| 旋转超声钻削的切削力数学模型及试验研究 |
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| 引用本文： | 张承龙,冯平法,吴志军,郁鼎文.旋转超声钻削的切削力数学模型及试验研究[J].机械工程学报,2011,47(15). |
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| 作者姓名： | 张承龙 冯平法 吴志军 郁鼎文 |
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| 作者单位： | 清华大学精密仪器与机械学系 北京 100084 |
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| 基金项目： | 国家自然科学基金(50975253); 国家高技术研究发展计划(863计划,2009AA44204); 摩擦学国家重点实验室(SKLT08B11)资助项目 |
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| 摘 要： | 通过分析硬脆材料脆性断裂去除机理和旋转超声加工特点,确定旋转超声加工时单颗磨粒的切削时间、切削深度、切削速度及切削轨迹长度,建立旋转超声恒进给率钻削硬脆材料的切削力数学预测模型。光学玻璃加工试验研究表明,切削力随进给速度的增大而增大,随主轴转速的提高而减小;在高进给速度条件下,切削力对主轴转速的变化更为敏感,在低主轴转速条件下,切削力对进给速度的变化更为敏感;从而很好地验证了已建立的切削力数学预测模型。旋转超声加工和普通加工的对比试验表明,旋转超声钻削加工可以有效降低切削力,一定程度上减小出孔崩边尺寸,从而提高加工效率、降低加工成本。根据旋转超声加工的表面粗糙度值略高于普通加工,提出硬脆材料脆性断裂去除时磨粒实际切削深度决定加工表面粗糙度的判断。
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| 关 键 词： | 旋转超声加工 钻削 切削力 数学模型 崩边尺寸 表面粗糙度 |
Mathematical Modeling and Experimental Research for Cutting Force in Rotary Ultrasonic Drilling |
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| ZHANG Chenglong,FENG Pingfa,WU Zhijun,YU Dingwen.Mathematical Modeling and Experimental Research for Cutting Force in Rotary Ultrasonic Drilling[J].Chinese Journal of Mechanical Engineering,2011,47(15). |
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| Authors: | ZHANG Chenglong FENG Pingfa WU Zhijun YU Dingwen |
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| Affiliation: | ZHANG Chenglong FENG Pingfa WU Zhijun YU Dingwen(Department of Precision Instrument and Mechanology,Tsinghua University,Beijing 100084) |
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| Abstract: | The effective cutting time,cutting depth,cutting speed,and cutting length of single particle in rotary ultrasonic drilling are determined by examining mechanism of hard and brittle material brittle-fracture removal and analyzing characteristic of diamond tools' rotary ultrasonic machining.A mathematical model is presented to predict the cutting force in rotary ultrasonic drilling.The experimental investigations of optical glass show that cutting force increases with the increase of feedrate and decreases wi... |
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| Keywords: | Rotary ultrasonic machining Drilling Cutting force Mathematical model Chipping size Surface roughness |
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