multi-directional CFRP was obtained.Finally, the caculated results were substituted into milling forces model and the simulated value of milling force at each moment were obtained.Furthermore, verification test of milling multi-directional CFRP was carried out under the same machining condition.The results show that the model can well predict the milling force that the maximum relative error is less than 9% and average relative error is less than 5%.Thus, the model can provide a theoretical basis for cutting parameter optimization and tool geometry optimization.
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出版历程
  • 收稿日期:  2013-09-02
  • 修回日期:  2013-12-21
  • 刊出日期:  2014-10-14

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