Programming instructions

2 • 20
Structure
Inventor’s Guide
276-2178-E-0610
Fasteners
The most common
problem with robots that
fall apart or lose pieces
easily is that groups
of parts are not joined
securely enough and
separate from each other
and move around.
EXAMPLE 1:
Arm Extension
A robot needs to be able
to reach a goal that is
high off the ground. The
goal is so high that a
single long piece will not
reach it. Two pieces must
be joined together to
reach the desired height.
This attachment uses a
single screw to join the
two bars. As you can see,
it has a problem when
weight is applied to it:
the extension bar rotates
around the screw. Also, if
this screw were to come
loose or fall out for any
reason, the entire arm
would come crashing
down.
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Concepts to Understand, continued
Robust Fabrication
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