文献类型：会议论文

英文题名：Estimation of Eccentric Distance for Four-tooth End Mills Based on Amplitude Spectrum

作者：Liu, Can[1];Wu, Jingquan[1];Li, Guanghui[1];Tan, Guangyu[1]

机构：[1]Guangdong Ocean Univ, Engn Coll, Zhanjiang 524088, Guangdong, Peoples R China

会议论文集：International Conference on Mechatronics and Control Engineering (ICMCE 2012)

会议日期：NOV 29-30, 2012

会议地点：Guangzhou, PEOPLES R CHINA

语种：英文

外文关键词：End Mills; Eccentricity; Force; Tooth Frequency; Spindle Frequency

外文摘要：Time-domain expressions of nominal component and eccentric component that composing horizontal peripheral milling force are derived from geometry of down milling, they are periodic functions with fundamental frequencies same as tooth-frequency and spindle-frequency respectively. By expanding these two time-domain expressions with Taylor series, the frequency-domain description of periheral milling force is obtained. Further mathematical reasoning is exerted on this frequency-domain description, and it proved that as for four-tooth end mills, even-order harmonics of eccentric milling force do not exist, and the amplitude of spindle-frequency component be linear with eccentric distance, but irrelevant with eccentric angle. Above research results imply that the tooth-frequency component of four-tooth end mills is irrelevant with eccentricity, and that eccentric distance can be estimated with amplitudes of tooth-frequency and spindle-frequency components. Results of milling experiment imply that this eccentric-distance estimating method be effective. Spectral characteristics of eccentric milling force for four-tooth end mills are revealed with theory deduction, and the estimation algorithm for eccentric distance with simple calculation is present. Study conclusions can be used in eccentric-geometry estimating and in milling-force modeling.