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    MEI Racer 4TBA Operations

    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

    #2
    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

    Comment


      #3
      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.

      Comment


        #4
        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.
        Last edited by deepak_94; 09-09-2023, 01:48 AM.

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          #5
          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

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            #6
            As a Bisphera user, I suggest you change the cutting tools more frequently ( better after 8000~10000 cuts ).

            Comment


              #7
              Originally posted by deepak_94 View Post
              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

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