How to tell if the machine has rigid tapping?

[donl517]

I was told this machine has rigid tapping but after a code G84.2 and try and run G84.1 it just sits there. How can I check to see if the machine really does have rigid tapping? Do I need to go into the Parameters?

Thanks,
Don

[Sprew]

Don, the G84 is a tapping cycle code. On the fadal the .1 and .2 and used to signify which gear you want the tapping to be done in. If you are using a higher rpm, the spindle may "coast" to a stop before reversing. The z axis may reverse prior. If you keep it in a lower gear it will respond better. The machine does not know if the tap is chucked rigid or floating. There are physical componets needed to do rigid tap. The proper spindle driver and spindle feed back, not just a tach. Do you have a factory setup sheet in the back of the electrical cabinet? That may tell you. Or you can call the factory with the serial number and they may help you.

Good Luck
Mike

[Surfacefeet]

Don, G84.1 is for rigid tapping.Plain G84 is for the floating type of holder.One way you can tell if you have Rigid Tap is look up top above the Spindle motor.The Black plastic coil thing that holds all the wires together.If there is another Black Plastic coil right behind that one then you have Rigid Tap.

Also,we bought some new Fadal years back with Rigid Tap.When we tried it it didn't work.We called Fadal out and it turned out that the spindle had to be calibrated for the Rigid Tap and it wasn't.Don't know why or if they were supposed to do it at the factory but anyhow it has to be done by the Fadal tech.He calibrated it and then Rigid Tap worked just fine.G84.1 is the G-code we used for it.

[donl517]

No setup sheet & no extra energy chain. How do the calibrate the spindle for rigid tapping. Is it in the manual somewhere?

Thanks,
Don

[Neal]

The rigid tapping is calibrated by placing a special ground threaded master in the spindle. Using a .0001" resolution indicator in the thread run service program O6000. Adjust the Gain and Ramp parameters on page two of the SETP until the needle tracking is less than .0005" total deflection. The service program can be retrieved from the E-proms by typing TA,7 at Enter Next Command.

Neal

[donl517]

Where can I get the "Special Ground Threaded Master"? I have looked on line but I don't see anything. Does it just have one V in it? If someone has one can the snap a picture of it, perhaps I can just make one.

Thanks,
Don

[fpworks]

Don,
By the time you end up buying one, you might be better off just paying a tech to come out and do it for you. I imagine they are not cheap.

It is just a threaded rod, but has ground and certified threads. It needs to be of sufficient size threads that you can put an indicator needle on the threads. I gave a 1" toolholder to a service tech that said he was going to use it for checking rigid tap cycles, so I imaging that they use a 1" diameter rod.

If you have any large ID master thread gages of sufficient length, you might be in luck. The trick is mounting them in the spindle with minimal runout. Of course, you'll need to program a tapping cycle with the same lead as the gage you're using to dial in your parameters.

Justin

[donl517]

Even more perplexing now! I went into the SETP parameters page and it says High Torque/Rigid=Yes. So I loaded the TA,7 programs and tried to run the Rigid tap program. when it gets to the G84.1 line it hangs for a second and then just drops out of auto mode.

This machine has all new cards in it. Everything was upgraded. How do I tell what -model it is?

Does the model make a difference on the G84 code?

Thanks,
Don

[VMC_Jeff]

Look at your spindle vector drive. The tag should say "RT Ready" if not you don't have rigid tap.

[donl517]

Originally Posted by VMC_Jeff Look at your spindle vector drive. The tag should say "RT Ready" if not you don't have rigid tap.

I've got a Mitsubishi vector drive and there is no place on the tag that references the rigid tap capabilities. Funny thing Fadals manual does not mention ever using a Mitsubishi vector drive. I'm sure they did, it just doesn't reference them anywhere. (I downloaded the manual off the net.)

Don

[VMC_Jeff]

I have never heard of them using Mitsubishi either. I was always told it was either a Baldor or Advanced Motion Control. We ran into the same problem a couple of years ago. Dealer sells us a used 4020 production series with RT and when we got it in and tried it out nothing. We had hired a machine repair tech to check it out for any seriuos problems before the sale but he never checked rigid tap. Since then we only use Fadal Techs to check out any equipment before we buy.

[envisioneng]

I think you can go to the enter next command and type SETP and it should tell you what is installed. just don't change any of the settings or you can screw stuff up