--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Troy,
>  
> That sure is strange.  But obvious and consistent so we should be able to figure it out.
>  
> Could you post the GCode you are using.
>  
> You are using Mach3?
>  
> I think you are running closed loop with glass scales?
>  
> Could you turn the feed rate down super slow and record the KMotion | Axis Screen | Destinations and Positions to see if those are correct or incorrect?
>  
> Thanks
> TK
>
>
> --- On Sun, 7/24/11, tmday7 <tmday@...> wrote:
>
>
> From: tmday7 <tmday@...>
> Subject: [DynoMotion] Milling of center
> To: DynoMotion@yahoogroups.com
> Date: Sunday, July 24, 2011, 7:31 PM
>
>
>  
>
>
>
> Hello Tom,
> I have a problem with my mill, its milling off center of the X, Y zero. Found this out a couple days ago when trying to mill 3 flats 120degress, on a .375 diameter rod.
>
> Machine has been off for about a week or more. Only recent changes i can think of is updating to latest Dynomotion Version right after you posted it, and i had no problems then.
>
> I have tried a couple different setups and re zeroing, but still is off center. But when positioning back to the center of part,X0, Y0, its within .001 in XandY.
>
> Look at picture and you will see an example.I drilled a .1875 hole and milled a .375 diameter circle, which is now under size because i took 2 small finish passes. The diameter is within .0015 round. The circle is offset by .025 on the X axis, appears to be happening only on X axis.
>
> http://groups.yahoo.com/group/DynoMotion/photos/album/176979248/pic/644183141/view?picmode=&mode=tn&order=ordinal&start=21&count=20&dir=asc
>
> Any ideas?
>
> Thanks,
> Troy
>

--- In DynoMotion@yahoogroups.com, "tmday7" <tmday@...> wrote:
>
> Yes, using Mach3 and Closed loop with glass scales.
> Here is what i recorded.
>
> Axis# Dest Pos
> 0 18762.50 18759
> 1 -36563.15 -36567
> 2 -57267.16 -57266
>
> Mach3 Command GlassScale
> X -.3925 -.3927
> y .0001 0.0000
> Z -.1000 -.1001
>
> Here is Gcode of a circle mill.
> G80 G90
> G20 (Inch)
> M6 T1(.500)
> M03 S2000
> M8 (Flood On)
> G00 X0.9125 Y0.375
> G41
> G01 X0.5375 F3.
> G03 X0.1625 Y0 R0.375
> G00 Z0.1
> F3
> G02 X-0.1625 Y0 R0.1625 Z-0.05
> X0.1625 Y0 R0.1625 Z-0.1
> X-0.1625 Y0 R0.1625
> X0.1625 Y0 R0.1625
> G00 Z0.1
> G03 X0.5375 Y-0.375 R0.375
> G00 X0.9125 Y-0.375
> G40
> M5 M9
> G40
> G28
> M30
>
> Let me know.
> Thanks,
> Troy
>
> --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> >
> > Hi Troy,
> >  
> > That sure is strange.  But obvious and consistent so we should be able to figure it out.
> >  
> > Could you post the GCode you are using.
> >  
> > You are using Mach3?
> >  
> > I think you are running closed loop with glass scales?
> >  
> > Could you turn the feed rate down super slow and record the KMotion | Axis Screen | Destinations and Positions to see if those are correct or incorrect?
> >  
> > Thanks
> > TK
> >
> >
> > --- On Sun, 7/24/11, tmday7 <tmday@> wrote:
> >
> >
> > From: tmday7 <tmday@>
> > Subject: [DynoMotion] Milling of center
> > To: DynoMotion@yahoogroups.com
> > Date: Sunday, July 24, 2011, 7:31 PM
> >
> >
> >  
> >
> >
> >
> > Hello Tom,
> > I have a problem with my mill, its milling off center of the X, Y zero. Found this out a couple days ago when trying to mill 3 flats 120degress, on a .375 diameter rod.
> >
> > Machine has been off for about a week or more. Only recent changes i can think of is updating to latest Dynomotion Version right after you posted it, and i had no problems then.
