Use the BRS tool to select bearing reference surfaces.
The bearing is the last point of contact in the extrusion die where the
workpiece takes the final desired shape. The bearing region is a critical
part of the extrusion die, as it controls the metal flow through the die.
The objective of the bearing is to have all parts of the profile emerge
from the die at the uniform speed with minimal deflection at the exit.
To achieve the uniform exit speed with minimal deflection, the bearing
region can be modeled as three segments called choke, straight bearing
and relief as shown.
For complex models, meshing the bearing with choke and relief is a tedious process,
and most of the time auto-mesh will fail to mesh it. As an alternative, HyperXtrude
solver has an option to handle the choke and relief using the bearing reference
surfaces on the die geometry.
The bearing reference surfaces are the surfaces on the tool geometry which represent
the bearing region.
Solution methodology:
Extract the bearing reference surfaces from the die geometry.
Mesh the bearing solid using drag mesh with no choke/relief.
Use the 2D mesh of the reference surfaces to determine the choke angle and
estimate the friction.
Creating Bearing Reference Surfaces
Use the BRS tool to select bearing reference surfaces.
Click the Extrusion ribbon.
Click the BRS tool.
Inspire Extrude will automatically detect all of the bearing
reference surfaces on the tool geometry.
Automatically detected surfaces are shown in red.
Press Ctrl and click surfaces on the model to add or
remove surfaces by toggling between selected and unselected.
Press Ctrl and drag to draw a box and unselect a group
of surfaces even if they are hidden behind other layers.
To unselect a single surface behind another surface, select that front
surface and press H to hide it first.
Note: Pressing H toggles the last selected
surface between hidden and shown. Pressing S will
show all of the hidden surfaces.
Right-click and mouse through the check mark to exit, or double-right-click.
