Molecular dynamics simulation of subnanometric tool-workpiece contact on a force sensor-integrated fast tool servo for ultra-precision microcutting

2016 ◽  
Vol 369 ◽  
pp. 354-365 ◽  
Author(s):  
Yindi Cai ◽  
Yuan-Liu Chen ◽  
Yuki Shimizu ◽  
So Ito ◽  
Wei Gao ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Force Sensor ◽  
Dynamics Simulation ◽  
Fast Tool Servo ◽  
Ultra Precision

Molecular dynamics simulation of elastic–plastic deformation associated with tool–workpiece contact in force sensor–integrated fast tool servo

2016 ◽  
Vol 232 (11) ◽  
pp. 1893-1902 ◽  
Author(s):  
Yindi Cai ◽  
Yuan-Liu Chen ◽  
Yuki Shimizu ◽  
So Ito ◽  
Wei Gao
Keyword(s):  
Molecular Dynamics ◽  
Machine Surface ◽  
Single Point ◽  
Force Sensor ◽  
Dynamics Simulation ◽  
Surface Form ◽  
Fast Tool Servo ◽  
Dynamics Model ◽  
Elastic Plastic ◽  
Diamond Cutting Tool

The tool–workpiece interactions when a single-point diamond cutting tool with specific tool edge geometry is made to contact with a copper workpiece are evaluated by the molecular dynamics simulations under different temperatures, boundary conditions and model sizes for ultra-precision microcutting and in-process surface form measurement based on a force sensor–integrated fast tool servo. It is confirmed that the proposed multi-relaxation time method is effective to stabilize the workpiece molecular dynamics model over a wide temperature range up to the room temperature under which a practical microcutting and on-machine surface form metrology process are conducted. The boundary condition and model size of the molecular dynamics model are then optimized to make reliable and cost-effective simulations for evaluation of the elastic–plastic transition contact depth and the corresponding contact force when a diamond tool with a practical edge sharpness of up to 30 nm is employed for microcutting and on-machine surface form metrology.

scholarly journals Molecular dynamics simulation of self-rotation effects on ultra-precision polishing of single-crystal copper

AIP Advances ◽  
2013 ◽  
Vol 3 (10) ◽  
pp. 102106 ◽  
Author(s):  
Yihan Yang ◽  
Hongwei Zhao ◽  
Lin Zhang ◽  
Mingkun Shao ◽  
Hongda Liu ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Single Crystal ◽  
Dynamics Simulation ◽  
Single Crystal Copper ◽  
Ultra Precision
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