Focus Translation Assembly Service

1   Assembling the Focus Translation Assembly

Front view on focus lead screw assembly. Focus flexures are screwed and dowelled in place.

Reverse view on above sub-assembly. Note vespel lead screw fixed to G10 cross flexure.

View of focus translation base plate with translation flexure attached.

View of unpopulated detector box housing.

Assembly of focus lead screw assembly into detector box housing. Locate on two dowels and secure with four M6 cap screws.

Detector box housing with focus lead screw sub-assembly attached.

Reverse view of the detector box housing.

Fit G10 brace as shown with end cut outs on same side as gear wheel. Secure with four screws.

Fit end plates, location is on dowels on cross brace, attach bottom focus flexure with dowels and secure with steel plates.

On bottom side, place baseplate in position with motor plate to the lead screw side.

Secure base plate to end plate using sixteen soulder screws. Ensure cutouts on flexures clear switch assemblys.

Top view of assembly before fitting top G10 cross bars.

G10 cross bars being fitted secure to endplates with screws each side. Check floating nuts are positioned correctly.

Top view wuith top G10 crossbars in position and top focus flexure in positon and secured.

Translation motor sub-assembly before installation to base plate.

End view showing limit switch mechanisams and actuator.

Translation motor assembly being placed in position on base motor plate

Secure motor assembly to base plate and attach all screws.
Note position of support bracket.

Offer up vespel translation nut to end plate ensuring the flexures are in mid position.
See set-up notes

Attach preload springs as shown, at top and bottom.

Secure wiring in position with p-clips, ensure no cables can be snagged by moving mechanism.

Side view on complete mechanism.

Wiring routes.