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Rage rising!! (Mystery Men Quote)
« on: June 20, 2006, 03:09:54 AM »
Ok, I really need your help on this one.  I'm considered new so to the experts this is a no brainer.

I'm having issues with Mach 3 going at the beat of it's own drumer.  By that I mean, I set the feed rate at 3, and Mach runs at 90-105 ipm in the blended feed rate.  I've included a small bit of my code:

N7079 X12.498 Y1.1121
N7081 Z0.3000
N7083 M5
(1/8" Pocketing)
N7087 G00 X0 Y0 Z2 M06 T3
N7091 X16.8875 Y8.974 Z0.2500 S10000 M3
N7093 Z0.0500 F6.0 G99
N7095 Y8.9706 Z0.0491 F3.0 G99
N7097 X16.8742 Z0.0455
N7099 X16.8691 Y8.9716 Z0.0441

This isn't a once in awhile thing, it's every time.  As you can see, feed rates are 6 and 3.  What I get is over 100 ipm.  Now I don't have to tell you how much fun it is to break the carbide (expensive) bit every time it does this.

So what am I doing wrong?  In the FR window it says 3.0.  In the FRO it says .16.  In the blended FR is see 90-105ipm.

I'm running 1.90.050.  The feed rate before this tool was 27ipm, all ran well.  Is it the rapid feed over to my tool change position a problem?  Is it the G99 code?

Thank you for your time.
« Last Edit: June 20, 2006, 03:30:49 AM by borrisl »

Offline Graham Waterworth

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Re: Rage rising!! (Mystery Men Quote)
« Reply #1 on: June 20, 2006, 05:01:49 AM »
Hi,

I think you need to remove the G99 and insert G01

G99 is normally only used in canned cycles e.g. G81, G82 Etc.

Graham.

N7079 X12.498 Y1.1121
N7081 Z0.3000
N7083 M5
(1/8" Pocketing)
N7087 G00 X0 Y0 Z2 M06 T3
N7091 X16.8875 Y8.974 Z0.2500 S10000 M3
N7093 G01 Z0.0500 F6.0
N7095 Y8.9706 Z0.0491 F3.0
N7097 X16.8742 Z0.0455
N7099 X16.8691 Y8.9716 Z0.0441
Without engineers the world stops