ScopeDome.com
2010 Slupsk - Poland
Placing a dome onto base ring
Base ring
Placing a dome onto base ring
page 5
A
B
C
E
Fig 6 - Cog-rim of rotary drive.
A. Cog-rim
B. Encoder
C. Encoder support
D. Elastic pads (washers)
E. Dome
A
B
C
fig 7
A
.
Last segment
of
cog-rim
B. Cog-rim
C. Dome
D
3 mm
Placing the dome
onto base ring
Rotary drive
cog-rim assembly
1. Lift the dome and put it down onto the rollers of the
base ring.
2. Check if the dome turns round easily; turn it several
times around the axis.
3. After you fit the cog-rim drive, screw on drive shields
to the base ring. Check if the upper rollers of the
shields do not press the driving ring too much. There
should be approximately a 1 mm distance between
roller and the ring.
1. Place the cog-rim according to fig. 6 scheme.
2. Start with longer (1-meter long) elements. Screw
each with the dome using at last four screws. Cog-
rim shall stick out by approx. 3mm over dome's
edge.
3. Do not tighten the screws at the beginning, leave
some margin to allow free movement of cog-rim.
4. After fixing 7 longer segments, the last, short one
shall be squeezed in e.g. pushed in with some force.
Try to bend it forward into dome's interior and then
just push the bulge to border on the dome
(see fig 7).
5. Align and level cog-rim parts, fit joints focusing on
cog geometry.
6. Tighter all screws.
Tip:
Tip:
A properly assembled dome
should turn round by a finger pressure
applied to the front panel of the dome.
When fitting up the encoder, notice if it does not abrade
the cog-rim. It is very easy to destroy it while rotating the
dome.
EN
