Re: I need help defining cutter compensation (Offset?) in Dolphin CAD/CAM

Michael,

John S showed a section of the "text" file which must be altered in
the post processor. That text file looks suspiciously like VB or
some offshoot. From that I assume a person could tailor their posts
to do virtually anything.

BTW, how does an individual in the USA go about purchasing Dolphin?
How is the payment handled, mail a check, money order, wire transfer,
cash? Shipping charges? Please post your mailing address again, if
you don't mind.

thanks,

Doug




--- In CAD_CAM_EDM_DRO@y..., "Michael Milligan" <mmmilligan@f...>
wrote:

> Doug
>
> Yes, the post processor can be tailored to cope
> with the various practices used in applying CRC. Also
> the contour facility allows you to specify an
> Approach/Runoff move, this move can be used to apply
> or cancel CRC before the tool actually starts the
> Contour. Approach/Runoff moves may be Tangential, Parallel
> or Normal to the direction of cut of the contour.
>
> regards
> michael
>
> -----Original Message-----
> From: doug98105 [mailto:dougrasmussen@c...]
> Sent: 16 December 2001 18:20
> To: CAD_CAM_EDM_DRO@y...
> Subject: [CAD_CAM_EDM_DRO] Re: I need help defining cutter

compensation

> (Offset?) in Dolphin CAD/CAM
>
>
> John,
>
> Dolphin looks pretty straight forward. Obviously, the second

screen

> shot you provided would be my favored way of doing the job

(provided

> the CNC controller will support it).
>
> I looked over the generated code and noticed some things that may

not

> work with all controllers. It appears the end mill goes to depth,
> then compensates (G41) while at depth with a feed rate of F12.

Some

> controllers compensate at rapid rate which would not be a good
> situation if the cutter is already into the part. Likewise, the

G40

> while the cutter is still at depth. In my shop I have 4 different
> controls, all have their own strange habits when it comes to CRC,

so

> we make it a rule to always try to engage CRC with the cutter at

Z.1

> above the part.
>
> Is there a way to "teach" Dolphin about the CRC quirks of different
> controllers?
>
> thanks,
>
> Doug
>
>
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., "stevenson_engineers" <machines@n...>
> wrote:
> > --- In CAD_CAM_EDM_DRO@y..., "doug98105" <dougrasmussen@c...>

wrote:

> > > Eric,
> > >
> > > In the long run you'll be much better off letting the CNC
> > >controller
> > > do the offsetting rather than doing it in CAM. Of course this
> only
> > > works if your controller supports CRC (cutter radius
> compensation),
> > >I
> > > think Ahha does.
> > >
> > > To have your controller handle the CRC, requires the CAM

software

> > >to
> > > insert the correct offset commands, G40,G41,G42, in the
> appropriate
> > > places in your Gcode file. I don't know anything about Dolphin
> so
> > >I
> > > have no idea whether it will do this for you automatically, or
> > > whether you have to manually edit the Gcode file and insert the
> > > commands yourself.
> > >
> > Doug and list,
> > Look at:-
> > http://homepage.ntlworld.com/machines/offset.txt
> > To see how Dolphin handles offsets automatically.
> > You don't need to draw offsets in Dolphin, it will do it all for
> you.
> >
> > John S.
>
>
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