LATHING

 gf-20-iol
Using GFR-20-IOL icing plate for lathing perfect rounded blanks is no longer a necessity as any collet is avoided. Thinner blank can be used, leading to a material saving with a deep core freezing and easy repositioning for the next step.


Freezing mandrels GFR-20-IOL are interchangeable in order to fit various manufacturing steps. Generally the mandrel used for the first side is flat to fit the blank surface, while mandrels for the second side are machined with a mirror image of the lens profile.


Thanks to an optional external centering device, positioning of lathed disks can be achieved easily.
As the original “dead length” collet is used underneath the freezing device, shifting to a “classical” manufacturing stays simple.

 

Video GFR-20

Lathing Freezing Unit
With Manual Thermal Regulation
GFR-20-IOL for DAC ALM lathe

Requiring only compressed air to function, the apparatus will be simply connected to its own air network (dry air 3.2.2. as per ISO standard, pressure of 7 to 8 bars) Air inlet and outlet will be set from the lower side of the spindle.Note: -20°C on the chuck can be obtain with an air pressure of 6 to 8 bars when below -36°C should be obtain at 9 bars. Air consumption will be around 100 to 135 litters per minutes.

Regulation of temperature is set manually.

pic_grf-20-iol_dac-alm

Lathing Freezing Unit
GFR-20-IOL for DAC Series III Lathe
GFR-20-IOL for OPTOFORM 40 Lathe

Requiring only compressed air to function, the apparatus will be simply connected to its own air network (dry air 3.2.2. as per ISO standard, pressure of 6 to 9 bars) Air inlet and outlet will be set from the back side of the spindle.

Note: -20°C on the chuck can be obtain with an air pressure of 6 to 8 bars when below -36°C should be obtain at 9 bars. Air consumption will be around 100 to 135 litters per minutes

Lathing Freezing Chucks ALM

Each AMCC chuck has a serial number.

Exemple of reference :

GFR-M-20-IOL-qB-SAH-B

qB : tail-keeping for DAC-ALM (12.7)
SAH : anti-clockwise rotation
B : new version > -12°C

 GFR-M-20-IOL-qB-SAH-B

Turbo Freezing for Lathe

GFT- L

A cold air blast (- 12°C & 7 bars) to be set below the diamond tool, which make it possible to cool the surface to be machined and drive out the chips towards the vacuum system.

 GFT-L