Milling-layer thickness model based on a trochoid trajectory

GUAN Liwen; Zhao Xiao; WANG Liping

doi:10.16511/j.cnki.qhdxxb.2017.26.062

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Journal of Tsinghua University(Science and Technology) ›› 2017, Vol. 57 ›› Issue (11) : 1185-1189. DOI: 10.16511/j.cnki.qhdxxb.2017.26.062

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Milling-layer thickness model based on a trochoid trajectory

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Abstract

The milling-layer thickness model greatly affects the prediction accuracy of instantaneous milling forces. Current milling layer thickness models can accurately predict the instantaneous change in the milling layer thickness foe small feed rates per tooth, but are less accurate with large feed rates per tooth. The study analyzes the milling blade movement pattern as the tool rotates and the work-piece feeds in to the tool. The model predicts the trochoid trajectory and the milling start and end angles. The milling-layer thickness model is then based on the trochoid trajectory. Trochoid trajectory model is more accurate for both large and small feed rates per tooth than the circle model and the equivalent uniform thickness model.

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milling-layer thickness model / trochoid / tool trajectory

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GUAN Liwen, Zhao Xiao, WANG Liping. Milling-layer thickness model based on a trochoid trajectory[J]. Journal of Tsinghua University(Science and Technology). 2017, 57(11): 1185-1189 https://doi.org/10.16511/j.cnki.qhdxxb.2017.26.062

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