Overall Machine Stiffness Estimates Between The Standard and Modified MiniMill™
The Modified MiniMill™ has an estimated Machine Stiffness of:
5 N/micron (27,000 lbf/inch)
The Standard MiniMill™ has an estimated Machine Stiffness of:
10 N/micron (57,000 lbf/inch)
This can be doubled by upgrading from short trucks (0.02 C Preload)
to Standard Trucks (0.08 C Preload)
The machine stiffness was estimated from the deflection due to the rolling of Y Carriage and Deflection of the Z Axis.
See the Modified MiniMill™ Stiffness Presentation for the calculation of the its stiffness values