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Replacing the Y-Axis Scale Servicing In structions HS-50 01/99 Issue 24 3.4 Fitting t he y axis scale à M o v et h et w og a n t r i e st ot h er i g h t . à L eave t he s cale in it s tran spa rent p ackaging f ilm and …
Servicing Instructions HS-50 Replacing theY-Axis Scale
01/99 Issue
23
à Push the two gantries to the right so that you can detach the rest of the scale.
CAUTION 3
When working near the sleeve (item 3 in Fig. 3 - 2), use the firmer chisel carefully so as not
to damage the sleeve. 3
à Remove the scale.
CAUTION 3
Be careful not to catch or twist the scale when you remove it. 3
à Use the firmer chisel to remove glue residues from the contact surface.
à Remove any remaining glue residues with the multiflex pad.
à Clean the contact surface using a lint-free cloth impregnated with ethyl alcohol.
ATTENTION 3
The contact surface has to be totally free of glue residues. 3
3
3
Replacing the Y-Axis Scale Servicing Instructions HS-50
01/99 Issue
24
3.4 Fitting the y axis scale
à Movethetwogantriestotheright.
à Leave the scale in its transparent packaging film and insert so that the hole in the scale is on
the left.
à Pull the transparent packaging film back slightly.
à Pull away approximately 5 cm of the film covering the adhesive strip on the back of the scale.
à Attach the scale so that the sleeve (item 3 in Fig. 3 - 2) slides into the hole in the scale.
à Place one of the two guides immediately to the right of the sleeve onthe guide rail of the y axis
recirculating ball screw unit (item 4 in Fig. 3 - 2) and fix in place with the screw.
à Move the two main gantries approximately 10 - 20 cm to the left.
à Pull away all the transparent film.
à Attach the second guide on the right-hand side of the guide rail of the y axis recirculating ball
screw unit and then fix the scale in the correct position.
CAUTION 3
Make sure that the scale is not twisted. 3
à Push the two main gantries as far as possible to the right.
à Remove the long pin from the pasting device.
à Insert the pasting device into the guide rail of the y axis recirculating ball screw unit (item 4 in
Fig. 3 - 2) on the left-hand side.
à Insert the long pin into the pasting device so that the scale runs between the two guide pins of
the pasting device and the long pin.
à Place the protective film of the adhesive tape of the tape measure around the long pin, pull to
the right and tighten with your right hand.
à With your left hand, press against the roller of the pasting device.
à Hold the protective film with your right hand and pull to the right in order to move the pasting
device to the right.
à Remove the long pin from the pasting device.
à Lift the pasting device from the guide rail of the y axis recirculating ball screw unit.
à Move the two main gantries all the way to the left.
à Return the pasting device to the position from which you removed it.
à Insert the long pin into the pasting device so that the scale runs between the two guide pins of
the pasting device and the long pin.
Servicing Instructions HS-50 Replacing theY-Axis Scale
01/99 Issue
25
à Place the protective film of the adhesive tape of the tape measure around the long pin, pull to
the right and tighten with your right hand.
à Hold the protective film with your right hand and pull to the right in order to move the pasting
device to the right.
à Remove the right-hand guide and the rest of the film.
à Push the pasting device across to the right-hand stop.
à Remove the pasting device.
à Press down the rest of the scale with your hand using the reinforced cloths.
à Clean the scale with a cloth impregnated with ethyl alcohol.
à Clean the scanning surfaces of both y axis incremental encoders using a cloth impregnated
with ethyl alcohol.
à Loosely tighten the two M3 x 10 hexagon socket-head screws (item 2 in Fig. 3 - 1) on each of
the y axis incremental encoders (item 3 in Fig. 3 - 1) to fix them to the main gantry .
à Use the feeler gauge to set the gap between the y axis incremental encoders and the scale.
Then tighten the fixing screws.
3.5 Settings
à Check the track signals of both incremental encoders.