Identification of optimal machining parameters in trochoidal milling of Inconel 718 for minimal force and tool wear and investigation of corresponding effects on machining affected zone depth
Identification of optimal machining parameters in trochoidal milling of Inconel 718 for minimal force and tool wear and investigation of corresponding effects on machining affected zone depth
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DOI：
10.1016/j.jmapro.2019.03.048
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发表时间：
2019-07
影响因子：
6.2
通讯作者：
Abram Pleta;Gouthaman Nithyanand;Farbod Akhavan Niaki;L. Mears
中科院分区：
文献类型：
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作者：
Abram Pleta;Gouthaman Nithyanand;Farbod Akhavan Niaki;L. Mears
随着全球经济的快速变化，提高铣削实践的生产率和效率至关重要。为此，研究人员已经转向替代铣削刀具路径，如余摆线铣削，这已被证明可以增加刀具寿命，并相应减少某些应用的加工时间。为了更好地理解次摆线铣削过程并优化其制造场景，必须研究切削力的建模;半机械方法是这项工作的重点。这种类型的力建模的基础在于结合切削力系数和边缘力系数的未切削切屑厚度建模。与一种新的未切削的芯片厚度模型，作者在以前的工作中提出的，这项调查着眼于了解模型系数的依赖关系，因为它们涉及到余摆线路径参数沿着与加工输出，如最大切削力和刀具磨损。此外，加工参数的调查，他们如何涉及到提高刀具寿命和切削力，利用田口方法，其中最佳参数被发现最小的刀具磨损和切削力。次摆线路径上的加工样品的次表面的影响，因为它们涉及到加工影响区，也研究了在径向和轴向方向。结果发现，刀具磨损增加的深度的加工影响区，增加切屑厚度。
Increasing the productivity and efficiency of milling practices is of high importance with the rapidly changing global economy. To this end researchers have turned to alternative milling toolpaths, such as trochoidal milling, which has been shown to increase tool life with a corresponding reduction in machining time for some applications. To better understand the trochoidal milling process and optimize it for manufacturing scenarios, the modeling of cutting forces must be investigated; semi-mechanistic methods are the focus of this work. The basis for this type of force modeling lies in uncut chip thickness modeling combined with cutting force coefficients and edge force coefficients. With a novel uncut chip thickness model proposed by the authors in a previous work, this investigation looks to understand the dependence of the model coefficients as they relate to trochoidal path parameters along with machining outputs such as maximum cutting force and tool wear. Furthermore, the machining parameters are investigated as to how they relate to the improvement of tool life and cutting force utilizing the Taguchi method, where optimal parameters are found for minimum tool wear and cutting forces. The effects of the trochoidal path on the subsurface of the machined samples as they relate to the machining affected zone, are also investigated in both the radial and axial directions. It is found that tool wear increases the depth of the machining affected zone as does increasing chip thickness.