Corso Europa Unita, 6 24030 Valbrembo (BG)
ph. +39 035 339 112 fax +39 035 4378007 - P.IVA 02053210163
Sphera2 Plus
Presentation
Today
SPHERA2 PLUS represents the
ideal solution for lenses and masks cutting made of plastic material, for anyone needing an
excellent degree of finishing combined with high productivity, low maintenance costs, ease of use
and reliability.
These appreciated prerogatives make
SPHERA2 PLUS the
indispensable machine for any companies involved in the manufacture of both frames and
lenses, if they want to keep up with competition in the optical branch.
Thanks to our long-lasting experience in the optical branch and, in general, in the
automation field, during the design and development stage of the machine we have carefully analysed
the market requirements and particularly those of the major producers.
The result is a lens cutting system that is today adopted by the major producers of
spectacles in Italy and throughout the world to their full satisfaction.
Essential features
The
SPHERA2 PLUS work centre is best suited to cut and shape sun lenses, masks, and demo lenses
with holes and grooves of any kind, and finish the edge both by bevelling and rounding, with
a nylor groove or also rimless.
The
SPHERA2 PLUS processes all types of lens in plastic material: CR39, Poly, Apx, etc.
It can machine spherical lenses with basis from 4 to 16, both decentralized and not, as well
as cylindrical, toric and double-surface toric lenses, masks with basis from 4 to 7.
The
SPHERA2 PLUS work centre machines 2 lenses at the same time per cycle , which can be lenses
of different shapes, of different curves and of different materials and have different edge finish.
SPHERA2 PLUS operates in full-automatic mode by picking up the rough lenses from two
self-levelling loaders and unloading the finished lenses onto a collecting conveyor belt.
SPHERA2 PLUS features the lowest possible cycle times for its category, an extraordinary
cutting quality with all materials and extremely moderate operating costs.
The
SPHERA2 PLUS work centre is equipped with a powerful and intuitive Cad/Cam software for the
programming and, when fitted with a series of useful accessories, it immediately gets into the
claims of large and small companies in the optical branch.
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Technical data
Type of processable lenses: cylindrical, spherical, toric 4/20
Rough lens dimensions: from 60mm Ø to 90mm Ø, tile lenses
Maximum dim. of finished lens: up to 90 mm Ø
Minimum dim. of finished lens:
- with standard equipment: 26 mm
- with special equipment:
21 mm
Processable standard lens base: from base 4 to base 12
Special lens base: until base 16
Drilling inclination: radial
Capability of processing: drilling and milling of holes and grooves, special finishes
Mask cutting: Form base 4 to base 7 spheric and toric
Max Mask in rotation space: 180 mm diameter
Lens locking system: by interchangeable lens-retainer and base
Mask locking system: by vacuum system
Approximated productivity:
V-bevel 200 pair/hour
Rimless lens with 2 holes + 2 slots 150 pair/hour
Mask base 6-7 no holes 140 pair/hour
Mask base 6-7 3 holes 120 pair/hour
Lens/masks loading: automatic through standard loaders
Lens/masks unloading: automatic onto a conveyor
Lenses’ material: any plastic material (CR, polycarbonate...)
Electrospindle speed: 6000 - 28.000 rpm variable depending on program
Electrical switchboard: according to CE standards, air-conditioned
All the components: according to CE standards
Instruction books: according to CE standards
security certificate: Signed CE factory certificate
External supplies required by the machine
Power supply: 400V - 3 phases - 5 kW - 7,22 A
(see "Accessories" for non-european electrical connections)
Air supply: 6 bars, minimum capacity 1300 l/min
Chip suction: Pipe 200 mm Diameter - 2500 m3/hour, 25 m/sec
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Loading systems selection
2.1) automatic stack loader:
allow the machine to work in automatic mode; the blanks are stored in a couple of vertical
adjustable stores; it is composed by a vertical elevator, a couple of masks adjustable stores and a
couple of adjustable lens stores.
Each loader is adjustable in X and Y direction and when the stores are empty the machine
prepare itself to release them to be filled; during the vertical stores filling the machine remains
stopped, but extra stores are available like accessory.
2.2) automatic chain loader:
allow the machine to work in automatic mode; the blanks are loaded in small stack of
1-10 pieces (depending of the blank attitude to be placed in a stack). The chain loader has a
loading area outside the machine, then it’s possible to load it without stop the machine;
the chain loader could be adjusted for polycarbonate lens (positive pin), Cr39 lens(negative
pin) and masks with different curvature and size. On the loading arm there is a device that allow
to adjust the blank loading position, in order to get correct optical axes on decentred
lenses.
On request accessories
3.1) End mill preset:
it measures the length of the end mills and facilitates the machining set up. It is
indispensable to cancel the idle times for replacing the end mills during the production.
3.2) Additional lens vertical stores:
it’s composed by a couple of extra adjustable vertical store for lenses. It’s suitable only
for the vertical loading system item 2.1.
3.3) Additional masks vertical stores:
it’s composed by a couple of extra adjustable vertical store for lenses. It’s suitable only
for the vertical loading system item 2.1.
3.4) Manual drawer:
it’s prepared for the manual loading of the kind of blanks that are not loadable with the
loading system 2.1 or 2.2. It’s composed by a drawer manually moved back and forward where is
possible to fix any kind of special blank centring devices.
3.5) Tool changer:
it allow automatic tool change during the cycle; it’s composed by a couple of independent
tool changing groups, with three places each, that moves with pneumatic actuators. Each station is
equipped with such kind of device.
Non-european electrical connections
208V - 3 phases - 5 kW - 13,88 A
480V - 3 phases - 5 kW - 6.01 A
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