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13-Aquamarine
January 14, 2021
Solved

gpost (apparently) omits first feed rate

  • January 14, 2021
  • 1 reply
  • 4262 views

there appears to be something wrong in my Gpost Config.  The NCL clearly shows the first feed rate, but the posted ngc is missing it.  seems likely to be a problem in gpost. Mine is a simple 3-axis FANUC post modified to work with LinuxCNC which is the controller for my little mill. 

Where would you look for this problem?

 

The NCL File:

$$* Pro/CLfile Version 7.0 - 7.0.0.0
$$-> MFGNO / BALDEHOLDER3
PARTNO / BALDEHOLDER3
$$-> FEATNO / 15355
MACHIN / UNCX01, 33
$$-> CUTCOM_GEOMETRY_TYPE / OUTPUT_ON_CENTER
UNITS / INCHES
LOADTL / 6
$$-> CUTTER / 0.092000
$$-> CSYS / 1.0000000000, 0.0000000000, 0.0000000000, 0.0000000000, $
0.0000000000, 1.0000000000, 0.0000000000, 0.0000000000, $
0.0000000000, 0.0000000000, 1.0000000000, 0.0000000000
SPINDL / RPM, 2600.000000, CLW
FEDRAT / 3.000000, IPM
GOTO / 0.0000000000, 0.0000000000, 1.0000000000
GOTO / 0.6750000000, 0.8718272424, 0.1250000000
CYCLE / DEEP, DEPTH, 0.192640, STEP, 0.009200, IPM, 3.000000, CLEAR,$
0.006000, RETURN, 0.125000
GOTO / 0.6750000000, 0.8718272424, 0.0000000000
GOTO / 0.6750000000, 0.4568272424, 0.0000000000
CYCLE / OFF
FEDRAT / 3.000000, IPM
GOTO / 0.6750000000, 0.4568272424, 1.0000000000
GOTO / 0.0000000000, 0.0000000000, 1.0000000000
$$-> END /
FINI

The ngc File:

(23)
(DATE:01/14/21 TIME:09:06:15)
G0G80G90G17G40G49G98
T06
M6
S2600M3
G1X0.Y0.Z1.
X.675Y.8718Z.125F3.
G83X.675Y.8718Z-.1926R.006Q.0092F3.
Y.4568
G80
G0Z1.
X0.Y0.
M30
%

Best answer by jferguson4

no errors no warnings.  If there's any comfort in any of this, I've found after many years of doing stuff I didn't fully understand that I'll eventually prevail if I remember what I've already tried so as not to go into a loop, and NEVER give up.

 

thanks for keeping an eye on this,

john

1 reply

Community Manager
January 14, 2021

Which product is this?

13-Aquamarine
January 14, 2021

this is done by the Gpost which comes with Creo 7.0 Manufacturing.  I'm pretty certain that problem is something I did in configuring the specific post I'm using because other posts do not omit the feedrate at this location.  I suppose that a person who is pretty familiar with Gpost may recognize where I went wrong.  

21-Topaz II
January 15, 2021

The difficulty is that you are showing people the input (.ncl) file, and the output (.ngc?) file. There are multiple processing steps taken between the two that are the cause of your troubles. Without information about what the settings are for these steps no one is going to be able to determine what's gone awry.

Did you edit the .FIL code (files with name like uncx01.f01, uncx01.f02, etc.) to attempt to do what you need?

Presumably you made some sort of changes to the settings of the post processor via Applications->NC Post Processor. What did you change?

If it were me, I'd compare the setup that's causing problems to one of the others that is working fine, see what is different and try switching the likely suspects and test the results.