Re: [CAD_CAM_EDM_DRO] Re: Vectorcam, bobcad, rhino3D, which one??

The answert to your questiondepends partly on how complex the profiled
blades are.

If a single blade can be drawn fairly easily, then its very simple to copy
the sigle blade as many times as required and "attach" them to a hub.

Smoke

>How easy is it to draw rotors with profiled blades that must be cut on a
>fourth axis in Rhino3D etc? It's obviously got a lot to do with skill in
>using the program but is it approaching impossible or pretty simple?
>
>John. H
>
>
>----- Original Message -----
>From: "tauseef" <alieron@...>
>To: <CAD_CAM_EDM_DRO@yahoogroups.com>
>Sent: Monday, May 28, 2001 7:59 AM
>Subject: [CAD_CAM_EDM_DRO] Re: Vectorcam, bobcad, rhino3D, which one??
>
>
>> Hi Mike,
>> thanks! Rhino does seem straight forward and it looks nice too, an
>> added benifit. What CAM package do you use to convert the drawing you
>> make in Rhino3D. I am tring out the demo right now. I am a full time
>> optometry student so the $195 price tag is really inviting right now!
>> I can wait a bit as I will be a student for one more year but am
>> leaning toward Rhino for my 2.5 and 3D drawings already. TurboCAD 3D
>> is another option (I guess).
>> thanks
>> tauseef
>>
>> --- In CAD_CAM_EDM_DRO@y..., "Mike Phillips" <mikep_95133@y...> wrote:
>> > I've used Rhino for a few months now. It's Excellent!
>> >
>> > Mike
>> >
>> > --- In CAD_CAM_EDM_DRO@y..., "tauseef" <alieron@h...> wrote:
>> > > Hey guys (John, Tom, and Paolo + any others),
>> > > I am so sorry that I did not respond to your letters before! I
>> was
>> > > just doing a search on these CAD/CAM packages again and ran
>> across
>> > > these posts!! Sorry! To answer your question of what I plan to
>> make
>> > I
>> > > would say things like 3D name plates, parts for my radio control
>> > > helicopters, car and planes (these would really be more 2 1/2D),
>> > some
>> > > jewelery, possibly "artwork," business card holder for my
>> brothers
>> > > and sisters and other silly things like that. Answering that
>> > question
>> > > is really pretty hard (even though I know its very important). I
>> > love
>> > > this machining stuff and the 3D CAD/CAM package would really be
>> more
>> > > of a luxuary as I don't know how much 3Ding I truely would be do
>> > > considering the time involved in drawing out a 3D object.
>> Machining
>> > > is also a hobby for me and not my profession so I don't need the
>> > real
>> > > high-end stuff. I downloaded Rhino3D today and must say for the
>> 30
>> > > min I have spent on it, I am impressed! Its seems very straight
>> > > forward. I also have the demo of vectorcam but find it quite hard
>> to
>> > > work with. Millwizard is also very impressive and I can't even
>> > > imagine how wonderful the higher end CAM packages must be! Would
>> a
>> > > combination of TurboCAD and Millwizard be a consideration?
>> > > thank you guys again for your input and I hope to answer much
>> > quicker
>> > > next time :)
>> > > tauseef
>> > >
>> > > --- In CAD_CAM_EDM_DRO@y..., machines@n... wrote:
>> > > > --- In CAD_CAM_EDM_DRO@y..., pavel59@y... wrote:
>> > > > > John, I don't want to enter the dispute about the stand alone
>> > CAM
>> > > > > packages, I agree, there're a few of them and the majority of
>> > > them
>> > > > > are very expensive.
>> > > > > But about the 3D side, I want to make one thing clear: CAD
>> > > doesn't
>> > > > > necessairly mean 3D and viceversa. Drawing exchange doesn't
>> mean
>> > > > > surface exchange and so far.
>> > > > >
>> > > > > C.A.D. means Computer Aided Design (Drafting), usually
>> > mechanical
>> > > > or
>> > > > > architectural drawing, modeling and detailing
>> > > > > A more recent definition like C.A.S. (Computer Aided Styling)
>> > and
>> > > > > C.A.I.(D). (computer Aided Industrial Design) label those
>> > > > > applications - like Rhino, Alias Studio, SolidThinking, Form-
>> Z
>> > > and
>> > > > > few others - which are specialized in 3D modeling. These
>> > > softwares
>> > > > > usually support specialized features for advanced surface
>> > > modeling
>> > > > > and evaluating which are not available on general purpose or
>> > > > > mechanical CADs.
>> > > > >
>> > > > > Some other high-end applications like ICEM and Imageware
>> > Surfacer
>> > > > are
>> > > > > also used in the automotive industry for C.A.S. but they
>> > actually
>> > > > are
>> > > > > Reverse Engineering applications.
>> > > > >
