Page 221 - CNC Robotics
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CNC Robotics
Figure 9.34
Position of the z-axis
end-ot-trevel limit
switch.
The problem encountered by mounting the sw itch directly to the
side of the I X 3 is that nothing w ill hit the plunger w hen the z-
axis reaches its end. To resolve this challenge. make an extension
fro m a piece of I I S-inch thick by 3/ 4-i nch w ide alumin um . Dri ll a
hole so that one of the bolts hold ing the acme nut ho lder in place
can be used to install it. Cut th e corner on an angl e to give the
extension more surface area that can make contact w ith the
plunger of the li mi t sw itch (see Figure 9.3 5).
Figure 9.35
Extension to activate
limit switch.
212
