RE: [CAD_CAM_EDM_DRO] Automatic or easier tool changes for R8mills?

Hi Kim -

I've got the Benchman, and it has no keying features. I don't
know for sure about the Defiance, but I'd guess it would be the
same. Control of angular orientation on the spindle would add
considerable cost.

Regards,

Carlos Guillermo
VERVE Engineering & Design

-----Original Message-----
From: Kim Lux [mailto:lux@...]
Sent: Thursday, November 06, 2003 3:19 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: RE: [CAD_CAM_EDM_DRO] Automatic or easier tool changes
for R8mills?

Did these systems use a keyed collet or was it keyless ? An
unkeyed
system, like a straight shank would be pretty easy to change tools
with,
provided one can automate the drawbar.

Kim

On Thu, 2003-11-06 at 14:38, Carlos Guillermo wrote:
> The system Mike describes is also used on old Defiance VMC's and
> Light Machines' Benchman VMC's.
>
> Regards,
>
> Carlos Guillermo
> VERVE Engineering & Design
>
> -----Original Message-----
> From: Mike Gann [mailto:mikegann@...]
> Sent: Thursday, November 06, 2003 1:21 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: RE: [CAD_CAM_EDM_DRO] Automatic or easier tool changes
> for R8mills ?
>
> It attached with threads. Roland made his own tool holders for
the
> different
> sized endmills, center drills, drills, etc.
> The OD of these holders were 3/4" if I remember right and they
had
> a larger
> OD down toward the tool end. He then had this lever/cam operated
> drawbar
> with a 3/4" R8 collet in the spindle. He could then loosen the
> draw bar,
> remove the current tool, slide in the new tool (with a positive
> stop against
> the larger OD of the tool holder and the collet), then flip the
> lever to
> engage the collet. The article indicated this setup gave good
> repeatability
> on tool lengths.
>
> The tool holders use the same basic shape as the ones Les Watts
> has on this
> page:
>
> http://www.lmwatts.com/forsale.html
>
> If I can find the issue I will let you know.
>
> Mike
>
>
>
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aol://5863:126/rec.crafts.metalworking or go thru Google.com to
reach it if you have trouble.
http://www.metalworking.com/news_servers.html

http://groups.yahoo.com/group/jobshophomeshop I consider this to
be a sister site to the CCED group, as many of the same members
are there, for OT subjects, that are not allowed on the CCED list.

NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING
THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO
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