Analysis of Cutting Stability in Vibration Assisted Machining Using Ananalytical Predictive Force Model
Analysis of Cutting Stability in Vibration Assisted Machining Using Ananalytical Predictive Force Model
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DOI：
10.1016/j.procir.2015.03.014
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Yuan Gao;Ronglei Sun;J. Leopold
中科院分区：
文献类型：
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作者：
Yuan Gao;Ronglei Sun;J. Leopold
振动辅助加工（VAM）是在传统加工（CM）的基础上增加正弦振动的一种加工方法。VAM能有效地提高加工质量和加工效率，这一点已被公认，但其理论依据还不充分。一个可行的解释是关于切削稳定性的改善。在以往的文献中，对CM和VAM的颤振时域仿真进行了比较，表明VAM可以在各种条件下抑制颤振并提高切削稳定性。然而，稳定性波瓣图，给出了一个全局的稳定性行为的图片仍然是不可用的VAM。本文绘制了VAM的稳定波瓣图，并与CM的稳定波瓣图进行了比较。建立了一个预测切削力的解析模型，该模型综合考虑了材料特性、刀具几何形状、切削条件和振动参数等因素，用于确定VAM中的动态切削力。在此基础上进行了稳定性分析，得到了相应的稳定性波瓣图，说明了在大转速范围内，变风量对切削稳定性的影响。最后，进行了表面粗糙度切削实验，验证了理论结论.
Vibration assisted machining (VAM)adds sinusoidal tool vibration to the conventional machining (CM) process. It is generally recognized that VAM can effectively improve machining quality and machining efficiency, however, the theoreticalbasis for this isnot fully developed. One feasible explanation is about the improvement of cutting stability. In the previous literatures, time-domain simulationsof chatter forCM and VAM have been compared, showing VAM can suppress chatter and increase cutting stability under various conditions. However, the stability lobe diagram that givesa global picture of the stability behavior is still unavailable for VAM. This paper is dedicated to draw the stability lobe diagram for VAM and compare it with that for CM. An analytical predictive force model is developed to determine the dynamic cutting forcein VAM, incorporating material properties, tool geometry, cutting conditions and vibration parameters. Then a stability analysis based on the proposed force model is done and the corresponding stability lobe diagram is obtained, which shows the effect of VAM on cutting stability on a large spindle speed scale. Finally, cutting experiments about surface roughnessare carried out to verify the theoretical conclusion.