Rigid Tapping Question

[cncsnw]

I am going to ask where in the Centroid manual it says that it will still rigid tap with an F value by figuring out the pitch from the RPM/Feed.

You could just try it and see.

Verify that your spindle encoder is working correctly, and that you have set Parameters 34 and 35 correctly.
Set bit 0 of Parameter 36 (i.e. set P36 = 1, assuming you don't need any of the other features) to select Rigid Tapping.
Run a G84 cycle that uses 'Q' and verify that it works correctly.
Run a G84 cycle that uses 'F' instead, and see whether it works correctly.

[RJS100]

I will give it a try.

[suntravel]

What is dissapointing? That fusion has not build in a rigid tapping cycle?

Uwe

[RJS100]

I thought I had seen others using Fusion 360 and rigid tapping with Centroid. I had no idea that this would be an issue.

[RJS100]

If I choose to use a tapping head, do I simply disable rigid tapping in the wizard?

[RJS100]

This is the post I had seen using Fusion 360 with Centroid and rigid tapping. I believe they are using the same post that I am.

https://centroidcncforum.com/viewtopic. ... 351#p81351

Richard

[suntravel]

He added a delay by hand to the fusion code, and only tapping air in the video.

The one below with real tapping is not fusion.

Tapping with ok g-code



Uwe

[RJS100]

Thanks Uwe. I have to think about this one for a bit. Not sure if it is worth the time to modify the g-code each time I want to rigid tap, or use Intercon instead. Neither is what I had in mind. On the other hand, adding a Q value to each line may not be that bad.

[RJS100]

I hate giving up so I tried to better understand this.

We have been discussing the fact that Fusion 360 was not outputting a Q value. As you pointed out, the manual says:

Note: If rigid tapping is enabled, a Q may be used to set the thread lead or pitch. However, because Q is not modal in
the case of Rigid Tapping, you must specify Q on every line at which Rigid Tapping is to occur.

This is confusing me because the Q value is defined as the pecking depth when using pecking with rigid tapping. In my example. I used a simple tapping cycle, not a tapping cycle with pecking.

The "Q" you are referring to is different than the one below. Are there two Q values that we are referring to?

Richard

[suntravel]

Never give up is a good state of mind.
G84 could be different on different CNC systems, one reason to have different Postprocessors in CAM
Here is an example with comments of Rigid Peck Tapping with Centroid.
You can generate this with Intercon in 20s.
IMHO it is best to know Intercon and fusion, because for many tasks Intercon is way faster

Uwe