织构分布对刀具切削性能影响的有限元分析

发布时间：2018-03-25 10:36

本文选题：表面织构　切入点：有限元仿真　出处：《表面技术》2017年09期

【摘要】：目的研究刀具表面织构分布对刀具切削性能的影响。方法基于大型非线性分析软件ABAQUS进行刀具二维切削TI6AL4V的有限元仿真,收集切削力数据,通过切削实验进行验证,误差符合后进行等间距、非等间距和混合型织构的有限元仿真,收集切削力、切削热等切削数据进行分析。结果提取结果后与无织构刀具相比,等间距织构刀具的最高温度降低12.4%,非等间距织构刀具的最高温度降低14.5%,混合型织构刀具的最高温度降低16.5%。与无织构刀具相比,等间距织构刀具的主切削力降低9.8%,非等间距织构刀具的主切削力降低11.2%,混合型织构刀具的主切削力降低12.6%。结论在刀具表面加工适当的织构可以提高刀具的切削性能,织构间距越小,织构的减摩作用越明显,与等间距织构相比,非等间距织构减摩效果更好。织构分布过于密集易造成加工中的震动问题,在微织构中添加尺寸更小的微细级织构,既能减小刀屑接触面积,又避免了因间距过小导致刀具强度降低的问题。
[Abstract]:Aim to study the influence of the texture distribution on the cutting performance of cutting tools. Methods based on the large-scale nonlinear analysis software ABAQUS, the finite element simulation of two dimensional cutting TI6AL4V was carried out, and the cutting force data were collected and verified by cutting experiments. The finite element simulation of equal spacing, non-equal spacing and mixed texture is carried out after the error is consistent. Cutting force and cutting heat are collected and analyzed. Results the results are compared with those of non-texture cutting tools. The maximum temperature of the equidistant texture tool is decreased by 12.4, the maximum temperature of the non-equidistant texture cutter is decreased by 14.5and the maximum temperature of the mixed texture tool is reduced by 16.5. compared with the non-texture tool, the maximum temperature of the non-equidistant texture cutter is decreased by 16.5. The main cutting force of the equidistant texture cutting tool is reduced by 9.8, the main cutting force of the non-equidistant texture cutter is decreased by 11.2and the main cutting force of the mixed texture cutter is reduced by 12.6.The conclusion is that the cutting performance of the tool can be improved by proper texturing on the tool surface. The smaller the texture spacing is, the more obvious the antifriction effect of texture is. Compared with equal spacing texture, non-equidistant texture has better antifriction effect. Adding smaller microtexture to microtexture can not only reduce the contact area of knife chip, but also avoid the problem of tool strength decreasing due to the small spacing.
【作者单位】：青岛科技大学;
【基金】：山东省自然科学基金资助项目(ZR2016EEM41)~~
【分类号】：TG71

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