车刀的内冷式结构优化与变形分析

Internal Cooling Structure Optimization and Deformation Analysis of Lathe Tool

针对切削加工中刀具变形引起的加工误差,研究了刀具内冷结构对刀具变形的影响。建立了车刀受力变形和受热变形的数学模型,并进行有限元仿真分析。结果表明,在受力变形不大的情况下内冷式车刀的受热变形量大幅降低,工件的加工精度和表面质量显著提升。

Regarding the error caused by tool deformation during cutting process, the influence of internal cooling structure on tool deformation is investigated. The models for calculating stress and thermal deformations are established and analyzed by FEM simulation. The analysis results indicate that the thermal deformation of the internal cooling tool is greatly reduced in cases of little stress deformation. Therefore, the internal cooling structure can make the deformation greatly reduced,and the machining accuracy and surface quality is markedly improved.