Simulation Study on Cutting Titanium Alloy with Micro-Texture Tool Based on ABAQUS

doi:10.12422/j.issn.1672-6952.2024.03.009

Abstract

Abstract:

A model of a micro-texture tool featuring various textures such as micro-pits, parallel grooves, vertical grooves, and oblique grooves was developed. The impact of these micro-texture tools on the turning process of titanium alloy was investigated using the finite element analysis software ABAQUS. Through an examination of cutting force, friction coefficient, cutting temperature, and surface residual stress for micro-texture tools with distinct morphologies, the optimal micro-texture morphology was determined. The findings reveal that micro-texture tools can effectively reduce the cutting force, friction coefficient, and cutting temperature while transforming surface residual stress from tensile to compressive on the workpiece. Furthermore, with increasing cutting speed, cutting force and cutting temperature rises, friction coefficient decrease, and the residual stress on the workpiece surface shifts from compressive to tensile stress, exhibiting an ascending trend.

Key words: ABAQUS, Micro-texture tool, Titanium alloy, Cutting speed, Cutting performance

摘要：

构建无织构刀具和呈微凹坑、平行槽、垂直槽、斜向槽形貌的微织构刀具模型，并利用有限元分析软件ABAQUS研究了微织构刀具对钛合金车削过程的影响。通过分析不同形貌微织构刀具在切削过程中的切削力、摩擦系数、切削温度和工件表面残余应力，确定了较优的微织构形貌；研究了切削速度对微织构刀具切削钛合金性能的影响。结果表明，微织构刀具能有效降低切削力、摩擦系数和切削温度，使工件表面残余应力由拉应力转变为压应力，其中垂直槽微织构刀具能最有效地改善切削质量；随着切削速度的提高，切削力和切削温度增大，摩擦系数减小，工件表面残余应力由压应力向拉应力转变并有增大的趋势。

关键词: ABAQUS, 微织构刀具, 钛合金, 切削速度, 切削性能

CLC Number:

TG71

Yan HE, Zicheng XU, Ping LI, Ming LIU, Xingjun GAO, Lin FAN. Simulation Study on Cutting Titanium Alloy with Micro-Texture Tool Based on ABAQUS[J]. Journal of Liaoning Petrochemical University, 2024, 44(3): 61-69.

何艳, 徐子成, 李萍, 刘铭, 高兴军, 凡林. 基于ABAQUS的微织构刀具切削钛合金仿真研究[J]. 辽宁石油化工大学学报, 2024, 44(3): 61-69.

Figures/Tables 15

Fig.1 The model size of the tool

Fig.2 Three-dimensional model of cutting titanium alloy with cemented carbide tool

Fig.3 Micro-texture tool structure and meshing

Table 1 Johnson-Cook constitutive model parameters of TC4

参数	数值	参数	数值
A/MPa	875	m	0.71
B/MPa	793	T_melt/℃	1 560
C	0.01	T/℃	20
n	0.386

Table 2 TC4 shear failure parameters

参数	数值	参数	数值
d₁	－0.090	d₄	0.014
d₂	0.250	d₅	3.870
d₃	－0.500

Fig.4 Effect of micro-texture morphology of tool on cutting force

Fig.5 The average total cutting force of the tool with different micro-texture morphology under smooth cutting condition

Fig.6 Average friction coefficient of cutting titanium alloy with different micro-texture morphologies

Fig.7 Temperature distribution cloud image of the front tool surface with different micro-texture morphologies

Fig.8 The change curve of the average cutting temperature of the front tool surface with different micro-texture morphology and cutting time

Fig.9 Effect of micro-texture tool morphology on residual stress of machined surface

Fig.10 The influence curve of cutting speed on the cutting force of vertical groove micro-texture tool

Fig.11 The average friction coefficient of cutting titanium alloy with vertical slot micro-texture tool at different cutting speeds

Fig.12 The change curve of the average cutting temperature of the front tool surface of vertical groove with the cutting distance at different cutting speeds

Fig.13 Residual stress curve of titanium alloy workpiece cut by vertical slot tool at different cutting speeds

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