基于时变热源的丝杠旋风铣削瞬态温度建模方法研究

doi:10.3901/JME.2018.15.180

机械工程学报 ›› 2018, Vol. 54 ›› Issue (15): 180-190.doi: 10.3901/JME.2018.15.180

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基于时变热源的丝杠旋风铣削瞬态温度建模方法研究

何彦¹, 刘超¹, 李育锋¹, 王乐祥¹, 王禹林²

1. 重庆大学机械传动国家重点实验室重庆 400030;
2. 南京理工大学机械工程学院南京 210094

收稿日期:2017-08-18 修回日期:2017-12-28 出版日期:2018-08-05 发布日期:2018-08-05
通讯作者: 何彦(通信作者),女,1981年出生,博士,教授,博士研究生导师。主要研究方向为旋风铣削技术,绿色制造,制造系统工程,现代工艺及装备。E-mail:heyan@cqu.edu.cn
作者简介:刘超,男,1988年出生,硕士研究生。主要研究方向为旋风铣削绿色硬态切削技术。E-mail:20140713186@cqu.edu.cn;李育锋,男,1988年出生,博士后。主要研究方向为绿色制造,制造系统工程。E-mail:liyufengcqu@cqu.edu.cn;王乐祥,男,1989年出生,硕士研究生。主要研究方向为制造系统能效分析、节能优化方法调度及系统。E-mail:wanglexiang@cqu.edu.cn;王禹林,男,1981年出生,博士,教授。主要研究方向为绿色硬态切削技术、仿真优化。E-mail:wyl_sjtu@126.com
基金资助:
国家自然科学基金（51575072）、重庆市基础与前沿研究计划项目（cstc2015jcyjBX0088，cstc2013jcyjA70014）、江苏省“六大人才高峰”（2014-ZBZZ-006）和南京理工大学“卓越计划”“紫金之星”（2015-zijin-07）资助项目。

Transient Thermal and Analytical Model of Whirling Process Based on Time-varying Heat Source in Machining Screw

HE Yan¹, LIU Chao¹, LI Yufeng¹, WANG Lexiang¹, WANG Yulin²

1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030;
2. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094

Received:2017-08-18 Revised:2017-12-28 Online:2018-08-05 Published:2018-08-05

摘要/Abstract

摘要： 丝杠旋风铣削是一种高效、生态的加工工艺。其加工过程中会产生大量的切削热，从而会影响刀具寿命、工件完整性和加工精度。目前旋风铣削加工工艺的研究缺乏对丝杠旋风铣削加工过程中切削区域温升的研究。为此，综合考虑了旋风铣削加工过程未变形切屑厚度、宽度与面积时变特性，提出一种适用于丝杠旋风铣削加工过程中切削加工区域刀具、工件和切屑的时变热源瞬态温度建模方法。首先基于丝杠旋风铣削加工过程中未变形切削时变特性的分析，对丝杠旋风铣削加工过程中热源时变特征进行建模，包括时变未变形切屑几何特征、时变刀屑接触区域与时变边界模型；在此基础上，构建旋风铣削加工过程中时变热释放强度模型；进一步建立丝杠旋风铣削时变热源瞬态温升模型。试验分析结果证明了该方法的有效性，并基于该模型揭示了未变形切屑的几何特征、切削线速度对切削区域温度的动态变化规律，为旋风铣削工艺设计人员制定工艺时提供支持。

关键词: 时变热源, 丝杠, 温度, 旋风铣削

Abstract: Screw whirlwind milling is an efficient and eco-processing technology. In the process of screw whirlwind milling, a lot of heat and resultant temperature are generated, which further affects tool life, machining accuracy and surface integrity of workpiece. Little researches on temperature for screw whirlwind milling process are conducted. Againest the context, a time-varying heat source modeling method is proposed to analyze the transient temperature in the cutting zone for screw whirlwind milling, considering the time-varying characteristics of undeformed chip thickness, width and area. Firstly, the time-varying characteristics of undeformed cutting areas are analyzed. Further, the time-varying characteristics of the heat sources are modeled including undeformed chip geometry, time-varying tool-chip contact area and time-varying boundary model. On the basis of the above models, the time-varying heat liberation intensities of heat sources are modeled. Finally, the time-varying transient temperature model is developed to analyze the transient temperature. Experiments under different cutting conditions were performed on CNC whirling milling machine and the proposed methods for thermal analysis modeling proved to be effective and accurate to be used in the screw whirlwind milling process as well. The proposed model can be used to predict effects of undeformed chip geometry and cutting velocity on dynamic changes of the temperature in the cutting zone, which provides decision-making supports for process designers of whirlwind milling.

Key words: screw, temperature, time-varying heat source, whirlwind milling

中图分类号:

TG501

何彦, 刘超, 李育锋, 王乐祥, 王禹林. 基于时变热源的丝杠旋风铣削瞬态温度建模方法研究[J]. 机械工程学报, 2018, 54(15): 180-190.

HE Yan, LIU Chao, LI Yufeng, WANG Lexiang, WANG Yulin. Transient Thermal and Analytical Model of Whirling Process Based on Time-varying Heat Source in Machining Screw[J]. Journal of Mechanical Engineering, 2018, 54(15): 180-190.

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基于时变热源的丝杠旋风铣削瞬态温度建模方法研究

Transient Thermal and Analytical Model of Whirling Process Based on Time-varying Heat Source in Machining Screw

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