Re: [CAD_CAM_EDM_DRO] Re: rotating ballscrew mount - mini-mill

Dave,

They were out of the one I wanted. Will have to look again shortly to see if they are in stock.

Ron's design calls for a fairly coarse screw that will allow manual operation of the Z. I built the X-Y stepper mounts to Ron's design but opted for heli flex couplings instead of the home brew in his plans. I am running a Xylotex 3 axis controller with Mach3 and in two axis mode it seems to do just fine. Eventually I want to replace the X-Y screws with ball screws. Ron's drawings of the Z axis are a bit confusing to me but I have to spend more time looking at them. I have Ron's belt drive which is outstanding.

Jack




oo.com> wrote:
McMaster seems to have about as good a price on ball screw as you
are going to get new.

they also have round and regtangular nuts. the round cost quite a
bit more that the square.

Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jack McKie
<freshwatermodels@...> wrote:

>
> Dave,
>
> Take a look at Hoss's mini-mill retrofit. I have plans from

Ron Steele and they also show what you are looking for. Once I
find a nice affordable ball screw I plan on using Ron's plans. It
does add to the height of the machine and requires relocation of the
power box.

>
> Jack
>
> turbulatordude <dave_mucha@...> wrote:
> Hi all,
>
> I am starting to lay out a mini-mill retrofit and am thinking about
> using a fixed screw and a rotating ball nut.
>
> Anyone have plans ? ideas ? warnings ?
>
> It seems the nut needs to be on a bearing block with thrust

bearings.

>
> Thanks,
>
> Dave
>
> (cross posted on the Grizhfminimill list)
>
>
>
>
>
>
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