fear of tapping

[?Mark]

OMG.

Who would have thought that alum tapping would generate 49 posts.

Will you tap those holes already PLEASE

 

Kind regards, Mark

[Jack Mitchell]

Die thread Die!

 

Regards, Jack

[MetalMarvels]

Are we there yet? Are we there yet? Are we... "SMACK"......

 

I forgot to mention that MOST of the breakages on my roll taps in 6061 are either the first one in (because of a "dummy" move on my part)or after a long series of production (and I forgot to change out the tap for wear). I have lost a couple when the part moved (again traced back to a "dummy" move due to me).

[Philcott]

Jack,

 

quote:

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Die thread Die!

---

I would have guessed you have been around long enought to know dies are for external threading.

 

Phil

[motodog]

OK. I've been doing all this stuff that is discussed here. And after 80 or so holes, I break one. Attributed to my mistake, weak workholding. Fix that, then one of these puppies (taps) smears and almost kills a good part.

 

I think I need to just squirt raw coolant on it when tapping? Any body?

 

I should add that I'm running "fairly rich mix" of Kool Mist coolant.

 

Its not beating the dog if you are still learning from it!

[?Mark]

quote:

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I think I need to just squirt raw coolant on it when tapping?

---

You were not listening motodog

Do NOT attempt to use a roll tap without coolant.

Flood it with coolant and a tap should do thousands of good threads.

Kind regards, Mark

[motodog]

Also, these taps are a little "cheap looking"

 

They are Greenfield T & D brand, ti coated..

[?Mark]

quote:

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Also, these taps are a little "cheap looking"

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Yes, there is no cutting edges on them.

Greenfield is a fairly good brand.

Lets check again if your rpm and feedrate is proportionate to this: S915 F45.0 (for M8*1.25)

 

Kind regards, Mark

[motodog]

s 508, F25 (20.32 tpi)

 

And the "cheap looking" is abit oversimplified. They have flaking TiN

[motodog]

hold everything. I think I just had a learning moment!

 

If I bump up the spindle speed on the VFO, which I did to improve another operation, it will mess up the feed / rpm relationship, won't it?

 

 

Hmmmmm.

[?Mark]

You mean override spindle speed?

Mark

[motodog]

thats the one

[motodog]

I guess that I thought (subconsciously) that rigid tapping locked up the feed and speed, kept them linked no matter what. But my bet is that the spindle override...overrode the spindle (a "duh" moment)

[motodog]

Wow, this is great.I reply to my own questions!

 

Good thing I'm not an idiot!

[Tim Johnson]

motodog,

Tap that puppy as fast as your machine will allow with coolant. The faster speeds will put less stress on your tap.

[?Mark]

quote:

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I guess that I thought (subconsciously) that rigid tapping locked up the feed and speed, kept them linked no matter what

---

Yes it does on newer machines. On older ones it's another issue

But even on new ones it's a parameter setting to not read spindle override while rigid tapping (I think).

 

Mark

[motodog]

Thanks. Parts are moving nicely now. I am not touching it!

[motodog]

hey, an unrelated question.

 

When I first set this machine up, I remember a parameter or setting that prevented any XY until Z is done. Once or twice, this thing (vfo) has xy moved before the z was done (braking stuff). It only happened in rapid retract on a contour toolpath.

 

Any idea which setting or parameter it is? Can't find it now. I just quit rapid retraxting on contour.

 

It was maybe in the post?

[one shot]

If you spent as much time taping as you did typing, we would be over this now. There is a parameter for the HAAS to prevent spindle overide during taping, I'm pretty sure. We just installed one and I remember reading it. I'll have to dig into the books when I'm back at work.

Remember, just look the other way as the tap approaches the hole.

[motodog]

To make it worse, I can't get my avatar to show on my forum profile....maybe I should just go back to my old hand crank Bridgeport!

[?Mark]

quote:

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I remember a parameter or setting that prevented any XY until Z is done.

---

No, it's most likely programmers mistake.

There is no parameter setting for the machine to prevent xy move until z retract is done...

I know some people could use one

 

Kind regards, Mark

[?Mark]

This thread won't die, will it?

 

Mark

[motodog]

Could it have been a post processor thing?

I swear I remeber something......

And I am one of the newbies who never wrote code...Mastercam is calling the shots.

 

Because I'm a liberal democrat, I beat all topics into the ground, and blame others for all problems

 

That should kill it...

[Müřlıń®]

quote:

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Because I'm a liberal democrat, I beat all topics into the ground, and blame others for all problems

---

ROFL.....

[?Mark]

quote:

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Could it have been a post processor thing?

---

I seriously doubt it(unless someone who had no idea played with it )

quote:

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Because I'm a liberal democrat, I beat all topics into the ground, and blame others for all problems

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Lol

 

Mark