> >
> > I have tried a couple different setups and re zeroing, but still is off center. But when positioning back to the center of part,X0, Y0, its within .001 in XandY.
> >
> > Look at picture and you will see an example.I drilled a .1875 hole and milled a .375 diameter circle, which is now under size because i took 2 small finish passes. The diameter is within .0015 round. The circle is offset by .025 on the X axis, appears to be happening only on X axis.
> >
> > http://groups.yahoo.com/group/DynoMotion/photos/album/176979248/pic/644183141/view?picmode=&mode=tn&order=ordinal&start=21&count=20&dir=asc
> >
> > Any ideas?
> >
> > Thanks,
> > Troy
> >
>

--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Troy,
>  
> Sorry I started to look at it but couldn't figure it out yet.  I ran it under KMotionCNC and didn't see a problem.  I was expecting you to record the DROs at multiple places and state at what point they were recorded:  ie At Center Hole, Right side of circle, Left Side of Circle...
>  
> But I did notice one thing.  You are supposedly specifying a G41 tool width compensation of Diameter = 0.5 inches? 
>  
> So then the leftmost right most points on the main circle with R=0.1625 should be:
>  
> -0.1625 - 0.5/2 = -0.4125
> and
>  0.1625 + 0.5/2 = 0.4125
>  
> But you recorded -.3925 ??
>  
> Which is different by 0.02 ??
>  
> TK
>
> --- On Mon, 7/25/11, tmday7 <tmday@...> wrote:
>
>
> From: tmday7 <tmday@...>
> Subject: [DynoMotion] Re: Milling of center
> To: DynoMotion@yahoogroups.com
> Date: Monday, July 25, 2011, 3:56 PM
>
>
>  
>
>
>
> Tom,
> Did you get a chance to look at this?
> Troy
>
> --- In DynoMotion@yahoogroups.com, "tmday7" <tmday@> wrote:
> >
> > Yes, using Mach3 and Closed loop with glass scales.
> > Here is what i recorded.
> >
> > Axis# Dest Pos
> > 0 18762.50 18759
> > 1 -36563.15 -36567
> > 2 -57267.16 -57266
> >
> > Mach3 Command GlassScale
> > X -.3925 -.3927
> > y .0001 0.0000
> > Z -.1000 -.1001
> >
> > Here is Gcode of a circle mill.
> > G80 G90
> > G20 (Inch)
> > M6 T1(.500)
> > M03 S2000
> > M8 (Flood On)
> > G00 X0.9125 Y0.375
> > G41
> > G01 X0.5375 F3.
> > G03 X0.1625 Y0 R0.375
> > G00 Z0.1
> > F3
> > G02 X-0.1625 Y0 R0.1625 Z-0.05
> > X0.1625 Y0 R0.1625 Z-0.1
> > X-0.1625 Y0 R0.1625
> > X0.1625 Y0 R0.1625
> > G00 Z0.1
> > G03 X0.5375 Y-0.375 R0.375
> > G00 X0.9125 Y-0.375
> > G40
> > M5 M9
> > G40
> > G28
> > M30
> >
> > Let me know.
> > Thanks,
> > Troy
> >
> > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > >
> > > Hi Troy,
> > >  
> > > That sure is strange.  But obvious and consistent so we should be able to figure it out.
> > >  
> > > Could you post the GCode you are using.
> > >  
> > > You are using Mach3?
> > >  
> > > I think you are running closed loop with glass scales?
> > >  
> > > Could you turn the feed rate down super slow and record the KMotion | Axis Screen | Destinations and Positions to see if those are correct or incorrect?
> > >  
> > > Thanks
> > > TK
> > >
> > >
> > > --- On Sun, 7/24/11, tmday7 <tmday@> wrote:
> > >
> > >
> > > From: tmday7 <tmday@>
> > > Subject: [DynoMotion] Milling of center
> > > To: DynoMotion@yahoogroups.com
> > > Date: Sunday, July 24, 2011, 7:31 PM
> > >
> > >
> > >  
> > >
> > >
> > >
> > > Hello Tom,
> > > I have a problem with my mill, its milling off center of the X, Y zero. Found this out a couple days ago when trying to mill 3 flats 120degress, on a .375 diameter rod.
