Need help with Fanuc Post

[Therealplayer]

I would like to change the output positioning of G41 and G40 on the post I am running on MC 8.0 any help I can get with this problem would be appreciated.
Thanx in advance

[tbar2485]

If you could provide examples of what you have and what you want I'm sure it can be done

[Therealplayer]

Thanx for responding to my post. It is difficult to find people who have knowledge of post processor editing.
NC file #1 is the output I get at this time.
NC file #2 is how I would like to see it output.
If you can help me make these changes I would appreciate it very much.
Thanx in advance for any help.

NC FILE #1 (OUT PUT NOW)
%
:0001
(HELP)
(23-01-08 09:12)
N2G0G17G40G49G80G90
(1/4 FLAT)
N3T1M6
N4G0G90G54X-.875Y0.A0.S8500M3
N5G43H1Z1.M8
N6Z.1
N7G1Z-.5F50.
N8G3X0.Y-.875R.875
N9G41D51X.875Y0.R.875
N10X0.Y.875R.875
N11G40X-.875Y0.R.875
N12G0Z1.
N13M5
N14G91G28Z0.M9
N15G28X0.Y0.A0.
N16M30
%

NC FILE #2 (OUT PUT I WOULD LIKE)
:0001
(HELP)
(23-01-08 09:12)
N2G0G17G40G49G80G90
G10L2P1X0Y0Z0
G49G53Z0M5
G53X0Y0
G90M01
(1/4 FLAT ENDMILL)
N3T1M6
N4G0G90G54X-.875Y0.
S8500M3
N5G43H1Z1.M8
N6Z.1
N7G1G41D51Z-.5F50.
N8G3X0.Y-.875R.875
N9X.875Y0.R.875
N10X0.Y.875R.875
N11X-.875Y0.R.875
N12G0Z1.
G40
G49G53Z0
G53X0Y0
M30
%

[tbar2485]

My suggestion, without having to go in and hack up your post, would be when generating a contour use the lead in/out feature.

1. Put a check mark in the Lead In/Out box
2. Click the Lead In/Out Button
3. Select perpindicular line
4. Set the value for the perpindicular line to 1/2 your cutter diameter
5. Set the radius to zero.

What this will do is position the cutter tangent to your profile, and when reading the with cutter comp (G41 or G42) the machine will not make any shift.

The code will still look like it looks but the machine tool function will be the same in how it processes the code.

Personally I like to see cutter comp turn on and off so I typically add .05" to my Lead In/Out move so that when turning on/off cutter comp I see that .05" movement. The radius feature is nice to use also because it eliminates the dwell when the machine changes direction.

I used to think that I needed my code to be perfect, when the reality is it just needs to function so that the machine does what I want it to and when.

I hope this helps.

Tom