Re: XY point list for spiral to DXF?

Dhiren,

Thank you for offering to do this for me. The space between the
spirals should be .75"

I may also use 1" spacing also. This is a prototype. I'm afraid I
will have to do some experimenting to find out the optimal size of
the machine I'm working on.

If you started with the inner hole of 3" diameter and went to 24" on
the outer size, I could edit the drawing in Turbocad, as long as it
was a DXF.


Thank you also for letting me know that illustrator and corel draw
have these capabilities within them!

Thanks again for offering to help.

Tom Eldredge


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Dhiren Shah" <dshah@s...>
wrote:

>
> Please, let us know, if you need help. We can generate a spiral

either in

> Corel Draw or Illustrator, export as DXF file and send it to you.

If you can

> take EPS file, we will not have to export as DXF file.
>
> How much spacing do you need between the spirals with your inner

diameter of

> 6 inches and the outer diameter of 20 inches?
>
> Dhiren Shah, Dir., Operations
> Solustan, Inc., 165 Chestnut St., #200, Needham, MA 02492
> PH:781-449-7666, FAX: 781-449-7759
> www.Solustan.com
> www.LinkMotion.com
>
> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com]On Behalf Of rutexusa
> Sent: Thursday, January 05, 2006 11:21 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: XY point list for spiral to DXF?
>
> Victor,
>
> My son has Turbo Pro ver 11.1. I used to know how to run it, but it
> has been too long. I sat down and clicked on spirals, and I

couldn't

> figure how to make it do anything. It says it's for 3d spirals.

The

> manual was no help to me. Could I chat with you over the phone

about

> it? Maybe we can get it done in Turbo. For the most part we only
> use Turbo in 2d. I didn't have any objects to work with. I just
> need a simple spiral, starting with a 6" hole in the middle and
> ending up with a "diameter" of 20". It would be like taking a rope
> and coiling it up on a flat surface with each ring of the
> coil "parallel" to the ring inside it. If turbo can do it, I'd like
> to use it, as this design may need to change. It is for a

prototype.

>
> If you could give me your phone #, I'll be happy to call you.
>
> Thanks for your help.
>
> Tom Eldredge
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Victor A. Estes"
> <emc3zach@h...> wrote:
> >
> > Tom,
> >
> > What ver of TurboCad do you have? TurboCad Pro Ver 11.1 does
> spirals
> > and threaded bolts as a utility added to the program. If you want
> I could
> > generate the spiral for you, save it as a dxf file, then you could
> import it
> > into your version of TurboCad. The dxf file could also be

imported

> into a
> > g-code generator to automatically get the code you want.
> >
> > You can also find AutoLISP (.lsp) files for AutoCad on the
> internet that
> > does Spirals and Helix's. I have those as well if interested.
> >
> > Victor A.
> > ----- Original Message -----
> > From: "Chuck Merja" <chuckm@3...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Thursday, January 05, 2006 8:57 AM
> > Subject: RE: [CAD_CAM_EDM_DRO] XY point list for spiral to DXF?
> >
> >
> > Oh that would be fun - Spirals are generally defined in polar
> coordinates.
> > I'd create a spreadsheet that automated the spiral polar
> coordinates, and
> > then calculate the rectangular coordinates therefrom. I think
> Archimedes
> > grew his spiral linearly, but there are several others...
> >
> > I'd be willing to help with the SS if you like.
> >
> > I grabbed the following from
> > http://www.bookrags.com/sciences/mathematics/spiral-wom.html
> >
> > Spirals are classified by the mathematical relationship between

the

> length r
> > of the radius vector, and the vector angle q, which is made with

the

> > positive x axis. Some of the most common include the spiral of
> Archimedes,
> > the logarithmic spiral, parabolic spiral, and the hyperbolic

spiral.

