Essilor Pro-E 600 edger, User Manual

Page: 40 / 198

4. P
ERFORM A
S
TEP BEVEL
A step bevel is strongly recommended for a high-base sports frame or a safety frame.
The step bevel finishing is active and available only if the tool is installed on the “small tools” module
(
F
p.168)
.
For more information, refer to the section Maintenance servicing> Changing edger tools > Installing
the Step ++ wheel
(
F
p.168)
.
This section describes the procedures for the creation of a step bevel:
◦ description of the Step bevel screens
(
F
p.41)
◦ perform a Step bevel in “automatic trajectory” mode
(
F
p.44)
or “front surface tracking” mode.
(
F
p.46)
The use of the step bevel is determined by two parameters: frame and lens.
• Concerning the lens, the main constraint is the thickness of the nasal and temporal edges.
• Concerning the frame, the crucial elements are the bridge and shape of the groove. The hinge is an
additional factor in the case of a metal frame, the arms for a plastic frame.
For this job, the lens base must always match the frame base perfectly. Too great a difference
between the two could be detrimental to the quality of your job.
Cross-section of a step bevel
1: Value of shelf bevel of rear surface
2: Width of the flat side of the bevel
3. Front surface tracking value
Pro-E 600_Pro-E 700 > v1 -10.18
40
U
SER
M
ANUAL
> II. E
DGING A LENS