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论文题目:基于ANSYS的切削加工过程温度场

的分析

摘

要

在切削金属过程中所消耗的能量几乎90% 以上都转化为热, 致使工件、切屑和刀具的温度都上升, 其中刀具的温升与切削机理及切削参数密切相关, 并且直接影响刀具的磨损及其使用寿命.以传热学为基础,用有限差分数值方法, 对二元切削加工过程中切削区域温度场进行了计算机模拟。并以金刚石和硬质合金刀具切削钛合金为例, 进行了切削温度计算。经ANSYS分析, 模拟计算效果图与实测切削温度值吻合良好。这不削计算机模拟是可行的,同时也为探索难加工材料的切削加工特性提供了一种新的解析方法,可节省大量实验,为进一步预测最佳切削过程、指导新型刀具材料的开发奠定了基础。

关键词： ANSYS，切削温度，解析预测，有限差分

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Abstract

Based on heat transfer, by using a finite difference numerical method and per2sonal computer, temperature field at cut ting area in two dimensional machining processes is pre2dicted. Take machining titanium alloy by using diamond too l and carbide too l for examples, the cutting temperature is calculated. The calculated temperature is in good agreement with that measured. This indicates that computer simulation of cutting temperature is applicable. It also provides a new analytic method for the study of cutting and processing features of hard process2ing materials. A large amount of experiments will be saved thus. It lay a for p redict2ingthe optimum cut ting process and instructing the development of new cutter materials.

Key words：ANSYS，Cut ting temperature，Analytic prediction，Finite difference

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目 录

1绪论............................................................................................................................. 1 1.1概述 ...................................................................................................................... 1 1.2 研究切削温度的意义 ......................................................................................... 1 1.3 切削温度在国内外的研究现状 ......................................................................... 2 1.4 研究目的、意义和内容 ..................................................................................... 2 2.ANSYS软件简介 ...................................................................................................... 3 2.1 ANSYS 的定义 ................................................................................................... 3 2.2 ANSYS软件的内容 ............................................................................................ 3 2.3 ANSYS软件提供的分析类型 ............................................................................ 4 3 ANSYS 对物体的热分析 .......................................................................................... 5 3.1热分析简介 .......................................................................................................... 5 3.2 ANSYS热分析特点 ............................................................................................ 5 4 ANSYS在实例中的应用 ........................................................................................... 6 4.1 定义工作文件名和工作标题 ............................................................................. 6 4.2 定义单元类型 ..................................................................................................... 7 4.3 定义材料性能参数 ............................................................................................. 7 4.4建模 .................................................................................................................... 10 4.5划分网格 ............................................................................................................ 13 4.6加载求解 ............................................................................................................ 15 4.7查看结果 ............................................................................................................ 18 4.8 结果分析 ........................................................................................................... 18 5致谢 .......................................................................................................................... 19 6参考文献................................................................................................................... 20

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