> >
> > The simplest of all spirals was discovered by the ancient Greek
> > mathematician Archimedes of Syracuse (287-212 BC). The spiral of
> Archimedes
> > conforms to the equation r = a, where r and represent the polar
> coordinates
> > of the point plotted as the length of the radius a, uniformly
> changes. In
> > this case, r is proportional to .
> >
> > The logarithmic, or equiangular spiral was first suggested by Rene
> Descartes
> > (1596-1650) in 1638. Another mathematician, Jakob Bernoulli (1654-
> 1705), who
> > made important contributions to the subject of probability, is

also

> credited
> > with describing significant aspects of this spiral. A logarithmic
> spiral is
> > defined by the equation r = e a, where e is the natural

logarithmic

> > constant, r and represent the polar coordinates, and a is the
> length of the
> > changing radius. These spirals are similar to a circle because

they

> cross
> > their radii at a constant angle. However, unlike a circle, the
> angle at
> > which its points cross its radii is not a right angle. Also, these
> spirals
> > are different from a circle in that the length of the radii
> increases, while
> > in a circle, the length of the radius is constant. Examples of the
> > logarithmic spiral are found throughout nature. The shell of a
> Nautilus and
> > the seed patterns of sunflower seeds are both in the shape of a
> logarithmic
> > spiral.
> >
> > A parabolic spiral can be represented by the mathematical equation
> r2 = a2.
> > This spiral discovered by Bonaventura Cavalieri (1598-1647)

creates

> a curve
> > commonly known as a parabola. Another spiral, the hyperbolic

spiral,

> > conforms to the equation r = a/.
> >
> > Another type of curve similar to a spiral is a helix. A helix is
> like a
> > spiral in that it is a curve made by rotating around a point at an
> > ever-increasing distance. However, unlike the two dimensional

plane

> curves
> > of a spiral, a helix is a three dimensional space curve which lies
> on the
> > surface of a cylinder. Its points are such that it makes a

constant

> angle
> > with the cross sections of the cylinder. An example of this curve
> is the
> > threads of a bolt.
> >
> > Chuck Merja
> > www.3rivers.net/~chuckm/index.htm
> >
> > Lemelson-MIT Inventeams - http://web.mit.edu/invent/n-main.html
> >
> > US FIRST Robotics - http://www.usfirst.org/
> > lat/long 47.52383 -111.67912
> > 211 Adams Rd
> > Sun River, MT 59483
> > vx 406.264.5955
> > cell 406.799.5955
> > fax 406.264.5830
> >
> > -----Original Message-----
> > From: CAD_CAM_EDM_DRO@yahoogroups.com
> > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of rutexusa
> > Sent: Thursday, January 05, 2006 7:35 AM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: [CAD_CAM_EDM_DRO] XY point list for spiral to DXF?
> >
> > Gentlemen,
> >
> > I tried to make a spiral within Turbocad without success.
> >
> > So...I plan to write a short basic program to generate an
> archimedean
> > spiral with particular dimensions that I want to have waterjet cut
> out
> > of sheet metal. Then I will have a list of coordinates. I want

to

> > inport this list to a cadd program to do a little more editing and
> > which will give me a dxf file ready to cut for the waterjet

company.

> >
> > Does anyone know of a program/way which will allow me to take a
> simple
> > list of coordinates and produce a dxf file for input to a cadd
> > program?
> >
> > Is there a better way of doing this without buying another

expensive

> > cadd program?
> >
> > Tom Eldredge
> >
> >
> >
> >
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
> >
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wanliker@a...,

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wanliker@a...,

> > timg@k...
> > Moderator: pentam@c... indigo_red@q... davemucha@j...
> > [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
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> reach it if
> > you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this to
> be a
> > sister site to the CCED group, as many of the same members are
> there, for OT
> > subjects, that are not allowed on the CCED list.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING
> THEM.
> > DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
> >
> >
> > Yahoo! Groups Links
> >
>
>
>
>
>
>
> Addresses:
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> [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to

reach it if

> you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to

be a

> sister site to the CCED group, as many of the same members are

there, for OT

> subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING

THEM.

> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>