Re: [CAD_CAM_EDM_DRO] Subroutine help

Yes, that sounds a lot better. I didn't know that was
an option (I have a book on order, but meantime, I am
piecing everthing together from the web and the really
sparse manual that goes with the machine I am using).

What is the syntax for a loop routine?

Thanks!
mike

--- Smoke <gordonr@...> wrote:

> I'd use a looping routine and use G91 for
> indexing...there'd be a whole lot
> less lines of code that way.
>
> Smoke
>
>
>
> >Hi, I am in the early stages of learing CNC
> >programming and am hoping that someone can help me
> >with a simple problem. I think that I know what I
> >want to do, but I don't really know how to write
> it.
> >
> >A bit of description to help visualize my project:
> >I am drilling holes and cutting slots into 1/8"
> tubing
> >that I have clamped in a v-groove. I am making
> units
> >1.5" long... leaving space for the clamp, they
> repeat
> >every 1.75". Each unit will have a small mark to
> >indicate where to cut the start and finish, which I
> >plan to make by tapping the surface with a center
> >drill. Each will have a #59 hole drilled through,
> and
> >a 1/16" slot milled .5" along the middle.
> >
> >Because of the repeating units, I think that I want
> to
> >use subroutines to accomplish this. For example,
> each
> >unit requires 3 center drilling actions. Here is
> some
> >of the code that I have written:
> >
> >G90 ;Absolute coordinates
> >M25 ;Move head up to clear main clamp
> >G00 x2.5 y0.5 Z0.4 ;move to start of first unit
> >
> >M03 S100 ;spindle on
> >
> >:Center Drill
> >
> >G91 ; incremental
> >G81 X0.0 Y0.0 Z-0.1001 R-.3 F3 ;kiss top to mark
> start
> >G81 x1.1 z-.12 r-.3 f3 ;center drill for #59 hole
> >G81 X0.1 Y0.0 Z-0.1001 R-.3 F3 ;kiss top to mark
> end
> >
> >Since I need to repeat this whole cycle every
> 1.75", I
> >would like to put these 3 lines into a subroutine
> and
> >call them as a unit. Then I just need to move over
> >0.55" from where one ends, and call the routine
> again.
> >
> >
> >My question is: how do I do this? Do I just use an
> >M99 call and then put the 3 lines at the bottom of
> the
> >program and call them by line number? I know this
> is
> >probably simple, but I would appreciate any
> >assistance.
> >
> >Thanks,
> >mike
> >
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