期刊论文

Study on temperature field distribution of tool-chips contact area for dry cutting 45 hardened steel

中文

现代制造工程

1671-3133

2017

1

94-99,156

10.16731/j.cnki.1671-3133.2017.01.018

中国博士后面上基金项目（2013M542123） 湖南省自然科学基金资助项目（11JJ4035） 湖南省重大专项项目（2012FJl007） 湖南省自然科学省市联合基金项目（2015JJ5023）

本校为第一机构

针对45淬硬钢干切削过程,考虑刀-屑接触区域热流密度不均匀性和热分配率不均匀性等因素,基于热源法建立前刀面刀-屑接触区域三维温度场解析模型,并利用验证试验和解析模型,研究前刀面刀-屑接触区域温度场分布规律。结果表明:模型预测值与实验值相吻合,两者误差低于3. 26%;且前刀面刀-屑接触区域温度场分布呈均匀梯度分布;最高温度位置出现在刀-屑接触界面粘结摩擦区域结束处附近,最高温度位置受切削速度影响较小;最低温度位置出现在刀-屑接触界面边缘处。该模型具有较高准确度,对研制新型刀具、降低刀具磨损、提高加工效率和加工质量具有重要指导意义。

A theoretical model is proposed to predict the temperature distribution of tool-chips contact area in dry cutting 45 hard- ened steel. In homogeneity of heat flux density and the rate of heat distribution between of tool and chips are considered in this model. Temperature distribution of tool-chips contact area was studied based on the relevant cutting experiment and the model. Results show that the calculation results basically agree with the experiment data,the deviations are less than 3.26%. The tem- perature field distribution distribute with uniform gradient in tool-chips contact area. It...