CAD CAM EDM DRO - Yahoo Group Archive

Re: Newbie would like some help building please

Posted by rainnea
on 2002-08-08 22:11:53 UTC
Carl,

I've always been interested in the hexapod style design and have six
ballscrews 'spare' if I ever have the time to experiment.
Would you mind sharing some details of your hexapod design ?
Do you have any photos ?

Regards,

Rab

--- In CAD_CAM_EDM_DRO@y..., "Carl Mikkelsen, Oasis"
<Carl.Mikkelsen@o...> wrote:
> Mike,
>
> I've built a hexapod with a Porter Cable trim router as the head.
It was
> designed to cut (with sign-like Z-axis of ~2") over a range of
48"x36", but
> in reality only does about 40"x30". When I want 18" of z-axis plus
roll
> and pitch, the x-y range is more limited.
>
> It is not fast. With the motors and drivers, I can only count on
about
> 1/2"/sec.
>
> But, I learned a great deal about 6-axis control and 5-axis
> milling. Although I'm building a faster/stronger machine, this has
not in
> any sense been a waste.
>
> My cost for everything (steel, screws, base, motors, motor drivers,
power
> supply, pendant), not counting some experiments, is about $400.00.
I had
> the computer, and a good background in electronics and programming.
>
> This doesn't count the tools I bought :) [drill press, welder,
taps,
> clamps, ...]
>
> How much of the work do you want to do yourself, and how much do
you want
> to buy?
>
> For my next machine, I'm using ballscrews, and will spend as much
on the
> screws as I spent on the entire previous machine. I'm also going
to a more
> powerful spindle, so that I can cut aluminum at higher speed.
>
> The advantage of a hexapod (in my view) is that you don't have the
long
> ways that must be straight and true. Mechanical errors are
calibrated out
> of the system in software.
>
> As for tool life, I find that carbide bits last for a long time in
> wood. HSS bits don't last long at all.
>
> -- Carl

Discussion Thread

knightrid17356 2002-08-08 08:06:02 UTC Newbie would like some help building please turbulatordude 2002-08-08 11:30:08 UTC Re: Newbie would like some help building please Carl Mikkelsen, Oasis 2002-08-08 14:03:37 UTC Re: [CAD_CAM_EDM_DRO] Newbie would like some help building please dodge1320 2002-08-08 14:23:08 UTC Re: Newbie would like some help building please rainnea 2002-08-08 22:11:53 UTC Re: Newbie would like some help building please jim_clamp_it 2002-08-09 13:33:02 UTC Re: Newbie would like some help building please knightrid17356 2002-08-10 11:32:11 UTC Re: Newbie would like some help building please wanliker@a... 2002-08-10 15:55:33 UTC Re: [CAD_CAM_EDM_DRO] Re: Newbie would like some help building please Mel Williams 2002-08-12 08:38:32 UTC RE: [CAD_CAM_EDM_DRO] Re: Newbie would like some help building please