A chatter free calibration method for determining cutter runout and cutting force coefficients in ball-end milling
A chatter free calibration method for determining cutter runout and cutting force coefficients in ball-end milling
复制标题
一种确定球头铣削中刀具跳动和切削力系数的无颤振校准方法
DOI：
10.1016/j.jmatprotec.2013.03.023
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发表时间：
2013-09
影响因子：
6.3
通讯作者：
Hu, Jun
中科院分区：
文献类型：
--
作者：
Yao, Zhen-Qiang;Liang, Xin-Guang;Luo, Lei;Hu, Jun
在球头铣削加工中，切削力系数的精度对预测可靠的切削力、稳定叶片和表面定位误差起着重要的作用。为避免传统全球浸切深标定试验的颤振风险，提出了一种低切深变超前角切削力系数标定的圆柱面铣削方法。提出了一个双三次多项式函数来描述球件切削刃的非均匀切削力系数和切屑尺寸对切削力的非线性影响。在考虑刀具跳动的情况下，建立了最大切屑厚度随超前角的变化规律。根据切屑厚度与导角的关系，提出了一种通过寻找刀槽完全脱离切削的临界导角的跳动识别方法。然后，对低切削深度条件采用集总等效方法，分别对切屑尺寸效应和切削力系数进行双三多项式模型的标定。通过一系列铣削试验验证了所提出的标定方法的准确性。稳定性试验表明，与变切削深度法相比，该方法具有明显的无抖振优势。
The accuracy of cutting force coefficients plays an important role in predicting reliable cutting force, stability lobes as well as surface location error in ball-end milling. In order to avoid chatter risk of the traditional calibration test with an entire-ball-immersed cutting depth, a cylindrical surface milling method is proposed to calibrate the cutting force coefficients with the characteristics of low cutting depth and varying lead angle. A dual-cubic-polynomial function is also presented to describe the non-uniform cutting force coefficients of the ball part cutting edge and the nonlinear chip size effect on cutting force. The variation of the maximum chip thickness versus the lead angle is established with the consideration of cutter runout. According to the dependence of chip thickness on lead angle, a runout identification method is introduced by seeking the critical lead angle at which one of the cutter flutes is just thoroughly out of cut. Then, a lumped equivalent method is adopted for the low cutting depth condition so that the dual-cubic-polynomial model can be calibrated for the chip size effect and the cutting force coefficients respectively. The accuracy of the proposed calibration method has been validated experimentally with a series of milling tests. The stability examinations indicate that the proposed method has an evident chatter-free advantage, compared with that of varying cutting depth method.
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DOI：
10.1115/1.1826077
发表时间：
2005-02
影响因子：
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作者：
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DOI：
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DOI：
10.1115/1.1556860
发表时间：
2003-05
影响因子：
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作者：
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