Re: [CAD_CAM_EDM_DRO] Re: XY point list for spiral to DXF?

Tom,

No problem, email me at emc3zach@... and I will email back my phone
number. While I wait for your response. I'll try and generate the Spirals.

Victor A.

----- Original Message -----
From: "rutexusa" <rutexus@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, January 05, 2006 10:21 AM
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
>>
>>
>>
>>
>>
>>
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>> http://groups.yahoo.com/group/jobshophomeshop I consider this to
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> 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........
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