叶脉仿生分形纹理化金刚石砂轮磨削氧化锆陶瓷试验评价

张晓红; 何田仲森; 温东东; 李超; 王卓然; 龙翼翔

doi:10.13394/j.cnki.jgszz.2023.0131

叶脉仿生分形纹理化金刚石砂轮磨削氧化锆陶瓷试验评价

doi: 10.13394/j.cnki.jgszz.2023.0131

张晓红^{1, 3,},
何田仲森^{1, 3},
温东东²,
李超^{1, 3},
王卓然^{1, 3},
龙翼翔^{1, 3}

1.
湖南理工学院机械工程学院, 湖南岳阳 414006
2.
湖南科技大学机电工程学院, 湖南湘潭 411201
3.
机械工业激光磨削复合智能制造与服役性能优化重点实验室, 湖南岳阳 414006

基金项目: 湖南省自然科学基金杰出青年项目（2021JJ10031）; 国家自然科学基金（51875200，51905170）。

详细信息

作者简介:
张晓红，男，1982年生，博士、教授。主要研究方向：精密与超精密加工。E-mail：jansbomb@126.com

中图分类号: TG74 + 3; TH162; TG58; TQ164
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- 被引次数: 0
出版历程
- 收稿日期: 2023-06-20
- 修回日期: 2023-09-06
- 网络出版日期: 2023-11-06
- 刊出日期: 2024-06-28

Experimental evaluation of grinding zirconia ceramics with leaf vein bionic fractal textured diamond grinding wheel

ZHANG Xiaohong^{1, 3
,},
HE Tianzhongsen^{1, 3},
WEN Dongdong²,
LI Chao^{1, 3},
WANG Zhuoran^{1, 3},
LONG Yixiang^{1, 3}

1.
College of Mechanical Engineering , Hunan Institute of Science and Technology, Yueyang 414006, Hunan, China
2.
School of Mechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
3.
Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang 414006, Hunan, China

摘要

摘要: 针对氧化锆陶瓷在传统砂轮磨削过程中存在的磨削力大、加工质量较差等问题，根据叶脉分形结构在减阻导流与散热传质方面的优异性能，建立叶脉分形角模型，设计30.0°、45.0°和60.0° 3种不同分形角度的叶脉仿生分形纹理化金刚石砂轮，对比分析原始砂轮与3种仿生分形砂轮对氧化锆陶瓷磨削表面粗糙度R_a、磨削力和磨削力比的影响。结果表明：仿生分形砂轮比原始砂轮具有更好的磨削性能；与原始砂轮相比，仿生分形砂轮的法向磨削力降低了12.7%～55.8%，切向磨削力降低了8.1%～40.3%，且其对表面粗糙度R_a影响不明显；当分形角为30.0°时，获得的磨削力比最小值为1.4～3.0，表面粗糙度R_a最小值为1.824 μm。
- 叶脉仿生分形结构 /
- 分形角 /
- 激光纹理化 /
- 氧化锆陶瓷 /
- 磨削性能
Abstract: To address the challenges of high grinding force and poor processing quality in grinding zirconia ceramics with traditional grinding wheels, this study explores the use of leaf vein bionic fractal textured diamond grinding wheels. These wheels, designed with fractal angles of 30.0°, 45.0°, and 60.0°, leverage the leaf vein bionic fractal texture's capabilities in reducing drag, guiding flow, heat dissipation, and mass transfer. The effects of the original grinding wheel and the three types of bionic fractal grinding wheels on the surface roughness (R_a), grinding force, and grinding force ratio of zirconia ceramics were compared and analyzed. The results show that the bionic fractal grinding wheels outperform the original grinding wheel. Specifically, compared to the original grinding wheel, the normal grinding force of the bionic fractal grinding wheel is reduced by 12.7% to 55.8%, and the tangential grinding force is reduced by 8.1% to 40.3%. The bionic fractal grinding wheels have not obvious effects on the surface roughness R_a. When the fractal angle is 30.0°, the minimum grinding force ratio is 1.4 to 3.0, and the minimum surface roughness R_a is 1.824 μm.
- leaf vein fractal texture /
- fractal angle /
- laser texturing /
- zirconia ceramics /
- grinding performance

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图 1 激光纹理化试验平台

Figure 1. Laser texturing test platform

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图 2 激光纹理化方法示意图

Figure 2. Laser texturing method sketch

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图 3 激光纹理化图案几何参数示意图

Figure 3. Laser textured pattern geometry parameter diagram

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图 4 磨削试验装置

Figure 4. Grinding test device

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图 5 不同分形角度时的金刚石砂轮表面形貌

Figure 5. Surface morphologies of diamond grinding wheels at different fractal angles

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图 6 不同分形角对法向磨削力的影响

Figure 6. Effect of different fractal angles on normal grinding forces

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图 7 不同分形角对切向磨削力的影响

Figure 7. Effect of different fractal angles on tangential grinding forces

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图 8 不同磨削深度下分形角对法向和切向力力比的影响

Figure 8. Effect of fractal angles on normal force and tangential force ratios at different grinding depths

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图 9 不同分形角砂轮和普通砂轮磨削后工件的表面粗糙度和三维形貌

Figure 9. Surface roughness and 3D morphology of workpieces after grinding with different fractal angle grinding wheels and ordinary grinding wheel

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图 10 工件SEM形貌

Figure 10. SEM morphology of workpiece

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表 1 烧蚀宏观主脉与侧脉的激光参数

Table 1. Laser parameters for ablation of main and side veins

参数	主脉	侧脉
焦距 f / mm	105	105
光斑直径 d_f / μm	60	60
激光功率 P_avg / W	23	19
脉冲频率 f_p / kHz	25	25
扫描速度 V_s / (mm·s⁻¹)	2 100	2 100
扫描次数 N	33	30

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表 2 青铜结合剂金刚石砂轮参数

Table 2. Bronze bond diamond grinding wheel parameters

参数	类型或取值
砂轮型号	SDC120N100B
砂轮直径 D / mm	180
内孔直径 d / mm	32
砂轮宽度 W / mm	20
磨粒层厚度 h / mm	5
磨粒基本颗粒尺寸 D₅₀ / μm	70～130
磨粒浓度φ / %	75
磨粒	金刚石

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表 3 氧化锆陶瓷材料的机械特征

Table 3. Mechanical characteristics of zirconia ceramic materials

氧化锆陶瓷	取值
密度 ρ / (kg·m⁻³)	5.7 × 10³
弹性模量 E / GPa	200
硬度 H / GPa	12
断裂韧性 E_IC / (MPa·m^1/2)	8

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表 4 磨削试验参数

Table 4. Grinding test parameters

磨削参数	类型或取值
砂轮速度 V / (m·s⁻¹)	35
工件进给速度 V_f / (m·min⁻¹)	2
磨削深度 a_p / μm	5, 10, 15, 20
磨削方式	顺磨
磨削液	W20水基冷却液

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