> > >
> > > Machine has been off for about a week or more. Only recent changes i can think of is updating to latest Dynomotion Version right after you posted it, and i had no problems then.
> > >
> > > I have tried a couple different setups and re zeroing, but still is off center. But when positioning back to the center of part,X0, Y0, its within .001 in XandY.
> > >
> > > Look at picture and you will see an example.I drilled a .1875 hole and milled a .375 diameter circle, which is now under size because i took 2 small finish passes. The diameter is within .0015 round. The circle is offset by .025 on the X axis, appears to be happening only on X axis.
> > >
> > > http://groups.yahoo.com/group/DynoMotion/photos/album/176979248/pic/644183141/view?picmode=&mode=tn&order=ordinal&start=21&count=20&dir=asc
> > >
> > > Any ideas?
> > >
> > > Thanks,
> > > Troy
> > >
> >
>

--- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@...> wrote:
>
> Hi Troy,
>  
> Could you run the simplified GCode (without the Tool Comp) again and record the DROs when at the center and on the right and then on the left sides of the circles.
>  
> Then please provide us the same GCode that was used when recording the measurements as it does matter what the radius is if we are comparing absolute positions on the circle.
>  
> I'm hard pressed to imaging how it can be on our end as Mach3 just provides "ring buffer" points in counts or steps to move to and we really don't know if we are drilling a hole or moving along a circle.  But I've been wrong before :}
>  
> Thanks
> TK 
>  
>  
>
> --- On Mon, 7/25/11, tmday7 <tmday@...> wrote:
>
>
> From: tmday7 <tmday@...>
> Subject: [DynoMotion] Re: Milling of center
> To: DynoMotion@yahoogroups.com
> Date: Monday, July 25, 2011, 4:24 PM
>
>
>  
>
>
>
> In my tool offsets i set the tool diameter to smaller so i could take a clean up pass. But that dont matter as the circle is on size, its just Off Center.
>
> All recordings was at far left, in the direction the offset is happening, just like the picture i posted.
>
> I did another test today with no cutter comp on a .500 diameter circle. And got the same results, the circle is Off center.
>
> Troy
>
> --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> >
> > Hi Troy,
> >  
> > Sorry I started to look at it but couldn't figure it out yet.  I ran it under KMotionCNC and didn't see a problem.  I was expecting you to record the DROs at multiple places and state at what point they were recorded:  ie At Center Hole, Right side of circle, Left Side of Circle...
> >  
> > But I did notice one thing.  You are supposedly specifying a G41 tool width compensation of Diameter = 0.5 inches? 
> >  
> > So then the leftmost right most points on the main circle with R=0.1625 should be:
> >  
> > -0.1625 - 0.5/2 = -0.4125
> > and
> >  0.1625 + 0.5/2 = 0.4125
> >  
> > But you recorded -.3925 ??
> >  
> > Which is different by 0.02 ??
> >  
> > TK
> >
> > --- On Mon, 7/25/11, tmday7 <tmday@> wrote:
> >
> >
> > From: tmday7 <tmday@>
> > Subject: [DynoMotion] Re: Milling of center
> > To: DynoMotion@yahoogroups.com
> > Date: Monday, July 25, 2011, 3:56 PM
> >
> >
> >  
> >
> >
> >
> > Tom,
> > Did you get a chance to look at this?
> > Troy
> >
> > --- In DynoMotion@yahoogroups.com, "tmday7" <tmday@> wrote:
> > >
> > > Yes, using Mach3 and Closed loop with glass scales.
> > > Here is what i recorded.
> > >
> > > Axis# Dest Pos
> > > 0 18762.50 18759
> > > 1 -36563.15 -36567
> > > 2 -57267.16 -57266
> > >
> > > Mach3 Command GlassScale
> > > X -.3925 -.3927
> > > y .0001 0.0000
> > > Z -.1000 -.1001
> > >
> > > Here is Gcode of a circle mill.
