RE: [CAD_CAM_EDM_DRO] BobCad??

BobCAD does all kinds of weird stuff. The only solution I've found to
prevent the machine from going all the way to the bottom is actually
changing that first Z value manually in NCcam. You just have to check every
time before you run a new program. I've broken more end mills than I'de like
to admit due to this problem.

Another problem that I found is that on multiple passes sometimes BobCAD
decides to bring the tool to clearence after every pass and then feed (very
slowly) back to the new Z depth. Other than being time consuming it's not a
big deal but the only solution for it (as far as I know) is deleting those
lines of code or replacing those Z values for the correct ones. Very time
consuming, especially on long programs. If anybody knows why it does this
and how to fix it ....please let me know.

Alex
-----Original Message-----
From: James Stevens [mailto:stevens@...]
Sent: Friday, November 30, 2001 6:44 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] BobCad??



By no means am I an expert on BobCad, but I ran into the same problem
(jumping to the final cut depth). The solution to my problem was to simply
turn 3D on by clicking on the 3D button within the CAM window. Also make
sure that your max cut depth is less than your stock height - also
controlled in the CAM window. Then when you generate your g-code, you
should see the file size increase greatly.

I'm running V17.0 so I do a verify by simulating the raw stock and watch
BobCad interpret the g-code onto the stock. Really neat to watch the
virtual cuts and "see" your final product.

I learned this while making an aluminum mold for a cable assembly - probably
could have hand cranked 10 of these puppies out in the time it took to do it
the "right" way. But know I know....

My next goal is to be able to get BobCad to do a complex 3D surface. I
expected this to be straightforward when I bought the software, but now I
think otherwise. I want to import a 3D model and generate g-code, not
redraw my 3D model in BobCad.

I'm interested in hearing any success stories on BobCad and 3D models - on
list or off list.

James Stevens
Creative Modeling and Prototyping
jstevens@...

>
> ----- Original Message -----
> From: "David Goodfellow" <davegood@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Thursday, November 29, 2001 8:31 PM
> Subject: Re: [CAD_CAM_EDM_DRO] BobCad??
>
>
> > I'm a Newbie with BobCad, Spud, and have had some problems. First, when
> > converting to G-codes, do not insert "separators" (blank lines) in the
> code.
> > The last command prior to the blank line goes bananas. (Probably this

is

> > not a BobCad problem, but rather G-code interpretation. The other

problem

> I
> > have had (so far) is that even when I stipulate the maximum cut per

pass,

> > BobCad insists on going for the final depth on the first pass. I have

had

> > to cut and paste on the G-code file to get there with multiple passes.
> > Anything in particular you want to know? Probably I don't have the
> answer,
> > but I could at least add it to my list of questions<g>
> >
> > Dave Goodfellow
> > Northridge, CA
> > "No problem too small to baffle this expert"
> >
> >
> > ----- Original Message -----
> > From: <spudwackr@...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Thursday, November 29, 2001 5:44 PM
> > Subject: [CAD_CAM_EDM_DRO] BobCad??
> >
> >
> > > Does anyone use BOBCAD, or know of any forums or list. Just starting
> > > to us it,and need some tips. Thanks,Spud
> > >
> > >
>
>

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