Simplified and efficient calibration of a mechanistic cutting force model for ball-end milling
Simplified and efficient calibration of a mechanistic cutting force model for ball-end milling
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DOI：
10.1016/j.ijmachtools.2003.09.007
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发表时间：
2004-02
影响因子：
14
通讯作者：
A. Azeem;Hsi-Yung Feng;Lihui Wang
中科院分区：
文献类型：
--
作者：
A. Azeem;Hsi-Yung Feng;Lihui Wang
切削力机理模型的经验系数的准确评估对预测切削力的可靠性至关重要。本文提出了一种确定球头铣刀切削力系数的简便有效的方法。这种新方法的独特之处在于，只有一个单一的半槽切割是要执行校准的经验力系数是有效的，在广泛的切削条件。瞬时切削力与球头铣刀上建立的螺旋切削刃轮廓一起使用。半槽校准切削使得能够连续确定沿刀具轴线沿着变化的切削力学参数的集总离散值，而尺寸效应参数是根据未变形切屑厚度随刀具旋转的已知变化来确定的。一系列的验证试验切削实验证明了本方法在确定切削力系数方面的有效性。
Accurate evaluation of the empirical coefficients of a mechanistic cutting force model is critical to the reliability of the predicted cutting forces. This paper presents a simplified and efficient method to determine the cutting force coefficients of a ball-end milling model. The unique feature of this new method is that only a single half-slot cut is to be performed to calibrate the empirical force coefficients that are valid over a wide range of cutting conditions. The instantaneous cutting forces are used with the established helical cutting edge profile on the ball-end mill. The half-slot calibration cut enables successive determination of the lumped discrete values of the varying cutting mechanics parameters along the cutter axis whereas the size effect parameters are determined from the known variation of undeformed chip thickness with cutter rotation. The effectiveness of the present method in determining the cutting force coefficients has been demonstrated experimentally with a series of verification test cuts.