李宏坤   

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Paper Publications

Title of Paper:考虑模态耦合的球头铣刀颤振稳定域建模方法

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Date of Publication:2019-06-15

Journal:振动、测试与诊断

Included Journals:EI

Volume:39

Issue:3

Page Number:525-530

ISSN No.:1004-6801

Key Words:精细积分;模态耦合;颤振;球头铣刀;稳定域叶瓣图

Abstract:球头铣刀广泛应用于曲面加工中,因此构造出针对球头铣刀的颤振稳定域叶瓣图意义重大.利用精细积分法对铣削系统二阶动力学方程进行时域数值求解,由切削刃与切触区域不同时刻的关系,确定出时域数值求解方程中所需要的刀刃瞬时切削部位,通过Floquet定理获得了高精度的颤振稳定域叶瓣图,并在三轴数控机床上进行了正确性试验验证.试验结果与预测结果相一致,表明所提供的方法能够为球头铣刀实现无颤振切削加工提供有力的技术支撑.

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