View previous topic :: View next topic |
Author |
Message |
JoeM Master Poster
Joined: 09 Jul 2004 Posts: 122 Location: Jackson Hole, Wyoming USA
|
Posted: Tue Nov 01, 2005 9:32 pm Post subject: 1/2-14 Npt Id G Code |
|
|
Need to cut 1/2-14 npt ID in ss316 would like to use g76 I have fanuc ot control
G76 p ? 010160 Q? R?
G76 X.? Z-.? R.? P.? Q? F=.0714
CAN ANY BODY HELP WITH THE ? or do you have a good program is the taper 1.333. Can you explane the p(01)(01)(60)on first G76 line. thanks _________________ Thanks.
===================
I would rather by Fly Fishing! |
|
Back to top |
|
|
BillyB Frequent Poster
Joined: 27 Jul 2005 Posts: 60 Location: Lexington, KY, USA
|
Posted: Tue Nov 01, 2005 9:33 pm Post subject: |
|
|
Hope this does it for you.
(TURN_TO)
(X.8022)
(X.84W.6062(or A1.78333))
T0101G97S980
G0X.9355Z.05
G4U.5
G76P010015Q.003R.001
G76X.7479Z.5337P.0438Q.013F.07142R-.0182
G0X.9355
The first G76 isn't needed but is recommended.
- G76 P Q R
P010010 sets 3 things
- first 2 digits is the amount of finish passes - 01
- second 2 digits is % of the lead or pullout exiting the thread- 00
00 = almost no angle at pullout and 99 = 9.9 leads away start out
- third 2 digits are the angle of infeed - 10
0-99 are usable
Q.002 sets the minimum cut amount during threading
R.0005 sets the cut amount of the last pass
The second G76 cuts the thread.
-G76 X.1876 Z.3 P.0302 Q.01 F.05 (R-.002) FOR 1/4-20
X.1876 =Minor Dia. of thread
Z.3 or (W) =The ending Z of the thread
P.0302 =Height of thread in radius (Maj-Min)/2
Q.01 =Amount of the first cut. All the rest of the cuts are calculated.
F.05 =Feed-rate 20 TPI 1/20=.05
R = R is optional for tapered threading. R is the amount of difference in X from start to finish in Z. When cutting threads moving Z and X in a positive direction R is a negative value. _________________ I'd rather be making chairs. |
|
Back to top |
|
|
|