切削SiCp/6005Al复合材料的PCD刀具磨损

林洁琼; 贾茹; 周岩; 谷岩

doi:10.13394/j.cnki.jgszz.2022.0143

切削SiCp/6005Al复合材料的PCD刀具磨损

doi: 10.13394/j.cnki.jgszz.2022.0143

长春工业大学机电工程学院, 长春130012

基金项目: 国家自然科学基金（U19A20104）

详细信息

作者简介:
通信作者：林洁琼，女，1969年生，教授、博士生导师。主要研究方向：精密加工。E-mail：linjieqiong@ccut.edu.cn

中图分类号: TG51；TG71；TG58
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-06
- 修回日期: 2022-10-29
- 录用日期: 2023-12-01
- 刊出日期: 2023-06-20

PCD tool wear in cutting SiCp/6005Al composites

School of Mechanical and Electrical Engineering, Changchun University of Technology, Changchun 130012, China

摘要

摘要:
为研究SiCp/6005Al切削时的刀具磨损机制及刀具磨损对切削力、切削温度、工件表面质量的影响，进行不同转速V和不同进给速度f下的切削试验，观察每组试验刀具切削后的磨损形貌，并通过监测动态切削力和切削温度来探究刀具的磨损机制。结果表明：工件转速提高使切削温度明显升高，但对切削力的影响很小；进给速度提高使切削力明显升高，而切削温度的变化范围较小。改变进给速度带来的力载荷变化是影响前刀面磨损的主要因素，改变工件转速带来的切削温度变化是影响后刀面磨损的主要因素。此外，刀具磨损是磨粒磨损、黏结磨损的综合作用结果，且刀具磨损会对切削力、切削温度和加工表面质量产生不利影响。
- 刀具磨损 /
- PCD刀具 /
- SiCp/6005Al /
- 切削温度 /
- 表面质量
Abstract:
To study the tool wear mechanism of turning SiCp/6005Al and the influence of tool wear on cutting force, cutting temperature and workpiece surface quality, cutting experiments at different speeds V and different feed speeds f were carried out. Then the tool wear morphology of each group of experimental tools after cutting was observed and the tool wear mechanism was explored by monitoring the dynamic cutting force and cutting temperature. Finally, the influence of worn tools on cutting force, cutting temperature and surface quality under different process parameters was studied. The results show that the increase of workpiece speed significantly increases the cutting temperature, but it has little effect on the cutting force. However, the increase of feed speed significantly increases the cutting force and the variation range of cutting temperature is small. The change of force load caused by changing feed speed is the main factor affecting the wear of rake face. The change of cutting temperature caused by changing the workpiece speed is the main factor affecting the flank wear. In addition, tool wear is the comprehensive result of abrasive wear and bonding wear. And it will have an adverse impact on cutting force, cutting temperature and machined surface.
- tool wear /
- PCD tool /
- SiCp/6005Al /
- cutting temperature /
- surface quality

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图 1 试验平台

Figure 1. Experimental platform

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图 2 切削温度曲线

Figure 2. Cutting temperature curve

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图 3 主切削力曲线

Figure 3. Main cutting force curve

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图 4 不同进给速度下切削SiCp/6005Al时，刀具前刀面的SEM图像及三维图像

Figure 4. SEM images and 3D images of tool rake face when cutting SiCp/6005Al at different feed rates

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图 5 不同工件转速下切削SiCp/6005Al时，刀具前刀面的SEM图像及三维图像

Figure 5. SEM images and 3D images of tool rake face when cutting SiCp/6005Al at different workpiece speeds

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图 6 积屑瘤

Figure 6. Built-up edge

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图 7 前刀面的SEM图像与EDS能谱分析图

Figure 7. SEM image and EDS energy spectrum analysis of rake face

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图 8 不同进给速度下切削SiCp/6005Al 432 s后的后刀面磨损形貌图像

Figure 8. Wear morphology image of flank after cutting SiCp/6005Al for 432 s at different feed rates

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图 9 不同转速下切削SiCp/6005Al 432 s后的后刀面磨损形貌图像

Figure 9. Wear morphology image of flank after cutting SiCp/6005Al for 432 s at different feed rates

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图 10 切削SiCp/6005Al 432 s时的后刀面磨损形貌SEM图

Figure 10. SEM of flank wear morphology after cutting SiCp/6005Al 432 s

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图 11 刀具磨损对切削力与切削温度的影响

Figure 11. Influence of tool wear on cutting force and cutting temperature

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图 12 刀具磨损对表面粗糙度的影响

Figure 12. Effect of tool wear on surface roughness

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图 13 表面形貌

Figure 13. Surface morphology

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图 14 磨损刀具的光整效果

Figure 14. Finishing effect of worn tools

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表 1 SiCp/6005Al的力学性能

Table 1. Mechanical properties of SiCp/6005Al

材料属性	数值
密度 ρ / (g·cm⁻³)	2.97
弹性模量 E / GPa	202
抗弯强度 σ_b / MPa	362
热导率 k / (W·m⁻¹·K⁻¹)	214
扩散系数 α / (mm⁻²·s)	94.3
比热容 C_p / (J·g⁻¹·K⁻¹)	0.848
热膨胀系数 β / (10⁻⁶·℃⁻¹)	6.21

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表 2 6005Al合金主要化学成分

Table 2. Main chemical constituents of 6005Al alloy

元素	质量分数 ω / %
铜	0.3
锰	0.5
镁	0.4~0.7
锌	0.2
铝	余量

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表 3 试验参数

Table 3. Experimental parameters

切削参数	数值
转速 V / (r·min⁻¹)	500, 800, 1 100, 1 400
进给速度 f / (mm·r⁻¹)	0.04, 0.06, 0.08, 0.10
切削深度 a_p / mm	0.03

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