scholarly journals A novel experimental-numerical approach to modeling machine tool dynamics for chatter stability prediction

2016 ◽  
Vol 10 (2) ◽  
pp. JAMDSM0019-JAMDSM0019 ◽  
Author(s):  
Niccolò GROSSI ◽  
Antonio SCIPPA ◽  
Filippo MONTEVECCHI ◽  
Gianni CAMPATELLI
Keyword(s):  
Machine Tool ◽  
Numerical Approach ◽  
Stability Prediction ◽  
Chatter Stability ◽  
Machine Tool Dynamics ◽  
Tool Dynamics ◽  
Chatter Stability Prediction

Mechanics and Dynamics of Multifunctional Tools

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Min Wan ◽  
Zekai Murat Kilic ◽  
Yusuf Altintas
Keyword(s):  
Time Domain ◽  
Prediction Models ◽  
Chip Thickness ◽  
Combined Processes ◽  
Multiple Delays ◽  
Stability Prediction ◽  
Chatter Stability ◽  
Regenerative Effect ◽  
Hole Making ◽  
Chatter Stability Prediction

The mechanics and dynamics of the combined processes are presented for multifunctional tools, which can drill, bore, and chamfer holes in one operation. The oblique cutting forces on each cutting edge with varying geometry are modeled first, followed by their transformations to tangential, radial, and axial directions of the cutter. The regenerative effect of lateral and torsional/axial vibrations is considered in predicting the dynamic chip thickness with multiple delays due to distribution of cutting edges on the cutter body. The lateral and torsional/axial chatter stability of the complete hole making operation is predicted in semidiscrete time domain. The proposed static cutting force and chatter stability prediction models are experimentally proven for two different multifunctional tools in drilling Aluminum Al7050 and Steel AISI1045.

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