THREADING PROBLEM

[Get lucky]

 Al right lets see if I can explain this.

I was wondering if there is a way to make the machine when threading to come to the end of the thread and stop (not meaning stop the machine) in the z and then retract in the x instead of leading out on the last thread I know this would make a sold line in the part but it is relived at the end so it doesn't mater.

the machine has a fanuc oi-tb

code is as follows

N300M01
G0T0000M8
(THREDING SECO INSERT 16ERAG60-A CP500)
(7/16-14 MAJOR .4361/4258 PITCH .3897/.385 MINOR .3511)
G97S200M3
X.4471Z.3T0000
G76P010060
G76X.3511Z-.995P480Q170F.07142
G28U0W0T0000



This was somebody else s idea
same kind problem just different part

N300M01
G0T0000M8
(THREADING SECO INSERT 16ERAG60-A CP500)
(3/4-10 MAJOR.7482/.7353 PITCH .6832/.6773 MINOR .6291)
G97S200M3
X.8Z.3T0000M24
G92X.7391Z-.749F
X.7191
X.7031
X.6891
X.6771
X.6651
X.6531
X.6431
X.6351
X.6291
M23
G28U0W0T0000


Thank you for your input,
Kyle
__________________

[cncmike]

Kyle,

Hello. I don't know the answer, but as before I could ask some people that are familiar with Lathe controls.

I would think depending on the control and machine, it might be possible long hand if you could match the feed and spindle timing.

I know on mills with a indexer you can make the feed and indexer move in sequence with each other. Also, I have worked with Swiss guys that have used macros to make twists in parts, having to sinc the spindle and feed together, not unlike a tapping cycle, but a long hand way.

Tapping cycles are basically canned cycles for what the machine is capable. On a mill you could create a tapping cycle long hand by sinc'ing the spindle and Z together and then reversing, canned cycles just make the function easier. I would say on a mill it would only be wise to do that with a floating tap holder though, just so you have some fudge factor.

I will let you know if I come up with anything.

cncmike

[Get lucky]

Mike,

I was on cnc teck talk and cnczone and I think the general consensuses is that I will have to program long hand in G32 format. I'm waiting on matl. now but I will give it a try.

[cncmike]

Kyle,

Yeah, in conversation at work today we really didn't come up with anything with canned cycle control. Would have to be long hand, a probably very possible if you have a "C" Axis, so you can program moves with two axis in the same line feeding.

Let me know if you get it to work.

cncmike

[cadcam]

So you want it like this come in tread and stop in X and pull out instead of leading out at an angle correct.
this is a box cut of what I think you want.

(OD THREAD RIGHT  INSERT - NONE)
G28 U0. W0.
G50 X10. Z10.
G0 T0606
G97 S200 M03
G0 X1.948 Z.2
G99 G92 X1.5126 Z-1. E.2
X1.5026
G0 X1.948
G28 U0. W0. M05
T0600
M30


Long hand:
(OD THREAD RIGHT  INSERT - NONE)
G28 U0. W0.
G50 X10. Z10.
G0 T0606
G97 S200 M03
G0 X1.948 Z.2028
X1.5126
G99 G32 Z-1. E.2
G0 X1.948
Z.2
X1.5026
G32 Z-1. E.2
G0 X1.948
Z.2
X1.5026
G32 Z-1. E.2
G0 X1.948
Z.2028
G28 U0. W0. M05
T0600
M30

Is this correct?

[JTemp]

I know on the haas machine its in the settings where you can alter the retract angle.