Edging A Lens - National Optronics Horizon II Instruction Manual

EDGING A LENS:

The edger is shipped with the beveling cutter body installed in the cutter motor. It is
highly recommended that the operator run several test lenses to become familiar with the
Horizon II's operation prior to beginning production.
1. With the clear Plexiglas shield raised, mount the frame pattern on the spring clip
on the left side of the lens drive motor shaft. Nasal facing front makes "R" and
Nasal facing rear makes "L".
2. With the left hand, fit the blocked lens into the chuck adaptor end of the lens
drive motor shaft. While holding the lens in position, press the Chuck button.
Both the pattern and lens clamp will close.
3. Close the Plexiglas shield.
4. Set the desired size. The sizing dial on the left side of the edger reads in
millimeters and the indicator plate above the dial in centimeters. The edger uses
the U.S. convention of 36.5mm as the size-on-size setting for beveled lenses.
5. Set the bevel placement by turning the knob on the right side of the edger either
clockwise or counter clockwise. This controls the position of the Teflon tracking
wheel and its relative position to the cutter. Clockwise rotation will shift the
bevel toward the back of the lens. There is a sight line and guide (Fig. 3) that is
used by the operator to judge the relative position of the bevel placement. It is
located on the inside of the edger and is viewed through the Plexiglas shield.
6. Press the Start button. The edger will automatically edge the lens in 50 seconds.
7. After edging the lens, raise the Plexiglas shield, hold the lens with the left hand,
and disengage the Chuck button with the right hand. Both the lens and pattern
clamp will open and the operator can remove the lens.
NATIONAL
INCORPORATED
OPERATING PROCEDURES
Figure 3: Sight Line and Guide
Tel: 434-295-9126 Tech Support: 800-247-9796 Fax: 888-239-0778
100 Avon Street, P.O. Box 1547
Charlottesville, VA 22902
Revision: 11/98 Page - 12 -