draw slides as linear accelerators/gearboxes!
Posted by
Graham Stabler
on 2006-06-04 10:10:32 UTC
Here is one way to get high speeds for low cost??
The average draw slide consists of three parts, a U-shaped channel, a
ball cage and the part that slides.
Conventionally if you were to use these in CNC you would bolt the U
shaped part down and mount gantry or whatever to the slide part and
attach your lead nut or belt to the part to be moved. However if you
attach the leadnut to the ballcage then you end up with a ~1:2 ratio
between ballcage and slide.
of course it is possible that the slide might slip past the cage under
high load but I'd say that for engraving or PCB etching it would work
fine and took some effort to make slip by hand.
Anyway just a bit of fun and food for thought.
Graham
p.s you could use it the oposite way as a motion reducer for fine
control of a manual machine or positioner.
The average draw slide consists of three parts, a U-shaped channel, a
ball cage and the part that slides.
Conventionally if you were to use these in CNC you would bolt the U
shaped part down and mount gantry or whatever to the slide part and
attach your lead nut or belt to the part to be moved. However if you
attach the leadnut to the ballcage then you end up with a ~1:2 ratio
between ballcage and slide.
of course it is possible that the slide might slip past the cage under
high load but I'd say that for engraving or PCB etching it would work
fine and took some effort to make slip by hand.
Anyway just a bit of fun and food for thought.
Graham
p.s you could use it the oposite way as a motion reducer for fine
control of a manual machine or positioner.