Mesmerizing Tube Bender Looks Like It's Pooping Steel

Bent tubing is key. Roll cages need it. Tube frame chassis
need it. Even the storage arrangement for my welding clamps
needed it. There are a number of ways to go about bending
tubing. Rotary draw benders like the Hossfeld Universal
bender make a tight bend at one point. Three-roll benders
create more gradual curves. But none of them compare to this
automated CNC tube bender that just spits out steel in any
shape you want. I could watch it all day.

Information on this Nissin bender is a bit sparse, but I've
come across these two videos of it's impressive capabilities.
Tube to be bent is supported, lubricated, and driven forward
at a constant speed by the stationary part of the machine. As
the tube is pushed through the machine, it is forced through
the moveable die, which positions itself appropriately to
bend the tube as needed.

The bend is originally specified in terms of the geometry of
the desired part. That bend geometry is translated into a set
of instructions that control the position of the moveable
die. The die will be positioned in the right place at the
right time such that the tube is bent the right amount and in
the right direction to produce a finished piece closely
matching the original specifications.