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Lead Screw?

Discussion in 'General Talk' started by GrayUK, Jul 15, 2014.

  1. GrayUK

    GrayUK Master
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    Hi All.

    Can someone please have a look at the following sight for me, and let me know which screw is equivalent, or better, than the 8mm one we sell here.

    http://www.mooreinternational.co.uk/category-30.html

    I know they are all dearer than our one, but they are literally just down the road from me, and I can pick one up any time. I just didn't want to get the wrong one.
    Can't decide whether I want, or need, a 300mm or 600mm one though. 500mm would have been good.
    Is there a better, finer thread amongst this lot, and would this be more precise?
    It will have to fit in the plates I'm getting from Robert as well.

    Cheers
    Gray
     
  2. Mark Carew

    Mark Carew OpenBuilds Team
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  3. Rick 2.0

    Rick 2.0 OpenBuilds Team
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  4. GrayUK

    GrayUK Master
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  5. GrayUK

    GrayUK Master
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    Can someone get back to me on the above query? I really would like to order the screw from them, along with my Nema 23's, if poss. If none of them will work, then fair enough. Does it matter if left or right?

    Cheers Gray
     
  6. Tweakie

    Tweakie OpenBuilds Team
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    Hi Gray,

    Left or Right hand thread is unimportant as software configuration takes care of motor rotational direction. Given the choice of screws you are considering my preference would be for 10 x 10 (mainly because with direct drive and rapid feed, you will be achieving a motor speed of say 900 RPM and dependant on screw length, an 8mm dia. screw is liable to suffer more 'whip' than a 10mm dia. screw).

    Everything is a compromise my friend. ;)

    Tweakie.
     
  7. GrayUK

    GrayUK Master
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    Absolutely. However, I do need it to fit in the plates I intend to get from Robert, as well as the bearings supplied from the Store. Hence my trying to match the 8mm supplied by the Store. It is for the Z axis only, and therefore I think this is why 8mm is being used.

    What do you reckon? :confused:

    Gray
     
  8. Tweakie

    Tweakie OpenBuilds Team
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    My apologies I had not realised it was just for the Z axis - YES 8mm will be just fine.

    Tweakie.
     
  9. GrayUK

    GrayUK Master
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    Excuse my manners! Good morning Tweakie.

    I've pretty much decided on these Steppers
    http://www.motioncontrolproducts.co.uk/products/2/6/nema_23_60mm_high_torque_stepper_motors/

    With them in mind, and putting diplomacy to one side for a moment, what driver would you recommend for these? Remember, they are to be used in conjunction with the USB controller.


    Cheers Gray

    Oh by the way. My shipment comes in on Monday!!!!!!! (or should I say, boat?)

    "Ahhhh! The chance to build, and then ......... to build."

    Gray Sinclair
     
  10. Tweakie

    Tweakie OpenBuilds Team
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