Chatter stability prediction in four-axis milling of aero-engine casings with bull-nose end mill

An analytical model for chatter aero-engine casings is presented in this paper stability prediction in bull-nose end milling of And the mechanics and dynamics variations due to the complex cutter and workpiece geometry are considered by analyzing the effects of the lead angle on the milling process....

Full description

Saved in:
Bibliographic Details
Published in:Chinese journal of aeronautics 2015-12, Vol.28 (6), p.1766-1773
Main Authors: Zhou, Xu, Zhang, Dinghua, Luo, Ming, Wu, Baohai
Format: Article
Language:English
Subjects:
Aero-engine casings
Bull-nose end mill
Chatter
Four-axis milling
Stability lobe diagram
三维动态模型
公牛
发动机壳体
四轴
稳定性预测
端铣刀
铣削过程
颤振稳定性
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An analytical model for chatter aero-engine casings is presented in this paper stability prediction in bull-nose end milling of And the mechanics and dynamics variations due to the complex cutter and workpiece geometry are considered by analyzing the effects of the lead angle on the milling process. Firstly, the tool-workpiece engagement region is obtained by using a previously developed method and divided into several disk elements along the tool-axis direction. Secondly, a 3D dynamic model for stability limit calculation is developed and simplified into a 1D model in normal direction considering only the dominant mode of the workpiece. Then the cutting force coefficients, the start and exit angles corresponding to each disk element are determined. And the total stability lobe diagram is calculated using an iterative algorithm. Finally, several experimental tests are carried out to validate the feasibility and effectiveness of the proposed ~rediction approach.
ISSN:1000-9361
DOI:10.1016/j.cja.2015.06.001