Page 259 - CNC Robotics

Chapter 11 I Tool Holders and Testing

Place one of the strain-relief clamps through the top openi ng of
the junction box and one in the bottom opening. Insert them from
the inside of the box with the adjusting screws facing out (see
Figure I1.6l.

Figure 11.6
Installingthe strain-
relief clamps.

You now need a coup le of weak springs to provide tension for the
slide. The tension will allow the slide to come back to a hom e posi-
tion as well as prov ide a littl e pressure for the pen as it travels over
the wo rk area (see Figure 11.7).

The main objective of the springs is to maintain consistent posi-
tioning for trave l. If the springs aren't used, the slide may not
come back to its original posi tion or it will not drop down to make
contact with the pape r on the work area. WARNING: Don 't use
strong springs-the pen will not last if too much pressure is
applied while it is plotting. See the weak springs installed in
Figure 11.8.

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