I think you need to have a form of encoder. The AL2 I run is from the 80's and has a separate belt going from the spindle to a speed sensor of sorts. It definitely can't orient the spindle, but it can thread using G76 or G92...I haven't tried G32 though. I think the gist is that if your machine can display RPM digitally, it can likely run a canned thread cycle.
This could always be done on a manual lathe... But for something like programming G32/G76 threads, you need scales and encoders to match the spindle speed SFM relative to feedrate... So, YES, obviously a CNC machine requires encoders and machine positioning...
@@somethingelse4424 I still run an old 1970's Mori Seiki longbed lathe. G76 threading production runs at least twice a year. As primitive as it may be, that's exactly what an encoder does... To put it simply. If you're running CNC, you have some form of encoder.
Hi I've seen G32 with a Q value. Can you please explain what the Q is for in this cycle. I'm looking at starting my thread at a specific angle relative to another thread .
Hi Bheki, Shame the poster of this video did not respond to your question. In newer version of Fanuc controls, whilst using the G32 command, the Q value signifies a shift from the "C" zero point. If you use the command like this G32 Z-50. it is assumed that the C start point is zero. If you were doing a 2 start thread you could write it like this. G0 x50. z10. G0 x49.5 G32 Z-50. F.? Q0 rest of cutting depths etc. G0 x50. z10. G0 x49.5 G32 z-50. F.? Q180. Start point in C is shifted 180 degrees. G0 x52. Z10. This is useful when machining a multi start thread when starting in a groove. Regards.
Ive just watched this video and your g76 video. Do these operations require your machine to have encoders on the motors? TIA.
I think you need to have a form of encoder. The AL2 I run is from the 80's and has a separate belt going from the spindle to a speed sensor of sorts. It definitely can't orient the spindle, but it can thread using G76 or G92...I haven't tried G32 though. I think the gist is that if your machine can display RPM digitally, it can likely run a canned thread cycle.
This could always be done on a manual lathe... But for something like programming G32/G76 threads, you need scales and encoders to match the spindle speed SFM relative to feedrate... So, YES, obviously a CNC machine requires encoders and machine positioning...
@@somethingelse4424 I still run an old 1970's Mori Seiki longbed lathe. G76 threading production runs at least twice a year. As primitive as it may be, that's exactly what an encoder does... To put it simply. If you're running CNC, you have some form of encoder.
Hi I've seen G32 with a Q value. Can you please explain what the Q is for in this cycle. I'm looking at starting my thread at a specific angle relative to another thread .
Hi Bheki,
Shame the poster of this video did not respond to your question. In newer version of Fanuc controls, whilst using the G32 command, the Q value signifies a shift from the "C" zero point. If you use the command like this G32 Z-50. it is assumed that the C start point is zero. If you were doing a 2 start thread you could write it like this.
G0 x50. z10.
G0 x49.5
G32 Z-50. F.? Q0
rest of cutting depths etc.
G0 x50. z10.
G0 x49.5
G32 z-50. F.? Q180. Start point in C is shifted 180 degrees.
G0 x52.
Z10.
This is useful when machining a multi start thread when starting in a groove.
Regards.
@@MisterDuck999 Thank you very much that is very helpful. This solves my problem. I hope my control can do it , we bought It 4years ago.
q là gì