RE: [CAD_CAM_EDM_DRO] Re: EMC Continuous Contouring

Andy,

If I remember correctly, the example I provided did not pause going
completely around the circle. I will need to try it again, but best I can
remember it was smooth. I actually need to use this some time over the
weekend to turn the square top of my 7x12 compound slide into a 50mm
diameter circle. The only way I have to do this is with my Sherline mill
and cnc control since the lathe isn't big enough to swing this part mounted
on a face plate. I will let you know how it works if I get a chance to try
it this weekend.

John

> -----Original Message-----
> From: andy@... [mailto:andy@...]
> Sent: Friday, August 03, 2001 3:41 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: EMC Continuous Contouring
>
>
> John - Thanks, I agree a single 360° arc should be smooth, but I am
> concerned that an arbitrary program not pause at any point. Andy
>
> More info : A rectangle with filleted corners appears to go around
> with no pauses, perhaps there is something wierd about starting an
> arc after another arc, or 4 decimal places not enough for a smooth
> transition. Andy
>
>
> --- In CAD_CAM_EDM_DRO@y..., jguenther@v... wrote:
> > Hi Andy,
> >
> > I have used the following command to machine a circle
> >
> > G03 x2.25 y 1.25 i-1.25 j0.00
> >
> > which machines the entire circle without stopping.
> >
> > To generate this code, I drew the circle in cad, exported to dxf
> and used
> > ACE to convert the dxf to g-code. There were some other
> positioning lines
> > in the resulting g-code file, but they were just positioning to the
> proper
> > xy coordinates for the beginning of the circle. This worked
> correctly in
> > EMC.
> >
> > John Guenther
> >
> >
> > > -----Original Message-----
> > > From: andy@o... [mailto:andy@o...]
> > > Sent: Friday, August 03, 2001 2:07 PM
> > > To: CAD_CAM_EDM_DRO@y...
> > > Subject: [CAD_CAM_EDM_DRO] EMC Continuous Contouring
> > >
> > >
> > > Finally have the huge old electric eye burning machine at work
> > > converted. ( BDI EMC, Gecko G340s, Dan Mauch's motors and control
> box)
> > >
> > > It moves - Yeah!
> > >
> > > Now I am trying to do some test circles and have a 4 quadrant
> > > circular move program:
> > >
> > > G90 G64 G20 G40
> > > N10 G01 X0.3686 Y1.1320 Z0.5000
> > > N20 Z0.0000
> > > N30 G03 X3.4236 Y4.1870 I0.0000 J3.0550
> > > N40 X0.3686 Y7.2420 I-3.0550 J0.0000
> > > N50 X-2.6864 Y4.1870 I0.0000 J-3.0550
> > > N60 X0.3686 Y1.1320 I3.0550 J0.0000
> > > N70 G00 Z0.5000
> > > M05
> > > %
> > >
> > > This program pauses at the end of each quadrant, which is no good
> for
> > > a flame cutting machine. I have G64 turned on for continuous
> cutting
> > > mode.
> > >
> > > Any clue as to why it is pausing?
> > >
> > > Andy
> > >
> > >
> > > Addresses:
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> > >
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>
>
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