Chatter Prediction for Variable Pitch and Variable Helix Milling

Regenerative chatter is a self-excited vibration that can occur during milling, which shortens the lifetime of the tool and results in unacceptable surface quality. In this paper, an improved semidiscretization method for modeling and simulation with variable pitch and variable helix milling is prop...

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Bibliographic Details
Published in:Shock and vibration 2015-01, Vol.2015 (2015), p.1-9
Main Authors: Wang, Yulong, Zhang, Yue, Yu, Zhiqiang, Wang, Tai-yong, Wang, Yong, Liu, Hengli
Format: Article
Language:English
Subjects:
Chatter
Cutting
Cutting tools
Delay
Mathematical models
Mechanical properties
Milling cutters
Observations
Retarding
Vibration
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Summary:Regenerative chatter is a self-excited vibration that can occur during milling, which shortens the lifetime of the tool and results in unacceptable surface quality. In this paper, an improved semidiscretization method for modeling and simulation with variable pitch and variable helix milling is proposed. Because the delay between each flute varies along the axial depth of the tool in milling, the cutting tool is discrete into some axial layers to simplify calculation. A comparison of the predicted and observed performance of variable pitch and variable helix against uniform pitch and uniform helix milling is presented. It is shown that variable pitch and variable helix milling can obtain larger stable cutting area than uniform pitch and uniform helix milling. Thus, it is concluded that variable pitch and variable helix milling are an effective way for suppressing chatter.
ISSN:1070-9622
1875-9203
DOI:10.1155/2015/419172