Re: [CAD_CAM_EDM_DRO] HF micro mill (part no. 47158) suitability for CNC

Thanks for the reply

> Actually they are hacked out of these wierd assemblies I found on ebay.
> The assemblies come with a motor, encoder, helical coupler, short
> ballscrew (too short for much of anything), doule row bearing, a tubular
> housing and some other bits and pieces. For how much they cost they are a
> steal.

i had not read all the messages in the group before posting that, i saw
your reply from a few months ago. sorry.. found the weird assemblies on
ebay. still doesn't have any more. nice find...

> No I don't. I just kinda winged those. I ground a form tool to match the
> size and shape of the belt and just plunged straight in on the lathe. It
> screamed and chattered like crazy but it worked.

no problem, i havent looked at the ratio yet. was thinking about a dual
groove to maintain a high/low range.. not sure if there is enough room
yet..

> Wow! That would be a cool thing to have in the files section if you feel
> so inclined! <hint> <hint> :)

well i am a neophyte draftsman at best, and i use QCad in Linux. i have
had problems opening the dxf's in other programs. the dimensions come
out really weird.

i have all the screws, column, and table drawn already though. ill post
when done.

have you found any other sites of people who have retro'd this machine?
here is what i have so far:

http://www.andyn.net/micro_mill.htm - not a retro just a happy owner
http://www.embeddedtronics.com/ - under metalworking
http://www.kdntool.com/ - turnkey systems

thanks again
C Cowley

On Thu, 2003-10-16 at 19:23, Chris Baugher wrote:
> On Tue, 14 Oct 2003, Chris Cowley wrote:
>
> > i really like your conversion. nice machine.
>
> Thanks!
>
> > haven't had much time to work on it. but i got the X stiction down from
> > 85.30 in/oz to 17.44in/oz, Y did not give up nearly as much. started at
> > 34.34in/oz down to 33.28in/oz. bearings should help considerably..
>
> They will. The critical thing is the alignment of the leadscrews with the
> anti-backlash nuts under the table. If it isn't exactly right the
> friction goes way up.
>
> > those motor mounts are quite impressive, did you cast them? or hog em
> > out of square bar? or are they something off the shelf?
>
> Actually they are hacked out of these wierd assemblies I found on ebay.
> The assemblies come with a motor, encoder, helical coupler, short
> ballscrew (too short for much of anything), doule row bearing, a tubular
> housing and some other bits and pieces. For how much they cost they are a
> steal.
>
> > belt drive is high on the list too. you wouldn't happen to have a
> > drawing of those pulleys?
>
> No I don't. I just kinda winged those. I ground a form tool to match the
> size and shape of the belt and just plunged straight in on the lathe. It
> screamed and chattered like crazy but it worked.
>
> > im planing to draw up the whole machine in cad before i do anything
> > else. i need the practice and it should be a good exercise.
>
> Wow! That would be a cool thing to have in the files section if you feel
> so inclined! <hint> <hint> :)
>
> C|
>
>
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