Process damping model approach in milling operations

2021 ◽  
Vol 43 (11) ◽  
Author(s):  
Sezan Orak ◽  
Erol Turkes ◽  
Selcuk Selvi ◽  
Sencer S. Karabeyoglu
Keyword(s):  
Process Damping ◽  
Milling Operations ◽  
Damping Model ◽  
Model Approach

A coupled dynamics, multiple degree of freedom process damping model, Part 1: Turning

2016 ◽  
Vol 46 ◽  
pp. 65-72 ◽  
Author(s):  
Christopher T. Tyler ◽  
John R. Troutman ◽  
Tony L. Schmitz
Keyword(s):  
Degree Of Freedom ◽  
Coupled Dynamics ◽  
Process Damping ◽  
Damping Model

A unified process damping model considering the varying stiffness of the milling system

2019 ◽  
Vol 147 ◽  
pp. 103470 ◽  
Author(s):  
Jia Feng ◽  
Min Wan ◽  
Zi-Yu Dong ◽  
Wei-Hong Zhang
Keyword(s):  
Process Damping ◽  
Unified Process ◽  
Damping Model

A coupled dynamics, multiple degree of freedom process damping model, Part 2: Milling

2016 ◽  
Vol 46 ◽  
pp. 73-80 ◽  
Author(s):  
Christopher T. Tyler ◽  
John R. Troutman ◽  
Tony L. Schmitz
Keyword(s):  
Degree Of Freedom ◽  
Coupled Dynamics ◽  
Process Damping ◽  
Damping Model

scholarly journals Decomposition of process damping ratios and verification of process damping model for chatter vibration

Measurement ◽  
2012 ◽  
Vol 45 (6) ◽  
pp. 1380-1386 ◽  
Author(s):  
Erol Turkes ◽  
Sezan Orak ◽  
Suleyman Neseli ◽  
Suleyman Yaldiz
Keyword(s):  
Chatter Vibration ◽  
Process Damping ◽  
Damping Model

Chatter Stability in Micro Milling Processes Considering Ploughing and Process Damping Effects

2009 ◽  
Author(s):  
Ramin Rahnama ◽  
Mozhdeh Sajjadi ◽  
Simon S. Park
Keyword(s):  
Time Domain ◽  
Chip Thickness ◽  
Experimental Tests ◽  
Micro Milling ◽  
Chatter Stability ◽  
Workpiece Material ◽  
Process Damping ◽  
Milling Operations ◽  
Milling Operation ◽  
Cutting Mechanisms

Micro milling operations utilize miniature tools to remove workpiece material, in order to create the desired 3D miniature components. One of the challenges in a micro milling operation is the unstable phenomenon called regenerative chatter. The occurrence of chatter in the micro domain, as in macro machining, is detrimental to part finishes and significantly reduces the longevity of tools. There are two different cutting mechanisms in micro milling operations, which are determined by the critical chip thickness. When the chip thickness is less than the critical chip thickness, no chip forms and ploughing occurs; whereas, when the chip thickness is greater than the critical chip thickness, a chip forms and shearing cutting happens. During each rotation of the tool, the cutting mechanisms switch from ploughing to shearing and vice versa. This paper introduces a time domain chatter model to investigate the effects of the ploughing and shearing mechanisms on stability. The model also considers the effects of process damping in micro milling, especially at low spindle speeds. Several experimental tests have been performed to validate the model.

A new process damping model for chatter vibration

Measurement ◽  
2011 ◽  
Vol 44 (8) ◽  
pp. 1342-1348 ◽  
Author(s):  
Erol Turkes ◽  
Sezan Orak ◽  
Suleyman Neseli ◽  
Suleyman Yaldiz
Keyword(s):  
Chatter Vibration ◽  
Process Damping ◽  
New Process ◽  
Damping Model

Effects of Ion Beam Milling on Surface Topography

1973 ◽  
Vol 31 ◽  
pp. 84-85
Author(s):  
P.G. Pawar ◽  
P. Duhamel ◽  
G.W. Monk
Keyword(s):  
Surface Topography ◽  
Ion Beam ◽  
Solid Material ◽  
Beam Current ◽  
Atomic Mass ◽  
Micro Milling ◽  
Ion Milling ◽  
Controlled Atmospheres ◽  
Milling Operations ◽  
Sufficient Energy

A beam of ions of mass greater than a few atomic mass units and with sufficient energy can remove atoms from the surface of a solid material at a useful rate. A system used to achieve this purpose under controlled atmospheres is called an ion miliing machine. An ion milling apparatus presently available as IMMI-III with a IMMIAC was used in this investigation. Unless otherwise stated, all the micro milling operations were done with Ar+ at 6kv using a beam current of 100 μA for each of the two guns, with a specimen tilt of 15° from the horizontal plane.It is fairly well established that ion bombardment of the surface of homogeneous materials can produce surface topography which resembles geological erosional features.

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