An advanced numerical approach on tool wear simulation for tool and process design in metal cutting
An advanced numerical approach on tool wear simulation for tool and process design in metal cutting
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DOI：
10.1016/j.simpat.2016.09.001
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发表时间：
2017-01-01
影响因子：
4.2
通讯作者：
Doebbeler, B.
中科院分区：
文献类型：
--
作者：
Binder, M.;Klocke, F.;Doebbeler, B.
刀具磨损是金属切削中影响零件质量、切屑形成和切削过程经济性的重要指标。为了在刀具和工艺设计中充分考虑刀具磨损，需要预测金属切削过程中刀具磨损的仿真工具。在本文中，提出了一种先进的模拟方法，耦合FE模拟芯片形成与用户定义的子程序，扩展了商业FE代码的功能，磨损模拟奠定了这种方法的发展重点。将连续的磨损过程离散为有限步，并将磨损率建模为常数。基于臼井磨损率方程，将有限元模拟获得的局部热机械载荷转化为局部磨损率。磨损过程的几何表示是通过移动所接合的刀具域的有限元节点实现的。提出了一种新的迭代过程更新的工具的几何形状，以占磨损的进展。(C)© 2016 Elsevier B.V.版权所有。
Tool wear is an important criterion in metal cutting affecting part quality, chip formation and the economics of the cutting process. In order to account for tool wear adequately in tool and process design, simulation tools predicting tool wear in metal cutting processes are required. Within this paper, an advanced simulation approach is presented, coupling FE simulations of chip formation with a user-defined subroutine which extends the functionalities of the commercial FE code for wear simulation laying the focus on the development of this method. The continuous process of wearing is discretized in finite steps and the wear rate is modelled to be constant between. Based on the Usui wear rate equation, the local thermo-mechanical load obtained by FE simulation is transformed into local wear rates. The geometric representation of the wear progress is implemented via shifting of the finite element nodes of the engaged tool domain. A novel iterative procedure of updating the tool geometry in order to account for the wear progress is presented. (C) 2016 Elsevier B.V. All rights reserved.