Re: creating toolpath..

Jens,

It sounds like you're polishing the entire surface, not just
a "pocket" area... and I assume the tool must go slightly beyond the
edges so the spiral pattern gets the entire surface and corners. I
don't really see a need for a CAD and/or CAM program to do this for a
rectangle. Looks like a simple Windows program to write in IBasic...
Input a few parameters into edit boxes, calculate the path using a
parametric spiral and output G-code for the paths. I've even been
playing with toolpath display...

www.woodsucker.com/cncpyxia.htm

I'd be glad to help you out with this if your time-frame isn't too
demanding.

Larry


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Jens Swales"
<jipeess2000@y...> wrote:

>
> hi group
>
>
>
> i need to find out a conveniant way to create toolpaths for hi-

gloss

> polishing of glass and marble/granite surfaces (common size is
> 400x600mm). the rule is to never grind/polish the same path twice

or

> you will get marks, streaks etc. that will be visible from
> particular angles.
> the work sequence is:
>
> 1st rough miller diamond/nickel grit 60, could be any pattern, it
> just removes the stock
>
> 2nd pre-shaper diamond/nickel grit 120, zig-zag passes to remove
> previous scratches
>
> 3rd grinder diamond/resinbond grit 100, removes previous scratches

in

> a tight spiralshape toolpath
>
> 4rd grinder diamond/resinbond grit 200, removes previous scratches

in

> a less tight spiralshape toolpath
>
> 5th-8th, 500-3000 grit in a random pattern
>
> so far, the results is ok, but takes an awfull time to hack the

code.

> i use a 2d cad to create a pattern for each tool, so its alot of
> copy&paste
>
> it would be sooo easy to just draw my square and hit a key that
> generates the code with all the different tools pre-stored paths

and

> parameters..
>
> g, its difficult to describe in english
>
>
> js