The mechanism that we developed for
folding the stainless steel sheets is shown in figure above. The
folding mechanism is operated in the follwing manner:
To acheive the desired triangular cross section for the stainless steel
beams requires three sequential bends to the flat steel sheet.
Although the folding fixture is currently operated by hand, the aim is
to fully automate the process. As such, when the folds are
completed, we want the structure to naturally tend to assume the
triangular cross section so it can then be fed into a triangular
channel and sealed in place. This means that as the third fold is
being completed, we want the edge P3P4 to travel down the clamp and not
up (as was observed in some initial trials).