当前位置: X-MOL 学术CIRP Ann. Manuf. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The energetic characteristics of milling with changing cross-section in the definition of specific cutting force by FEM method
CIRP Journal of Manufacturing Science and Technology ( IF 4.6 ) Pub Date : 2020-12-06 , DOI: 10.1016/j.cirpj.2020.11.006
János Kundrák , Bernhard Karpuschewski , Zoltán Pálmai , Csaba Felhő , Tamás Makkai , Dmytro Borysenko

With cutting technology, including milling, new tasks must constantly be solved, for which the knowledge of the cutting force is necessary from the theoretical point of view and for the practical application of the technology. This article summarizes the results of a project to study the cutting force during milling. The technological analysis of milling was performed by FEM simulation, which was validated by measuring the cutting force. When milling, only one insert was placed in the cutter, the workpiece was C45 rolled steel, which was machined with different depths of cut ap and feed rates fz while the cross section Ac = ap · fz = 0.9 mm2 was kept constant. The calculations proved that the effect of the cross-section of the material deposited during milling, and thus the specific features of the technology, is well characterized by the chip ratio ap/fz. It has been shown that from the energy point of view it is expedient to avoid the chip ratio of ap/fz = 1 in the applied technology. It is preferable to set the value as far away as possible, preferably aiming to use ap/fz < 1.



中文翻译:

有限元法定义比切削力时变截面铣削的能量特征

对于包括铣削在内的切削技术,必须不断解决新的任务,从理论的角度以及技术的实际应用,必须掌握切削力的知识。本文总结了研究铣削过程中切削力的项目结果。通过有限元模拟对铣削进行了技术分析,并通过测量切削力进行了验证。铣削时,仅将一个刀片放入刀具中,工件为C45轧钢,以不同的切削深度a p和进给速度f z进行加工,而横截面A c  = a p  ·f z  = 0.9 mm 2保持不变。计算证明,铣削过程中沉积的材料横截面的影响以及该技术的特定特征都可以通过切屑比率a p / f z很好地表征。已经表明,从能量的观点出发, 在所应用的技术中避免p / f z= 1的芯片比率是有利的。最好将值设置得尽可能远,最好使用p / f z  <1。

更新日期:2020-12-07
down
wechat
bug