> > > G80 G90
> > > G20 (Inch)
> > > M6 T1(.500)
> > > M03 S2000
> > > M8 (Flood On)
> > > G00 X0.9125 Y0.375
> > > G41
> > > G01 X0.5375 F3.
> > > G03 X0.1625 Y0 R0.375
> > > G00 Z0.1
> > > F3
> > > G02 X-0.1625 Y0 R0.1625 Z-0.05
> > > X0.1625 Y0 R0.1625 Z-0.1
> > > X-0.1625 Y0 R0.1625
> > > X0.1625 Y0 R0.1625
> > > G00 Z0.1
> > > G03 X0.5375 Y-0.375 R0.375
> > > G00 X0.9125 Y-0.375
> > > G40
> > > M5 M9
> > > G40
> > > G28
> > > M30
> > >
> > > Let me know.
> > > Thanks,
> > > Troy
> > >
> > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > >
> > > > Hi Troy,
> > > >  
> > > > That sure is strange.  But obvious and consistent so we should be able to figure it out.
> > > >  
> > > > Could you post the GCode you are using.
> > > >  
> > > > You are using Mach3?
> > > >  
> > > > I think you are running closed loop with glass scales?
> > > >  
> > > > Could you turn the feed rate down super slow and record the KMotion | Axis Screen | Destinations and Positions to see if those are correct or incorrect?
> > > >  
> > > > Thanks
> > > > TK
> > > >
> > > >
> > > > --- On Sun, 7/24/11, tmday7 <tmday@> wrote:
> > > >
> > > >
> > > > From: tmday7 <tmday@>
> > > > Subject: [DynoMotion] Milling of center
> > > > To: DynoMotion@yahoogroups.com
> > > > Date: Sunday, July 24, 2011, 7:31 PM
> > > >
> > > >
> > > >  
> > > >
> > > >
> > > >
> > > > Hello Tom,
> > > > I have a problem with my mill, its milling off center of the X, Y zero. Found this out a couple days ago when trying to mill 3 flats 120degress, on a .375 diameter rod.
> > > >
> > > > Machine has been off for about a week or more. Only recent changes i can think of is updating to latest Dynomotion Version right after you posted it, and i had no problems then.
> > > >
> > > > I have tried a couple different setups and re zeroing, but still is off center. But when positioning back to the center of part,X0, Y0, its within .001 in XandY.
> > > >
> > > > Look at picture and you will see an example.I drilled a .1875 hole and milled a .375 diameter circle, which is now under size because i took 2 small finish passes. The diameter is within .0015 round. The circle is offset by .025 on the X axis, appears to be happening only on X axis.
> > > >
> > > > http://groups.yahoo.com/group/DynoMotion/photos/album/176979248/pic/644183141/view?picmode=&mode=tn&order=ordinal&start=21&count=20&dir=asc
> > > >
> > > > Any ideas?
> > > >
> > > > Thanks,
> > > > Troy
> > > >
> > >
> >
>

>
> Hi Troy,
>  
> Very very bizarre.  The data all looks perfect.  Taking the midpoint of the top, bottom, left, right I get the center point.  Also delta right-left and top-bottom is 1 inch or 15000 counts.  Even looking at the Position which is the raw glass scale encoder position.  That would indicate something wrong with the glass scale measurement.  But typically encoder errors will result in accumulated drift so going back to zero wouldn't repeat.  The only scenario that I can think of (and this is unlikely) might be that the rapid move out to the circle perimeter looses counts for some reason.  Then the slower circle counts correctly.  Then if you are doing a rapid move back to center and a similar number of counts are lost then the center would repeat.  You could test that theory by just doing a rapid move and then a slow move back and check if the tool repeats to the original position.  Another test might be to run the job open loop steppers to
> eliminate the encoder as the issue.  Hang in there :}
>
> TK
>
> --- On Mon, 7/25/11, tmday7 <tmday@...> wrote:
>
>
> From: tmday7 <tmday@...>
> Subject: [DynoMotion] Re: Milling of center
> To: DynoMotion@yahoogroups.com
> Date: Monday, July 25, 2011, 9:09 PM
>
>
>  
>
>
>
> Iam starting to wonder myself. Starting to get the best of my patience.:) Need a rest from it, probably overlooking something.
