中文摘要在切削加工过程中，刀具在切削工件时，一方面切下切屑，一方面刀具自身也会发生破损，而切削刃由于自身所处的位置的特殊性，往往会成为最容易遭受损坏的部分，刀刃会磨损或破损，这样，不仅会严重的影响工件的尺寸加工精度，还会影响已加工表面的质量，更严重的还可能对车床造成不同程度的损坏，因此不管是学术上抑或是生产生活上，找到一种更为合理的刀具刃形已经是迫在眉睫的事了，并且国内外已有不少研究者对此进行了各种实验和研究。在以往的研究过程中，许多研究人员为了方便，常常会将刀尖的形状抽象为理想锋利的，可是在实际切削过程中，刀刃在切削力、切削热、化学作用以及各方面因素的影响下很快就会发生不同程度的磨损，事实证明理想锋利的刀尖并不存在。52344

本课题基于有限元分析的方法对不同刃形的刀具的切削过程进行模拟研究。分析温度、切削热、切削力等因素在切削过程中对切削刃的影响，分析不同的刀具刃形在切削过程中的变化，进而改进优化刀具刃形，提高刀具寿命，提高加工表面质量，提高生产效率。

毕业论文关键字：切削刃；有限元；切削力；切削温度

Abstract In the cutting process, cutting tool in cutting the workpiece, hand cut cutting, hand tool would be damaged, and the cutting edge because its special location, often become the most easily damaged parts, the blade will wear or damage, like this, not only the processing precision size the effects of a serious, will also affect the quality of the machined surface, may also be caused by more serious damage of different degree on the lathe, therefore, whether academic or production of life, to find a more reasonable cutter blade is already imminent thing, and there are many researchers proceed the experimental study of various. In the former research, many researchers in order to facilitate, often will tip shape abstract ideal sharp, but in the actual cutting process, cutting edge occurs soon wear extent in force, thermal, chemical and the impact of various factors, there is no ideal sharp tip.

This paper based on the finite element analysis tool for different blade simulation of the cutting process. Analysis of temperature, heat, cutting force and other factors on the impact of the cutting edge in the cutting process, the cutting edge of different shape changes in the cutting process, and then improve the optimization of cutter blade, improve tool life, improve the surface quality,improve production.efficiency.

Keywords:cutting edge;Finite element;cutting force;temperature

目录

第一章 绪论 1

1.1 研究背景 1

1.2 刀具磨损形式 1

1.3 研究综述 2

1.4 本论文研究内容 7

第二章 deform-2d软件建模及有限元分析 8

2.1 Deform-2d软件介绍 8

2.2 利用Deform-2d软件建模分析 9

2.2.2  网格划分和边界条件 12

2.2.3 材料属性 14

2.2.4 刀屑界面摩擦模型 14

第三章 仿真结果 16

3.1 切削力 16

3.2 切削温度 19

3.3 机理分析 24

第四章 结论 28

致谢 29