RE: [CAD_CAM_EDM_DRO] Re: How to Program a CAD / G-code/Machine commands freesource code?

If you assume that an existing CAD package will be used and either a roll
you own machine controller or available software, then the CAM portion
becomes manageable.

With the CAD program producing DXF files, there are object libraries
available that can be included in a VB or C++ program that will read a DXF
file and make the elements available to the program. Go a Google on DXF
libraries or objects. Without the library, learning the structure of a DXF
file is lengthy. The object library presents the information in a form of
easily usable arrays.

I wanted to write a CAM program that would handle facing profiles on a CNC
lathe. There weren't any CAM programs that I found that could do this on my
budget. I wrote my own and it worked successfully - for a vary limited set
of conditions. The DXF library I used was free for development, but wanted
a fee for use. The penalty at the free stage was a nag screen each time the
library was accessed.

Warning: this type of project can become a 'deep hole' of time. There is the
tendency to want to add just one more feature.

Dennis in Houston

>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "elwolv" <elwolv@...> wrote:
> >
> > hello;
> >
> > thanks to Dan Hudgins for referencing this forum for my project.
> > I building a micro CNC machine
> > I want to write SW for simple CAD front /to G-code / to Machine commands
> >
>
>