Weco Edge 550, Manual

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Utilization... Special cases
Edge 580 - Edge 550
3-91
3.5.5.5 P
RODUCE A MANUAL BEVEL
3.5.5.5.1 P
RINCIPLE
>
You wish to visualize the lens thickness and define the curve and the position of the bevel.
3.5.5.5.2 P
ROCEDURE
To produce a manual bevel :
1. Open the job
2. Enter its characteristics.
3. Proceed as shown on the flow chart on the following page - Flow chart 3-15.
3.5.5.5.3 H
INTS
⇒
When the edging cycle is finished, remove the lens from the edging chamber without removing the block
so as to be able to retouch it if necessary.
⇒
Check the lens dimensions and finishing.
3.5.5.5.4 I
MPORTANT NOTES
> The maximum distance between the apex of the bevel and the front face is 5 mm.
>
The position of the bevel can be modified along four points : top, bottom, temporal, nasal Only the bevel apex
is displaced along a point. The opposite side remains fixed and the curve of the bevel is unchanged.
>
If you wish to reposition the whole bevel, move the bevel apex in one direction to the required position. Then
do the same from the opposite point.
3.5.5.5.5 L
IMITS
> If the maximum thickness of the lens is less than 2 mm, the applied bevel will automatically be of 1/2 - 1/2
type, whichever type of bevel is selected initiallly.
> To make a safety-bevel of any type, the minimum distance between the bevel apex and the front/rear face
must be greater than 1.6 mm. If it is less than 1.6 mm at any point of the lens, the safety-bevel will not be
produced at this point.