Am 22.07.2010 18:26, schrieb Steve Robertson:
>
>> Hi,
>>
>> i just want to show my first mill experience with my selfmade CNC and
>> EMC. :)
>
> Very nice. Can you provide some details as to what kind of controllers,
> drives, screws, etc... You are using?
Sure thing.
For the electronic part i use a simple self build 3-axis L297/L298
stepper driver which is interfaced to the parallel port of the pc.
In the mechanical part i'm using stepper motors which i bought used in
the internet (no cheap printer motors). They drive the ball screw
threads over a 1:2.5 transmission ratio. The ball screw threads have a
flank lead of 4mm/turn. Only the z-axis has a transmission ratio of 1:5
because of the weight it has to lift.
I use linear ball bearing for all three axis. The whole frame is build
of aluminium and zinc plated screws. As spindle motor i use a Kress 800
FME with 3.125mm chuck.
In my picture gallery you can see most of the parts i used to build the
CNC and how i build them.
For controling i use EMC 2.4.2 which works really good so far. I only
have some strange display errors in the 3D view. But i think that the
driver for the onboard graphics card are very bad.
I'm still not finished with my CNC but it's in a state where i can first
use it for real tests.
Ciao,
Rainer
PS: I hope i found the correct words for the technical parts. :)
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