Surface Roughness - Calculates feedrate for surface roughness on turning
This is a macro plugin for GibbsCAM that will calculate feedrate to achieve a theoretical surface roughness with a given tooltip radius.
It will calculate and convert between Ra µmeters, Ra µinches, RMS and ISO N roughness grades (ISO 1302).
The 'Get From Op' button will read information from a selected turn roughing or contour operation (tooltip radius and feedrate) and calculate the surface roughness.
ToolTip Radius are the dominant input, change Target Ra and it will calculate new feedrate with the current tooltip radius.
Change feedrate and it will calculate new surface roughness with the current set tooltip radius.
Change ToolTip Radius and it will calculate new feedrate for the current set Target Ra.
For milling with a ball mill, set ToolTip Radius for the mill and the calculated feedrate are the required stepover distance to get the required surface roughness.
Two tabs provides calculations in metric and inches independently.