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  1. #1
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 11 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has a total post count of 2,970. Received thanks 368 times, giving thanks to others 9 times.
    Compromise.
    Or just make a water table so you don't have to worry about dust :-)
    .
    If you do go for ballscrews, then you are going to have to ensure they're well protected, whereas R&P doesn't have to be. Yes you'll get backlash using R&P, but you need to remember that Plasma is not that accurate a method, so even 0.5mm of play isn't going to have much effect on most items.
    .
    Personally, I'd be designing the table so it sits above the side rails, that way the only thing in the way during loading would be the gantry. You then only have to handle dust from above, instead of spray back/dust coming up the way as well. You will still get some dust coming up the way, but hopefully a lot less.
    .
    Have you had a look at the swift-cut machines for some ideas?
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

  2. #2
    Thanks,
    If i had the cash i would buy that 1250 table tomorrow! It is exactly where i want to be, has the full cut speed range I want, pity the pictures are not clearer ;)

    I see that have R&P drive but use V-Rails all round, Can't seem to find that stuff?

    I like the below-table idea too for the transport, places more stress on the gantry support but obviously works.

    The motors are not much above what i have - they use 4Nm and I have 3.1Nm, both hybrid so thats a good sign.

    Now, can i build that table with Linear rail or does anyone know where I can source the V-rails????

  3. #3
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 11 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has a total post count of 2,970. Received thanks 368 times, giving thanks to others 9 times.
    Google has the answer - http://www.linearonline.co.uk/acatal..._Bearings.html

    (although it did take a few attempts to find it!)
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

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  5. #4
    m_c's Avatar
    Lives in East Lothian, United Kingdom. Last Activity: 11 Hours Ago Forum Superstar, has done so much to help others, they deserve a medal. Has a total post count of 2,970. Received thanks 368 times, giving thanks to others 9 times.
    Oh, and their youtube videos give a little bit more detail if you pause at the correct moment ;)
    Avoiding the rubbish customer service from AluminiumWarehouse since July '13.

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  7. #5
    Thats the stuff, thanks

    Now i have even more options;)

    Trouble is, what way to proceed???

    Vee rails with R&P drive
    Linear rails with R&P
    Linear rails with ballscrews
    Flat plate & skates with R&P
    Other...

  8. Quote Originally Posted by Davek0974 View Post
    Thats the stuff, thanks

    Now i have even more options;)

    Trouble is, what way to proceed???

    Vee rails with R&P drive
    Linear rails with R&P
    Linear rails with ballscrews
    Flat plate & skates with R&P
    Other...
    sorry about this but what are the advantages and disadvantages of these different types??
    Gavin,

    F1 Transportation & Engineering Services
    [email protected]
    We Move, Repair & Fabricate.

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  9. #7
    Vee rails with R&P drive - seems to be pretty common, reasonably easy to build, precision depends on rail mounting, backlash in rack, adjustment of rollers
    Linear rails with R&P - very accurate transport, precision depends on backlash again
    Linear rails with ballscrews - highest precision, highest cost, hardest build
    Flat plate & skates with R&P - a very common method, precision depends on quality of plate used and how its mounted, easy to replace, lowest cost, needs to be kept clean from grit etc

  10. Quote Originally Posted by Davek0974 View Post
    Vee rails with R&P drive - seems to be pretty common, reasonably easy to build, precision depends on rail mounting, backlash in rack, adjustment of rollers
    Linear rails with R&P - very accurate transport, precision depends on backlash again
    Linear rails with ballscrews - highest precision, highest cost, hardest build
    Flat plate & skates with R&P - a very common method, precision depends on quality of plate used and how its mounted, easy to replace, lowest cost, needs to be kept clean from grit etc
    What is backlash?
    And when you say highest cost re ballscrews how much are we talking??
    Gavin,

    F1 Transportation & Engineering Services
    [email protected]
    We Move, Repair & Fabricate.

    Facebook - https://www.facebook.com/f1transport
    LinkedIn - https://www.linkedin.com/pub/f1-tran...ces/61/783/a06

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