RE: [CAD_CAM_EDM_DRO] Re: Questions on electronic edge finders

Graham Stabler made such a probe for his Proxxon mill:

http://www.indoor.flyer.co.uk/probe.htm

The largest tool the Proxxon will take is 1/8" so tooling for it is a
special kind of challenge :)

Richard

On Thu, 2005-03-31 at 02:29, Andrey Lipavsky wrote:
> This is a great idea! Thank you for the suggestion. In answer to your
> question, I would like something that can also serve as a 3D digitizer.
> Please let me know your thoughts on this.
>
> Thanks,
> Andrey
>
> -----Original Message-----
> From: caudlet [mailto:thom@...]
> Sent: Wednesday, March 30, 2005 7:51 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Questions on electronic edge finders
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "cnc_4_me" <cnc4me@g...>
> wrote:
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, alipavsky@i... wrote:
> > >
> > > 1) I need an electronic edge finder with an 1/8" shank. I've
> been
> > looking
> > > online for a couple weeks fruitlessly so I hope somebody has
> > suggestions.
> > > 2) Do TurboCNC or Mach2 deal with such devices?
> > >
> >
>
> If the quest is for a small 1/8" edge finder you could use a piece of
> 1/8 drill rod or other appropriate stem. A piece of nylon turned to
> 1/4" on one end and 1/8" on the other and a hole drilled in the 1/4"
> end to press fit the rod. The trick would be to get a small stranded
> insulated wire (with the insulation stripped back about 1/2 inch)
> swedged in with the rod. Now you have a probe that is the postive
> end of a "finder". The negative goes to the machine and when the tip
> touches metal you can use the closed circuit to actiave a remote
> light or buzzer.
>
> This describes an 'edge finder" that is a lateral touch tool. If you
> are looking for a probe to use with MACH2 (which has a probe input
> that is typically used for 3D digitizing) then its a different
> animal. Are you looking to zero the DRO in MACH2 when you touch an
> edge? You still have to crank in the offset for the probe rod
> (radius).
>
>
>
>
>
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