>
> Here is GCODE (d2test.txt) and recorded postions.(DEST POS.txt)
> http://tech.groups.yahoo.com/group/DynoMotion/files/KFLOP%20MillDrill/
>
> Thanks again,
> Troy
>
> --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> >
> > Hi Troy,
> >  
> > Could you run the simplified GCode (without the Tool Comp) again and record the DROs when at the center and on the right and then on the left sides of the circles.
> >  
> > Then please provide us the same GCode that was used when recording the measurements as it does matter what the radius is if we are comparing absolute positions on the circle.
> >  
> > I'm hard pressed to imaging how it can be on our end as Mach3 just provides "ring buffer" points in counts or steps to move to and we really don't know if we are drilling a hole or moving along a circle.  But I've been wrong before :}
> >  
> > Thanks
> > TK 
> >  
> >  
> >
> > --- On Mon, 7/25/11, tmday7 <tmday@> wrote:
> >
> >
> > From: tmday7 <tmday@>
> > Subject: [DynoMotion] Re: Milling of center
> > To: DynoMotion@yahoogroups.com
> > Date: Monday, July 25, 2011, 4:24 PM
> >
> >
> >  
> >
> >
> >
> > In my tool offsets i set the tool diameter to smaller so i could take a clean up pass. But that dont matter as the circle is on size, its just Off Center.
> >
> > All recordings was at far left, in the direction the offset is happening, just like the picture i posted.
> >
> > I did another test today with no cutter comp on a .500 diameter circle. And got the same results, the circle is Off center.
> >
> > Troy
> >
> > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > >
> > > Hi Troy,
> > >  
> > > Sorry I started to look at it but couldn't figure it out yet.  I ran it under KMotionCNC and didn't see a problem.  I was expecting you to record the DROs at multiple places and state at what point they were recorded:  ie At Center Hole, Right side of circle, Left Side of Circle...
> > >  
> > > But I did notice one thing.  You are supposedly specifying a G41 tool width compensation of Diameter = 0.5 inches? 
> > >  
> > > So then the leftmost right most points on the main circle with R=0.1625 should be:
> > >  
> > > -0.1625 - 0.5/2 = -0.4125
> > > and
> > >  0.1625 + 0.5/2 = 0.4125
> > >  
> > > But you recorded -.3925 ??
> > >  
> > > Which is different by 0.02 ??
> > >  
> > > TK
> > >
> > > --- On Mon, 7/25/11, tmday7 <tmday@> wrote:
> > >
> > >
> > > From: tmday7 <tmday@>
> > > Subject: [DynoMotion] Re: Milling of center
> > > To: DynoMotion@yahoogroups.com
> > > Date: Monday, July 25, 2011, 3:56 PM
> > >
> > >
> > >  
> > >
> > >
> > >
> > > Tom,
> > > Did you get a chance to look at this?
> > > Troy
> > >
> > > --- In DynoMotion@yahoogroups.com, "tmday7" <tmday@> wrote:
> > > >
> > > > Yes, using Mach3 and Closed loop with glass scales.
> > > > Here is what i recorded.
> > > >
> > > > Axis# Dest Pos
> > > > 0 18762.50 18759
> > > > 1 -36563.15 -36567
> > > > 2 -57267.16 -57266
> > > >
> > > > Mach3 Command GlassScale
> > > > X -.3925 -.3927
> > > > y .0001 0.0000
> > > > Z -.1000 -.1001
> > > >
> > > > Here is Gcode of a circle mill.
> > > > G80 G90
> > > > G20 (Inch)
> > > > M6 T1(.500)
> > > > M03 S2000
> > > > M8 (Flood On)
> > > > G00 X0.9125 Y0.375
> > > > G41
> > > > G01 X0.5375 F3.
