刘伟,刘顺,梁桂强,袁厚才.微织构刀具切削性能及减摩效果的仿真分析[J].表面技术,2022,51(2):338-346. LIU Wei,LIU Shun,LIANG Gui-qiang,YUAN Hou-cai.Finite Element Analysis on Cutting Performance and Friction Reduction Effect of Micro-Texture Tools[J].Surface Technology,2022,51(2):338-346 |
微织构刀具切削性能及减摩效果的仿真分析 |
Finite Element Analysis on Cutting Performance and Friction Reduction Effect of Micro-Texture Tools |
投稿时间:2021-05-02 修订日期:2021-07-21 |
DOI:10.16490/j.cnki.issn.1001-3660.2022.02.034 |
中文关键词: 微织构 有限元仿真 钛合金 背向力 切削温度 减摩特性 |
英文关键词:micro-texture finite element simulation titanium alloy radial thrust force cutting temperature frictional characteristics |
基金项目:湖南省自然科学基金(2020JJ5178);湖南省教育厅科学研究资助(20A202,18A182);湖南省电磁装备设计与制造重点实验室开放基金(DC201901) |
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Author | Institution |
LIU Wei | Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material, Hunan University of Science and Technology, Xiangtan 411201, China |
LIU Shun | Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material, Hunan University of Science and Technology, Xiangtan 411201, China |
LIANG Gui-qiang | Hunan Linghang Kechuang Education Science & Technology Company, Xiangtan 411100, China |
YUAN Hou-cai | Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material, Hunan University of Science and Technology, Xiangtan 411201, China |
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中文摘要: |
目的 研究3种不同类型微织构在钛合金(TC4)切削过程中对刀具切削性能的影响。方法 基于有限元分析软件,在硬质合金刀具的前刀面上设计半圆凹型微织构、半圆凸型微织构以及梯形槽微织构3种不同类型的微织构,通过改变微织构直径或宽度、微织构间距和微织构覆盖长度,研究微织构刀具对背向力、切削温度以及摩擦力的影响。结果 对背向力而言,半圆凹型微织构刀具、半圆凸型微织构刀具、梯型槽微织构刀具在最佳微织构参数下可分别降低14.0%、13.9%、18.6%;但半圆凸型微织构直径大于8 μm时,背向力超过了无织构刀具。对切削温度而言,3种微织构刀具在最佳微织构参数下可分别降低5.9%、10.7%、9.6%。对刀具所受摩擦力而言,3种微织构刀具在最佳微织构参数下可分别降低23.0%、27.7%、21.9%。 结论 合理的表面微织构能够改善刀具的切削性能。梯型槽微织构刀具降低背向力效果最佳;半圆凸型微织构刀具降温和减摩效果最佳。刀具切削性能随微织构直径和微织构间距的增加呈先减小后增大的趋势,且存在最优的微织构参数。在刀-屑接触长度范围内,微织构覆盖长度越长,减摩效果越好。 |
英文摘要: |
The work aims to study the effects of three different types of micro-textures on cutting performance of titanium alloy (TC4). Based on the finite element analysis software, the semicircular concave micro-texture, semicircular convex micro-texture and trapezoidal groove micro-texture were designed on the rake face of cemented carbide tool. The effects of micro-texture tool on radial thrust force, cutting temperature and friction force were studied by changing the micro-texture parameters, such as diameter or width, micro-texture spacing and covering length. Under the best micro-texture parameters, the radial thrust force of the semicircular concave micro-texture tool, semicircular convex micro-texture tool, and trapezoidal groove micro-texture tool was respectively reduced by 14.0%, 13.9%, and 18.6%. However, when the diameter of convex micro-texture was larger than 8 μm, the radial thrust force was greater than that of non-textured tool. The cutting temperature of three micro-texture tools was respectively reduced by 5.9%, 10.7% and 9.6%. The friction force of the three micro-texture tools was respectively reduced by 23.0%, 27.7% and 21.9%. Reasonable surface texture can improve the cutting performance of the tool. Trapezoidal groove micro-texture tool has the best effect of reducing radial thrust force. The semicircular convex micro-texture tool has the best effect of reducing cutting temperature and friction. With the increase of micro-texture diameter and spacing, the cutting performance of tools decreases firstly and then increases. And there are optimal texture parameters. In the range of the tool-chip contact length, the longer the textured covering length, the better the antifriction capability of micro-texture tool. |
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