Fanuc C-Axis G112 Approach

[Josh T™]

When I post the polar coodinate milling (G112) the Z axis approach is before the start of the contour:

 

quote:

---

( TOOL - 1 OFFSET - 1 )

( FACE CONTOUR 1/2 FLAT ENDMILL )

(3" HEX)

G0 T0101

M23

G0 X4.4944 Z1.

C113.613

G97 S1500 M54

Z.1

G98 G1 Z-.5 F5. <--- here

G98 G1 G112

X-1.8002 C1.559 F7.5

<--- but it should be here

X1.8002

X3.6004 C0.

X1.8002 C-1.559

X-1.8002

X-3.6004 C0.

X-1.8002 C1.559

X-2.6662 C1.809

Z.25 F500.

---

Result is a .500 deep slot in the face of the part.

 

Where in the post can I change the output order? The post is a MPLFAN. Thanks in advance.

[Josh T™]

:BUMP:

 

 

I went with MC recomendations - start at C0. - but this side steps the issue. I still want to change the post output. Anybody?

[Randy Morton @ Clem Industrial]

Workin' on it. =]

[Allan]

The mplfan post with G112 support works like this:

quote:

---

#Polar interpolation, G112 canned cycle:

# Polar interpolation is active only for face cutting (Right or Left).

# Use the Caxis/Face Contour toolpath. Create geometry for the lead in

# and lead out with the start and end position on the View number 3 tool

# axis. All paths must start and end at the 'C0'location for output to

# be correct. Chain the entire geometry without using Mastercam leads.

# Set mi4 to activate!

#

---

Bottom line: Dont use lead in and out parameters, start contour at C0

 

Allan

[Josh T™]

Following MC guidelines - really a post question

[MIL-TFP-41]

quote:

---

Bottom line: Dont use lead in and out parameters, start contour at C0

---

This is something that is messed up. We are not able to use simple cycles such as circle mill, thread mill, ect because of this

[tryon]

Put a point at C0. away from the part. When you chain something chose the point first then the contour or whatever.

[MIL-TFP-41]

tryon,

I just tried that...same result. Can't use lead in /lead out.....

 

And by picking a point in a circle mill toolpath it pretty much messes things up...circle mill works off of points.