Re: SeriesII Quill Zaxis CNC addon ideas: Like Jon E's?

I know I know Tim, I'm like rainman sometimes. Good points!.
I'm also an excellant driver :-), and a procrastinating machinist
wannabe....
-Lee

--- In CAD_CAM_EDM_DRO@y..., "Tim Goldstein" <timg@k...> wrote:
> I vote for number 4.
> 1 - That is how the machine is designed to work
> 2 - It is very accurate with no backlash (amazing what ground
ballscrews
> driving 1500 lbs or so of knee will do for you)
> 3 - It already moves fast enough to mess your britches
> 4 - The point is to produce parts not machine modifications
>
> Tim
> [Denver, CO]
> Sherline products at Deep Discount (now Mach1 CNC controller too)
> www.KTMarketing.com/Sherline
>
> ----- Original Message -----
>
> > I was wondering if, in the future, it would be feasible to add
> > a ballscrew mechanism to move the quill of my older seriesII
model;
> > where the knee is the Z axis. The quill at one time had
> > the air-driven-spindle-wizard-rotary-depth-stop-thingy( technical
> > term ) which I removed.
> > The mill has a larger 4.25 diameter quill that is a
little 'sticky'
> > to move. A previous owner put way lube thru the quill I think at
> > some point. It has has gotten easier over time as it works out.
> >
> > I remember seeing a picture of Jon's setup where a 'clamp' is
> > attached at the end of the quill with a ballscrew to move it. I
also
> > saw on Ebay a mill just like mine, but they had some weird
ballscrew
> > setup on top of the head that appeared to work straight down the
> > drawbar entry hole. My quill doesn't have the drawbar hole that
goes
> > all the way through to the tool holder. Its a quickchange type 40
> > taper. Options I'm guessing at are:
> > 1) Using the depth bar that moves in parallel to the quill (
sturdy
> > enough? Offset force issues? ).
> > 2) A clamp on the quill and several ballscrews to drive it
up/down.
> > 3) Something through the center of the quill. Probably
disassembly
> > and modification needed to the quill.
> > 4) Just use the Knee and shut up :-) most likely what will occur.
> >
> > Thanks for any ideas.
> > -Lee
> >
> >
> >
>
> > FAQ: http://www.ktmarketing.com/faq.html
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY
POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner