Re: Sherline Auto Tool Changer

Hi John;

That sounds like something which could be done.

I have temporarily joined the EMCO group and made a few posts there,
I have had a couple of replies but I believe that the EMCO way may
not be feasible for a sherline retrofit.

I have had a look at the pics for the EMCO on their web site and as
you face the front of the machine, there is a round drum about 350
mm dia which is attached to the Z axis. I have copied the picture to
the pics directory (emcochanger.jpg).

This drum has the tools protruding out I guess every 30 degrees and
the whole drum rotates, I believe that this would not be very do-
able as a retrofit!

What I have in mind is to use the Sherline End Mill Holders
(http://www.sherline.com/3079pg.htm) as the quick change tool
holders and somehow have a carousel off to the side which offers the
tools up to the spindle, removes one and replaces with another.

Not as simple as that I know, but in my mind it seems a bit easier
than the EMCO approach.

I'd like to see some pics, diagrams etc of these robo drills if any
one has them, maybe that will give me some inspiration !

Regards

PeterC


--- In CAD_CAM_EDM_DRO@yahoogroups.com, marble here <marble_h@y...>
wrote:

> I was watching this thread here is my two cents
>
> I am a Millwright and do a lot of repairs and rebuilds on cnc

machines one

> of which is robo drills. They have one of the best I have seen so

far in

> the way of tool changes it works off a rotary tool holder with out

going

> to deep here and now .
>
> The low down is as follows when we want a tool change we go to the

sub

> program the head goes up and there is a cam on the rotary tool

holder that

> the folows a track on the side of the head as the head goes up the

tool

> holder starts to move into the head also there is a arm in the

head that

> releases the tooling in the head as the forks of the toolchanger

is under

> the spindle and the head has to be at the right hight .The tool

changer is

> then moved again out from the head . Now for the changing of the

tooling

> there is a smalle gear on the bottom of the spindle and one also

on the

> changer they ingage and the spindle turns as many rotations as

needed and

> moves the next tool into place and the head again moves up and

installs

> the tooling . this all happens in about 5 seconds or less I have

never had

> to check this out.
>
>
> I will see if I can copy and do in my own words how it works if

someone

> want more info I will get some pics of the changer also.
>
> This is just my Two cents I hope it does not confuse the issue
> John Brauweiler
>
>
>
> --- Alan Marconett KM6VV <KM6VV@a...> wrote:
> > Ballendo,
> >
> > You are correct. I just noticed "mill" in Peter's post. Makes

it a

> > different ball game! It WOULD be a nice addition to the lathe,

however.

> >
> > Alan KM6VV
> >
> > "ballendo " wrote:
> > >
> > > Alan,
> > >
> > > The Emco toolchanger design might be used to "offer" the tool

to the

> > > MILL spindle, but you will still need some way of attaching and
> > > detaching the tool...
> > >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
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