> > > > G03 X0.1625 Y0 R0.375
> > > > G00 Z0.1
> > > > F3
> > > > G02 X-0.1625 Y0 R0.1625 Z-0.05
> > > > X0.1625 Y0 R0.1625 Z-0.1
> > > > X-0.1625 Y0 R0.1625
> > > > X0.1625 Y0 R0.1625
> > > > G00 Z0.1
> > > > G03 X0.5375 Y-0.375 R0.375
> > > > G00 X0.9125 Y-0.375
> > > > G40
> > > > M5 M9
> > > > G40
> > > > G28
> > > > M30
> > > >
> > > > Let me know.
> > > > Thanks,
> > > > Troy
> > > >
> > > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > > >
> > > > > Hi Troy,
> > > > > ÃÆ'‚ 
> > > > > That sure is strange.ÃÆ'‚  But obvious and consistent so we should be able to figure it out.
> > > > > ÃÆ'‚ 
> > > > > Could youÃÆ'‚ post the GCode you are using.
> > > > > ÃÆ'‚ 
> > > > > You are using Mach3?
> > > > > ÃÆ'‚ 
> > > > > I think you are running closed loop with glass scales?
> > > > > ÃÆ'‚ 
> > > > > Could you turn the feed rate down super slow and record the KMotion | Axis Screen | Destinations and Positions to see if those are correct or incorrect?
> > > > > ÃÆ'‚ 
> > > > > Thanks
> > > > > TK
> > > > >
> > > > >
> > > > > --- On Sun, 7/24/11, tmday7 <tmday@> wrote:
> > > > >
> > > > >
> > > > > From: tmday7 <tmday@>
> > > > > Subject: [DynoMotion] Milling of center
> > > > > To: DynoMotion@yahoogroups.com
> > > > > Date: Sunday, July 24, 2011, 7:31 PM
> > > > >
> > > > >
> > > > > ÃÆ'‚ 
> > > > >
> > > > >
> > > > >
> > > > > Hello Tom,
> > > > > I have a problem with my mill, its milling off center of the X, Y zero. Found this out a couple days ago when trying to mill 3 flats 120degress, on a .375 diameter rod.
> > > > >
> > > > > Machine has been off for about a week or more. Only recent changes i can think of is updating to latest Dynomotion Version right after you posted it, and i had no problems then.
> > > > >
> > > > > I have tried a couple different setups and re zeroing, but still is off center. But when positioning back to the center of part,X0, Y0, its within .001 in XandY.
> > > > >
> > > > > Look at picture and you will see an example.I drilled a .1875 hole and milled a .375 diameter circle, which is now under size because i took 2 small finish passes. The diameter is within .0015 round. The circle is offset by .025 on the X axis, appears to be happening only on X axis.
> > > > >
> > > > > http://groups.yahoo.com/group/DynoMotion/photos/album/176979248/pic/644183141/view?picmode=&mode=tn&order=ordinal&start=21&count=20&dir=asc
> > > > >
> > > > > Any ideas?
> > > > >
> > > > > Thanks,
> > > > > Troy
> > > > >
> > > >
> > >
> >
>

--- In DynoMotion@yahoogroups.com, "tmday7" <tmday@...> wrote:
>
> I tried a slow move to X0Y0 of 10 IPM and tool repeats within .002 on Y and .001 on X.
>
> After this i ran a cut with Closed Loop Off and the circle still cuts Offset in same direction.
>
> I have a laptop with a PPORT to try next. Ill let you know.
