Page 172 - CNC Robotics

Chapter 7 / The Gantry and X-axis

Starting in the middle, install and adjust th e remaining bolts alter-
nating from the center. Keep checking w ith a straight edge to
ensure that the rail is straight (see Figure 7.16).

Figure 7.16
Checking rail with
straight edge.

I

If the rail isn't straight, you w ill need to raise or lower a support
bolt to straighten it out. Take your time performing this procedu re.
Follow the same sequence to install the guide rail on the parallel
beam, makin g sure you use the heigh t measurement obtained
from the first bolt in stalled on the previou s rail. If th is is done cor-
rectl y, the rail s should be parallel and at the same heigh t above the
beam, while bei ng straight w ithout any deflection (see Figure
7 . 17).

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