主轴-刀柄-刀具系统刀尖频响函数的预测方法研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (13) : 83-88.

论文

王二化1 吴波2 胡友民2 王军2 杨叔子2

作者信息 +

Tool point FRF prediction researches of spindle-holder-tool system

WANG Erhua 1 WU Bo2 HU Youmin2 WANGJun 2 YANG Shuzi 2

Author information +

文章历史 +

摘要

为了获取稳定性Lobe图必需的刀尖频响函数，以考虑转动惯量和剪切变形的Timoshenko梁理论建立主轴、刀柄和刀具模型，并结合传递矩阵法和动柔度耦合子结构分析技术（RCSA），提出了一种新的刀尖频响函数预测方法。和模态叠加法计算结果相比较，可以发现，该方法具有更高的计算精度和效率。这种预测方法有助于快速获取精确的刀尖频响函数，从而能高效地绘制出高精度的稳定性Lobe图，为保证高速切削过程的稳定性打下坚实基础。

Abstract

Tool point frequency response function (FRF) is a prim need for constructing the stability lobe diagrams. Based on Timoshenko beam theory considering rotary inertia and shear deformation, all components of the spindle-holder-tool assembly are modeled as multi-segment Timoshenko beams. This study proposed an analytical method for obtaining the tool point FRF of a given combination by using transfer matrix and receptance coupling approaches. Compared with the calculation results of mode superposition method, the algorithm proposed is verified. The new prediction method can help to obtain the tool point FRFs of machine tools more precisely and quickly, so more accurate stability lobe diagrams can be achieved, and it can lay a foundation for ensuring the stability of high speed cutting processes.

导出引用

王二化1 吴波2 胡友民2 王军2 杨叔子2 . 主轴-刀柄-刀具系统刀尖频响函数的预测方法研究[J]. 振动与冲击, 2015, 34(13): 83-88

WANG Erhua 1 WU Bo2 HU Youmin2 WANGJun 2 YANG Shuzi 2 . Tool point FRF prediction researches of spindle-holder-tool system[J]. Journal of Vibration and Shock, 2015, 34(13): 83-88

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