Theoretical Modeling and Experimental Verification of Ball-end Milling Curved Surface Micro-units

Abstract

Abstract: Aiming at unique “small pits” micro-units structure of ball-end milling machined surface， and combined with the mathematical relationship among surface topography geometric parameters， the characteristic parameters and characteristic line expressions of the micro-units were solved. According to the experimental results， the characteristic parameters of the micro-units were corrected and the accuracy was verified. Furthermore， the three-dimensional simulation shape of curved surface micro-units was established. The research results show that the width relative error of the modified surface micro-units is as 1.88% and the length relative error is as 7.60%， which indicates that the theoretical model is more accurate.

Key words: ball-end mill, micro-unit, characteristic parameter, three-dimensional shape of curved surface

摘要： 针对球头铣刀已加工表面特有的“小凹坑”微单元结构，结合表面形貌几何参数对应的数学关系，求解了微单元特征参数及特征线表达式；结合实验结果修正了微单元特征参数并验证了其准确性，进而建立了曲面微单元三维仿真形貌。研究结果表明：修正后曲面微单元宽度相对误差为1.88%，长度相对误差为7.60%，验证了所建理论模型的准确性。

关键词: 球头铣刀, 微单元, 特征参数, 曲面三维形貌

CLC Number:

TG156

ZHANG Wei;DU Xiaofeng;CHENG Chao;LI Pengfei. Theoretical Modeling and Experimental Verification of Ball-end Milling Curved Surface Micro-units[J]. China Mechanical Engineering.

张为;都晓锋;程超;李鹏飞. 球头铣刀加工曲面微单元理论建模与实验验证[J]. 中国机械工程.

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