Maximum weight supported of spindle

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Elie
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Maximum weight supported of spindle

Post by Elie » Fri Dec 20, 2013 4:09 am

What is the maximum weight supported rotary tool (spindle) on shapeoko 2 ? (Axe Z)

WillAdams
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Re: Maximum weight supported of spindle

Post by WillAdams » Fri Dec 20, 2013 10:56 am

There's a list of what's been documented thus far here:
http://www.shapeoko.com/wiki/index.php/Spindle_Options

Heaviest on a typical double X-axis machine has been the Dewalt DWP-611@ 4.1 lbs.

We also have a table of load-bearing here:
http://www.shapeoko.com/wiki/index.php/ ... cteristics

which I read as that being w/in a reasonable and safe range (for a typical double X-axis machine), but I'm not sure how much higher one could go w/ safety and w/o depth going dish-shaped w/o seriously expensive improvements.
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cvoinescu
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Re: Maximum weight supported of spindle

Post by cvoinescu » Fri Dec 20, 2013 11:51 am

Bart Dring said, and it was repeated here, that the maximum load per V-wheel was 6 lbs (2.7 kg) in any direction. Bear in mind that leverage can amplify off-axis forces: a 2 kg spindle 60 mm away from a single X rail would impart a lateral force of 1.5 kgf on each of the four X V-wheels; in addition, the top wheels will have to bear the weight of the spindle, Z axis, X carriage and two motors (say 3.4 kg total, or 1.7 kgf each); the resultant force is very close to 2.7 kgf, even taking into account the fact that the X motor balances a little of the weight of the spindle. Then you have cutting forces on top of that, which have an even larger mechanical advantage over the X V-wheels than the spindle itself.

On the other hand, V-wheels are cheap and easily available, so if they break, you can replace them.
Proud owner of ShapeOko #709, eShapeOko #0, and of store.amberspyglass.co.uk

Elie
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Joined: Tue Nov 26, 2013 1:24 am

Re: Maximum weight supported of spindle

Post by Elie » Fri Dec 20, 2013 3:17 pm

thank you for your explanation and the link.

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