| 基于单颗磨粒切削的CBN铰珩工具磨粒磨损研究 |
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| 引用本文： | 杨长勇,张念辉,苏浩,丁文锋.基于单颗磨粒切削的CBN铰珩工具磨粒磨损研究[J].金刚石与磨料磨具工程,2022,42(6):728-737. |
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| 作者姓名： | 杨长勇 张念辉 苏浩 丁文锋 |
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| 作者单位： | 南京航空航天大学 机电学院, 南京 210016 |
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| 基金项目： | 国家自然科学基金（52075252）。 |
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| 摘 要： | 采用单颗磨粒试验方法，以4Cr13不锈钢为修整材料，研究大长径比CBN铰珩工具修整过程中的磨粒磨损特性。试验结果显示:与普通切削相比，超声切削时的平均切削力降低60%～80%，但磨粒在短时间内大块破碎，磨削比严重下降。超声切削时的磨粒?工件接触比在0.6～0.8，磨粒主要处于断续切削过程，其最大切削宽度比普通切削时的增加2.7倍，且磨粒受到的最大瞬时切削力增加。根据点云信息对磨粒进行逆向建模，并对建立的单颗磨粒切削仿真模型的瞬时切削力进行定量分析。仿真结果显示:超声切削时的最大切向力比普通切削时的增加20%以上，且力的波动幅度超过80%。
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| 关 键 词： | 单颗磨粒切削 磨粒磨损 超声 切削力 |
| 收稿时间： | 2022-03-10 |
Research on abrasive wear dress of CBN honing tool based on single abrasive cutting |
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| YANG Changyong,ZHANG Nianhui,SU Hao,DING Wenfeng.Research on abrasive wear dress of CBN honing tool based on single abrasive cutting[J].Diamond & Abrasives Engineering,2022,42(6):728-737. |
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| Authors: | YANG Changyong ZHANG Nianhui SU Hao DING Wenfeng |
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| Affiliation: | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | The abrasive wear characteristics of large length to diameter ratio CBN single-pass honing tools during ultrasonic dressing process were studied by single abrasive test with 4Cr13 stainless steel as dressing material. The test results show that the average cutting force during ultrasonic cutting is reduced by 60%～80% compared to that during ordinary cutting. However, the abrasives break in a short time and the grinding ratio is seriously reduced. The abrasive-workpiece contact ratio during ultrasonic cutting is mainly between 0.6 and 0.8, and the abrasives are mainly in the intermittent cutting process. Moreover, the maximum cutting width during ultrasonic cutting increase by 2.7 times compared with that during ordinary cutting, leading to an increase in the maximum cutting force on the abrasives. According to the point cloud information, the abrasive was modeled inversely, and a single abrasive cutting simulation model was established to quantitatively analyze the maximum cutting force. The simulation results show that, compared with that during ordinary cutting, the maximum cutting force during ultrasonic cutting is more than 20% higher, and the fluctuation of cutting force is more than 80%. |
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