MEI Racer 4TBA Operations

[deepak_94]

Hi all,

I am working in a edging lab which is having MEI Racer 4 TBA and Bi-sphera Machine.

I need some help as I am facing Sizing and slippage issue in lens.

If anyone here is having any exposure to these machine, I would be thankful to discuss these issue and get some insights.

Please feel free to reach out.

Thanks

[Mauro.Airoldi]

I think I understand that your problem is the AR treated lenses that "move" when the tool enters for cutting.
There can be many reasons:
1 AR with a final layer that was too slippery - in some cases we had to modify the structure of the AR to be able to make the cuts
2 The vacuum that the lens holds is not enough
3 the rubber that holds the lens is damaged (MEI has different types depending on the type of lens you mainly use)
4 the pressure exerted between the CX and CC rubbers is not enough (or too much) you can adjust the value in the program


let us know

[Lensman11]

Consider changing your process. Hardcoat edge then AR. You will save lots of money by making this change. If you spoil a lens in edging you avoid the cost of AR and you will get more lenses in the chamber if they are edged.

[deepak_94]

Hey, Thanks for the input Mauro.Airoldi.

Can you Please provide some input on these point:

Regarding point No.2, is there any way to check in real time in machine to check the Vacuum/Pressure.
Point 3, I have check and clean frequently the rubber on to which the lens is clamped, I don't think there is problem with the rubber.
point 4, Where is the pressure value setting in machine ? how to check value and change it.

looking forward for your response.

[deepak_94]

Oh Wish I could do that, Changing the process might be a little since we are doing mass production, So have to find a way around in current process only

[ALLENSIUKK]

As a Bisphera user, I suggest you change the cutting tools more frequently ( better after 8000~10000 cuts ).

[Mauro.Airoldi]

Hey, Thanks for the input Mauro.Airoldi.

Can you Please provide some input on these point:

Regarding point No.2, is there any way to check in real time in machine to check the Vacuum/Pressure.
Point 3, I have check and clean frequently the rubber on to which the lens is clamped, I don't think there is problem with the rubber.
point 4, Where is the pressure value setting in machine ? how to check value and change it.

looking forward for your response.

point 2 you have to check with MEI assistance, I remember that you could read a value somewhere.
point 3 must still be replaced and there are at least 3/4 different types
point 4 you also have to check with MEI, in our system different pressures (decided by tables) are used depending on the slipperiness of the AR and the material of the lens