> Troy
>
> --- Tom Kerekes wrote:
> >
> > Hi Troy,
> >  
> > Very very bizarre.  The data all looks perfect.  Taking the midpoint of the top, bottom, left, right I get the center point.  Also delta right-left and top-bottom is 1 inch or 15000 counts.  Even looking at the Position which is the raw glass scale encoder position.  That would indicate something wrong with the glass scale measurement.  But typically encoder errors will result in accumulated drift so going back to zero wouldn't repeat.  The only scenario that I can think of (and this is unlikely) might be that the rapid move out to the circle perimeter looses counts for some reason.  Then the slower circle counts correctly.  Then if you are doing a rapid move back to center and a similar number of counts are lost then the center would repeat.  You could test that theory by just doing a rapid move and then a slow move back and check if the tool repeats to the original position.  Another test might be to run the job open loop steppers to
> > eliminate the encoder as the issue.  Hang in there :}
> >
> > TK
> >
> > --- On Mon, 7/25/11, tmday7 <tmday@> wrote:
> >
> >
> > From: tmday7 <tmday@>
> > Subject: [DynoMotion] Re: Milling of center
> > To: DynoMotion@yahoogroups.com
> > Date: Monday, July 25, 2011, 9:09 PM
> >
> >
> >  
> >
> >
> >
> > Iam starting to wonder myself. Starting to get the best of my patience.:) Need a rest from it, probably overlooking something.
> >
> > Here is GCODE (d2test.txt) and recorded postions.(DEST POS.txt)
> > http://tech.groups.yahoo.com/group/DynoMotion/files/KFLOP%20MillDrill/
> >
> > Thanks again,
> > Troy
> >
> > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > >
> > > Hi Troy,
> > >  
> > > Could you run the simplified GCode (without the Tool Comp) again and record the DROs when at the center and on the right and then on the left sides of the circles.
> > >  
> > > Then please provide us the same GCode that was used when recording the measurements as it does matter what the radius is if we are comparing absolute positions on the circle.
> > >  
> > > I'm hard pressed to imaging how it can be on our end as Mach3 just provides "ring buffer" points in counts or steps to move to and we really don't know if we are drilling a hole or moving along a circle.  But I've been wrong before :}
> > >  
> > > Thanks
> > > TK 
> > >  
> > >  
> > >
> > > --- On Mon, 7/25/11, tmday7 <tmday@> wrote:
> > >
> > >
> > > From: tmday7 <tmday@>
> > > Subject: [DynoMotion] Re: Milling of center
> > > To: DynoMotion@yahoogroups.com
> > > Date: Monday, July 25, 2011, 4:24 PM
> > >
> > >
> > >  
> > >
> > >
> > >
> > > In my tool offsets i set the tool diameter to smaller so i could take a clean up pass. But that dont matter as the circle is on size, its just Off Center.
> > >
> > > All recordings was at far left, in the direction the offset is happening, just like the picture i posted.
> > >
> > > I did another test today with no cutter comp on a .500 diameter circle. And got the same results, the circle is Off center.
> > >
> > > Troy
> > >
> > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > >
> > > > Hi Troy,
> > > >  
> > > > Sorry I started to look at it but couldn't figure it out yet.  I ran it under KMotionCNC and didn't see a problem.  I was expecting you to record the DROs at multiple places and state at what point they were recorded:  ie At Center Hole, Right side of circle, Left Side of Circle...
> > > >  
> > > > But I did notice one thing.  You are supposedly specifying a G41 tool width compensation of Diameter = 0.5 inches? 
> > > >  
> > > > So then the leftmost right most points on the main circle with R=0.1625 should be:
> > > >  
> > > > -0.1625 - 0.5/2 = -0.4125
> > > > and
> > > >  0.1625 + 0.5/2 = 0.4125
> > > >  
> > > > But you recorded -.3925 ??
> > > >  
> > > > Which is different by 0.02 ??
> > > >  
> > > > TK
> > > >
> > > > --- On Mon, 7/25/11, tmday7 <tmday@> wrote:
> > > >
> > > >
> > > > From: tmday7 <tmday@>
> > > > Subject: [DynoMotion] Re: Milling of center
> > > > To: DynoMotion@yahoogroups.com
> > > > Date: Monday, July 25, 2011, 3:56 PM
> > > >
> > > >
> > > >  
> > > >
> > > >
> > > >
> > > > Tom,
> > > > Did you get a chance to look at this?
> > > > Troy
> > > >
> > > > --- In DynoMotion@yahoogroups.com, "tmday7" <tmday@> wrote:
> > > > >
> > > > > Yes, using Mach3 and Closed loop with glass scales.
> > > > > Here is what i recorded.
