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15-06-2016 #1
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Ok then if you have not bought the motors either then try and find 8 wire so they can be connected in parallel and get the lowest inductance motors you can find these are proved and tested by many over here :- http://cnc4you.co.uk/resources/Stepp...1B%203.1Nm.pdf.
Good luck with the build...Clive
The more you know, The better you know, How little you know
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15-06-2016 #3
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15-06-2016 #4
You can run both X axis screws with one motor and belt connecting them,it's common practice with the guys on the forum.
Good luck
Mike
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15-06-2016 #5
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15-06-2016 #6
You can get custom belts but they are more expensive, but you have a lot of leeway length wise as you will have adjustment on the motor and your tension/routing belt layout. there was a post on the forum a while ago showing a belt routing setup to address this issue.
Regards
Mike
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15-06-2016 #7
Ok. Z AXIS design time. What is the acceptable leverage ratio of a sturdy Z?
My length of linear rail is 450mm. I was hoping for 300mm
Of cutting depth but it seems like there would be excessive difficulty keeping my Z cutting straight with a 150mm (1/3 ratio) binding area for the spindle on a 450mm run. What do you all suggest?
Also, would be wiser to mount the linesr bearings on the spindle plate or on the gantry plate?
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18-06-2016 #8
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29-06-2016 #9
Few more updates. a redesign of the Z axis and some major work to keep it all straight. moves very smoothly now. Z axis is 6mm steel. working on the ball screws next.
Here's a quick vid of the movement: https://youtu.be/DRLe3EPQ01M
Here's some photos.
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