Calibration of the Rheological Model considering the Temperature in Milling Operation of Ti-6Al-4V: a Preliminary Analysis

被引:0
|
作者
Pittala, G. M. [1 ]
Monno, M. [1 ]
机构
[1] Politecn Milan, Dept Mech Engn, I-20156 Milan, Italy
来源
MODELLING OF MACHINING OPERATIONS | 2011年 / 223卷
关键词
Rheological model; Milling; Temperature; Titanium; FINITE-ELEMENT SIMULATION; TITANIUM-ALLOY TI-6AL-4V; SERRATED CHIP FORMATION; HIGH-STRAIN RATE; FLOW-STRESS; BEHAVIOR; STEEL;
D O I
10.4028/www.scientific.net/AMR.223.314
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The machining of titanium alloys is critical also because of high temperature reached at the tool nose. The temperature of the cutting tool affects the tool life and, in order to decrease the temperature, cutting speed is reduced. The prediction of temperature can allow designing the cutting process, in terms of cutting parameters, or make the best selection of the cutting tool, with reduced experimental effort. The rheological model is an important issue in the FEM simulation of cutting in order to achieve a good accuracy, In this paper the milling operation will be considered. This is very common in manufacturing and, often, it represents the last operation, determining the final product quality. Cutting forces, measured by dynamometer table, and temperature, measured by infrared camera, have been recorded during milling tests. The infrared camera captures a part of the workpiece close to the cutting edge. First the material model has been set up considering only cutting forces; next, a sensitivity analysis about the material model parameters has been performed in order to assess the influence of temperature in the determination of the material parameters.
引用
收藏
页码:314 / 321
页数:8
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