verify that the beam path is within the crosshairs. It is not important if the burn is not
centered in the crosshair as you are only using this as a location reference at this time. If
the beam starts to move from the reference location found in the near field it would be
necessary to make adjustments to the mirror block assembly. Continue this process until
you have reached the home position or the far field. Move the gantry back to the near
field, mark another card. This will be the new near field reference. Make longer moves
towards the far field making mirror block assembly adjustments as necessary. Continue
this process until you are making only one move from the near field to the far field and
the beam location in the crosshair is the same at both locations. It may take several times
of moving from the near to far field before they become the same. Once the location is
the same, the beam is now parallel to the direction of travel, the x-axis. Move the gantry
to the far field (home position) and use BB2 mirror block assembly adjustment to steer
the beam into the center of the crosshair. Move back to the near field mark a card and
then to the far field and mark another. Using BB1 mirror block assembly adjustment
screws make the marks the same again. Repeat the steps of using BB1 to make the marks
the same and then use BB2 to bring it to center. Once the beam path is aligned parallel to
the x-axis the next step can be taken. Take the time to get this as accurate as possible. A
small error at this point will be magnified when you reach the focus lens. Once finished,
tighten the mirror block assembly mounting screws and then loosen ½ turn and then
recheck near and far field. Remove the crosshair and go to the next step.
STEP 9: Install mirror block assembly on BB3
Install the mirror block assembly on BB3 using the three mounting screws. Tighten the
screws then loosen one full turn to allow for adjustment during this procedure. Insert the
crosshair in BB4 at the input side of the beam bender. Hold the card near the output side
of the crosshair and mark the card and make adjustments to BB3 as necessary to bring the
laser beam into the center of the crosshair. Once complete, tighten the mounting screws
on BB3 and loosen ½ turn and recheck alignment. Remove the crosshair and go to the
next step.
STEP 10: Install mirror block assembly on BB4
Install the mirror block assembly on BB4 using the three mounting screws. Tighten the
screws then loosen one full turn to allow for adjustment during this procedure. Insert the
crosshair in BB5 at the input side of the beam bender. Move the y carriage to the park
position (near field). Hold the card near the output side of the crosshair and mark the
card and note the location of the mark in reference to the crosshair. Move the y carriage
12 inches towards the home position and mark a card. It may be necessary to make
adjustments to BB4 to keep the mark in the same reference spot as the first. It is not
important at this time to be centered in the crosshair just the same location. Continue to
make 12 inch moves checking the location of the beam at each step. Once you have
reached the home side (far field) and have adjusted the mark location start back at the
near field and start the process again but this time make 24 inch moves checking the mark
at each stop. Now move back to the near field and mark a card then move to the far field
and make a mark. Only minimal changes to the BB4 should be needed at this point to
make the two marks the same. Move between the near and far fields until the marks are
the same. If the mark is in the center of the crosshair, tighten the mounting screws on