>> > > > > Rhino isn't a CAD package (ask McNeel if they would consider
>> it
>> > a
>> > > s
>> > > > a
>> > > > > CAD), it's a 3D surface modeler (with oustanding capabilities
>> at
>> > > a
>> > > > > very low price).
>> > > > >
>> > > > > DXF isn't a format you would rely for exchanging consistent
>> 3D
>> > > > > surfaces, IGES, STEP and other more exotic formats are better
>> > > > suited
>> > > > > for this.
>> > > > >
>> > > > > If I was Mr. Tauseef and I had no access to the packages I
>> > > actually
>> > > > > have, but - at the same time - I really needed serious 3D
>> work,
>> > I
>> > > > > would consider a professional package like Rhino and would
>> look
>> > > > > around me for a CAM able to read any IGES, STEP or even a STL
>> > > file.
>> > > > >
>> > > > > I remember a japanese site with lot of impressive examples of
>> > > jobs
>> > > > > done that way on small personal CNC mills, modeled in Rhino
>> > > > (mostly)
>> > > > > and processed into some inexpensive CAM software.
>> > > > >
>> > > > > In 3D, the quality of the source is the most important step:
>> if
>> > > you
>> > > > > don't have a reliable surface to work, it doesn't matter
>> which
>> > > CAM
>> > > > > package will process it.
>> > > > > STL exchange format could be a good compromise, it gives you
>> the
>> > > > > choice for resolution/speed/time/precision you can afford and
>> > let
>> > > > you
>> > > > > use one of the affordable packages available today. Don't
>> forget
>> > -
>> > >
>> > > > it
>> > > > > has been developed for the high precision Stereolitography
>> > > > > prototyping process.
>> > > > >
>> > > > > Finally, about those specific CNC operations and cycles you
>> > > > > mentioned, I suppose you could machine your free-form
>> surfaces
>> > > the
>> > > > > way I suggested and then, import those mechanical features
>> into
>> > > > > another apllication which better handles them.
>> > > > > I feel this is a quite common procedure (at least I could see
>> it
>> > > > > being applied several times in professional machining).
>> > > > >
>> > > > > I hope my words are understandable, this isn't my first
>> language
>> > > > and
>> > > > > I apologize for the mistakes.
>> > > > >
>> > > > > Paolo Velcich
>> > > > > industrial designer
>> > > >
>> > > > Paolo,
>> > > > Thank you for the reply and I had no trouble understanding it.
>> > Your
>> > > > english is 10,000 times beter than my Italian?
>> > > > You are not entering into a dispute at all, that's what
>> discussion
>> > > > groups are for. I've left your post virtually intact and I'll
>> try
>> > > to
>> > > > cover the replies in order.
>> > > > Firstly though I don't want to appear to be knocking Rhino I am
>> > > only
>> > > > trying to give general answers.
>> > > > I was lead to believe that DXF files can give 3D information
>> > hence
>> > > > the DXF3D tag on some file names, Millwizard is one I believe.
>> > > > Obviously not all prgrams can ouput these files.
>> > > > Your remarks about CAS, CAI[D] and ICEM whilst being very valid
>> > are
>> > > > really out of the scope of this list which is very hobby based.
>> > > > The use of Rhino and a STL based cam system will give very good
>> > > > results as you point out but this combination will then deplete
>> Mr
>> > > > Tauseef's funds leaving him nothing left to buy another package
>> to
>> > > > handle the other milling cycles, most of which will cost the
>> same
>> > > as
>> > > > his initial purchase. So instead of paying $800 which I think
>> was
>> > > the
>> > > > mentioned figure he will finish up paying twice that for four
>> > > > programs, duplicating in cases what he needs.
>> > > > You mention that in professional machining this is done but
>> I've
>> > > als
>> > > > seen where a company has paid $15,000 for a CAD/CAM package,
>> > > realised
>> > > > that it doesn't suit them and are looking for another one.
>> > > > I don't think anyone on this list falls within this scope.
>> > > > We are all stabbing in the dark because Mr Tauseef laid down a
>> > very
>> > > > open ended question. Until we get clarification on his proposed
>> > > uses
>> > > > we will be split between those offering Rhino / STL Works /
>> > > > Millwizard / Rams/ Ampari and what I call full blown 3D CAD/CAM
>> > > >
>> > > > Come on Tauseef we are fighting on your behalf and you aren't
>> > > holding
>> > > > your end up <BG>
>> > > >
>> > > > John Stevenson
>> > > > Nottingham, England.
>>
>>
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