Dupa3872
Stainless
- Joined
- May 1, 2007
- Location
- Boston Hyde park Ma.
Guy's,
I have another thread, Ha Ha up about this machine and this cycle but it may have run it's course so I'm starting fresh with another.
I bought two identical Hurco TM6 CNC lathes. We only program our work in Master Cam and will not be using the Hurco's programing side. Turns out one of the machines will only thread using a G78 cycle witch I am told is similar to the Fanuc G76 cycle.
Other than standard drill cycles we do not use canned cycles and are a bit lost using this G78. If you have a Hurco and use G78 for O.D. and I.D. threads I would be grateful if you would post a copy of your code for a 5/8-20 OD thread and perhaps one for an ID thread.
We have been messing around losing valuable time on jobs for a few days now and really need some help.
Thanks
Ron
This is the sample we have been trying to tweak to work on a 5/8-20 thread by changing the numbers. This sample is Metric and some of the numbers don't make sense to us.
G78 Threading Cycle Format
G78 P010060 Q100 R0.05
G78 X30 Z-20 P1024 Q200 F2
First block of the G78 Threading cycle
G78 : G code for threading cycle.
P : P actually consists of multiple values which control the thread behavior,
01 : Number of spring passes or spring cuts or finishing cuts.
00 : Thread run out.
60 : Flank angle or Infeed angle (allowed values 0, 29, 30, 56, 60, 80).
Q : Depth of cut.
R : Depth of Finish cut
Second block of the G78 Threading cycle
G78 : G code of the threading cycle.
X (U) : The end value in x-axis.
Z (W) : The end value in z-axis.
P : Thread depth ( as radius value ).
Q : Depth of first cut.
F : Thread Pitch
R : Thread Taper
N17 T101
N18 G54
N19 G97 S800 M3
N20 G0 X32 Z6 M8
N21 G76 P010060 Q100 R0.02
N22 G76 X28.161 Z-50 P919 Q250 F1.5
N23 G0 X150 Z100
I have another thread, Ha Ha up about this machine and this cycle but it may have run it's course so I'm starting fresh with another.
I bought two identical Hurco TM6 CNC lathes. We only program our work in Master Cam and will not be using the Hurco's programing side. Turns out one of the machines will only thread using a G78 cycle witch I am told is similar to the Fanuc G76 cycle.
Other than standard drill cycles we do not use canned cycles and are a bit lost using this G78. If you have a Hurco and use G78 for O.D. and I.D. threads I would be grateful if you would post a copy of your code for a 5/8-20 OD thread and perhaps one for an ID thread.
We have been messing around losing valuable time on jobs for a few days now and really need some help.
Thanks
Ron
This is the sample we have been trying to tweak to work on a 5/8-20 thread by changing the numbers. This sample is Metric and some of the numbers don't make sense to us.
G78 Threading Cycle Format
G78 P010060 Q100 R0.05
G78 X30 Z-20 P1024 Q200 F2
First block of the G78 Threading cycle
G78 : G code for threading cycle.
P : P actually consists of multiple values which control the thread behavior,
01 : Number of spring passes or spring cuts or finishing cuts.
00 : Thread run out.
60 : Flank angle or Infeed angle (allowed values 0, 29, 30, 56, 60, 80).
Q : Depth of cut.
R : Depth of Finish cut
Second block of the G78 Threading cycle
G78 : G code of the threading cycle.
X (U) : The end value in x-axis.
Z (W) : The end value in z-axis.
P : Thread depth ( as radius value ).
Q : Depth of first cut.
F : Thread Pitch
R : Thread Taper
N17 T101
N18 G54
N19 G97 S800 M3
N20 G0 X32 Z6 M8
N21 G76 P010060 Q100 R0.02
N22 G76 X28.161 Z-50 P919 Q250 F1.5
N23 G0 X150 Z100