Re: [CAD_CAM_EDM_DRO] CNC Router Head/Motor???

For my current Stewart Platform mill/routing machine, I'm using the Porter
Cable ~1/2 HP laminate trimmer. It works well with 1/4" diameter
bits. The next machine uses the 3.25 HP variable speed router, which
accepts a 1/2" diameter bit. Getting 6" of z-axis movement isn't a problem,
and the tool can be tipped (roll and pitch) to get into some difficult places.

How large are the pieces?

-- Carl
cmm@...
http://www.foxkid.net/cmm/platform/project-notebook.html


04:06 PM 2/24/2003 -0600, you wrote:

>I must not have explained myself very well as usual. I'm not looking to
>cut 6" with a .25 diameter tool. I'm looking to cut 6" with ??? tool? I am
>asking what type of machine head can I buy that will allow me to cut at
>depths of 6~8" like see at this site
>http://www.corpcomp.com/weeks1/mb/mb.html Looks like I will need some type
>of mill had or something with a morse taper or r8 Spindle that will allow me
>to chuck a bigger bit. I've almost thought of using this:
>http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=37505 and
>stripping it down but it doesn't have a spindle that I can work with, I
>think.
>
>Thanks
>
>
>----- Original Message -----
>From: <Yesamazza@...>
>To: <CAD_CAM_EDM_DRO@yahoogroups.com>
>Sent: Monday, February 24, 2003 2:45 PM
>Subject: [CAD_CAM_EDM_DRO] CNC Router Head/Motor???
>
>
> > I would recommend using a 1" dia through hole spindle and using a
> > precision 1" dia collet extension. This will allow you to adjust the
> > extention up and down for min clearance and maximum rigidity. Data flute
> > makes carbide endmills with short flute lengths and long relieved shanks
>$$$
> > but work about the best form my experience. The outside dia. of the
> > extension is a fine ground finish suitable for sleeving to a bearing and
>most
> > extensions are hollow so you can adjust the tool in and out too.
>Extensions
> > are used a lot in the Aerospace industry due to limited space a deep
>reaches
> > in castings ect. I have never cut 6" with a .250 dia tool and would
> > recommend avoiding that kind of tool length if at all possible I have cut
> > alum with a 3.0"x .25 dia tool over 6" with a 1" dia extension and it
>worked.
> > Thats my 2 cents hope it is of some help.