> > > > >
> > > > > Axis# Dest Pos
> > > > > 0 18762.50 18759
> > > > > 1 -36563.15 -36567
> > > > > 2 -57267.16 -57266
> > > > >
> > > > > Mach3 Command GlassScale
> > > > > X -.3925 -.3927
> > > > > y .0001 0.0000
> > > > > Z -.1000 -.1001
> > > > >
> > > > > Here is Gcode of a circle mill.
> > > > > G80 G90
> > > > > G20 (Inch)
> > > > > M6 T1(.500)
> > > > > M03 S2000
> > > > > M8 (Flood On)
> > > > > G00 X0.9125 Y0.375
> > > > > G41
> > > > > G01 X0.5375 F3.
> > > > > G03 X0.1625 Y0 R0.375
> > > > > G00 Z0.1
> > > > > F3
> > > > > G02 X-0.1625 Y0 R0.1625 Z-0.05
> > > > > X0.1625 Y0 R0.1625 Z-0.1
> > > > > X-0.1625 Y0 R0.1625
> > > > > X0.1625 Y0 R0.1625
> > > > > G00 Z0.1
> > > > > G03 X0.5375 Y-0.375 R0.375
> > > > > G00 X0.9125 Y-0.375
> > > > > G40
> > > > > M5 M9
> > > > > G40
> > > > > G28
> > > > > M30
> > > > >
> > > > > Let me know.
> > > > > Thanks,
> > > > > Troy
> > > > >
> > > > > --- In DynoMotion@yahoogroups.com, Tom Kerekes <tk@> wrote:
> > > > > >
> > > > > > Hi Troy,
> > > > > > ÃÆ'‚ 
> > > > > > That sure is strange.ÃÆ'‚  But obvious and consistent so we should be able to figure it out.
> > > > > > ÃÆ'‚ 
> > > > > > Could youÃÆ'‚ post the GCode you are using.
> > > > > > ÃÆ'‚ 
> > > > > > You are using Mach3?
> > > > > > ÃÆ'‚ 
> > > > > > I think you are running closed loop with glass scales?
> > > > > > ÃÆ'‚ 
> > > > > > Could you turn the feed rate down super slow and record the KMotion | Axis Screen | Destinations and Positions to see if those are correct or incorrect?
> > > > > > ÃÆ'‚ 
> > > > > > Thanks
> > > > > > TK
> > > > > >
> > > > > >
> > > > > > --- On Sun, 7/24/11, tmday7 <tmday@> wrote:
> > > > > >
> > > > > >
> > > > > > From: tmday7 <tmday@>
> > > > > > Subject: [DynoMotion] Milling of center
> > > > > > To: DynoMotion@yahoogroups.com
> > > > > > Date: Sunday, July 24, 2011, 7:31 PM
> > > > > >
> > > > > >
> > > > > > ÃÆ'‚ 
> > > > > >
> > > > > >
> > > > > >
> > > > > > Hello Tom,
> > > > > > I have a problem with my mill, its milling off center of the X, Y zero. Found this out a couple days ago when trying to mill 3 flats 120degress, on a .375 diameter rod.
> > > > > >
> > > > > > Machine has been off for about a week or more. Only recent changes i can think of is updating to latest Dynomotion Version right after you posted it, and i had no problems then.
> > > > > >
> > > > > > I have tried a couple different setups and re zeroing, but still is off center. But when positioning back to the center of part,X0, Y0, its within .001 in XandY.
> > > > > >
> > > > > > Look at picture and you will see an example.I drilled a .1875 hole and milled a .375 diameter circle, which is now under size because i took 2 small finish passes. The diameter is within .0015 round. The circle is offset by .025 on the X axis, appears to be happening only on X axis.
> > > > > >
> > > > > > http://groups.yahoo.com/group/DynoMotion/photos/album/176979248/pic/644183141/view?picmode=&mode=tn&order=ordinal&start=21&count=20&dir=asc
> > > > > >
> > > > > > Any ideas?
> > > > > >
> > > > > > Thanks,
> > > > > > Troy
> > > > > >
> > > > >
> > > >
> > >
> >
>