[dolarpond]

My machine is using Fanuc oi mate td Controller.

My machine is cutting a Max. thread of pitch 1mm.
When i increase pitch to more than 1mm, it still cut 1mm pitch Thread !!!
If i cut 0.5mm pitch thread, then it cuts correctly of 0.5mm Thread.

Looks like, a max of 1mm pitch Thread is cutting.

Is there any setting or Parameters or Hardware issue ???

Anyone Master here, plz help.


Regards,

[sinha_nsit]

Reduce rpm.

[dolarpond]

Thanks dear for the reply.

RPM is already 1800.

Today, we changed few parameters 1420, 1430. Thread is now coming close to 1.5mm pitch.
But, its not coming very correct. So am sure its Parameter issue. Can you suggest correct values of these parameters.


Regards,

[sinha_nsit]

Set 1430 to 5000 or more on a mm machine.

[dolarpond]

Thanks.

Current values are:

1420: 15000
1430: 13500

Now Thread is coming 1.5mm pitch from start. But as the thread goes more inside, its becoming tight. And
we can see very thin few threads at the very inner edge.



Regards,
Nitin

[dolarpond]

Now we chnage values to:

1420: 15000
1430: 15000

Now thread is looking fine except 1-2 issues.

1. Last 1-2 thread is not coming correct.
2. After last Thread, there r few thin lines are coming. Is tool is trying to do something at the very inner edge ? some chamfer or something else ?


Regards,

[sinha_nsit]

The thin lines are because of angled retraction.
First and last few threads would never be accurate because of acceleration and deceleration.
This is normal. Lower rpm, say, 500 would reduce this problem, but it cannot be completely eliminated.