Hi, I'm Mike Corliss from Tormach. Today I'm going to show you how to use the Procunier Tapping Head.
and explain a few differences in some different taps,
and show a few different ways to program the tapping head
Here's the
tapping head itself
and i have a quarter twenty spiral fluted tap in it.
The tapping head will come with the two wrenches
and uh... for different collets to hold from a quarter-inch
down to a zero
This is a spiral fluted tap
It works great for blind holes it's gonna suck the chips out of the hole.
This is a three eighths sixteen spiral pointed tap
it's too big to use in the Procunier but I just want to show the difference.
This tap is not good for blind holes because it drives a chips ahead of the tap.
Whereas spiral fluted taps will suck the ships out.
The spiral pointed tab pushes them ahead of the tap. It's great for through holes
but not good for blind holes.
This is a quarter twenty form tap
It doesn't produce any chips. It rolls the thread right into the hole. You have to
use a little bit bigger tap drill
than what you would for a cutting tap
but there's tap drill charts
so you know what size tap drill to use.
And this is a zero eighty.
It's the smallest tap that I've used.
We'll tap
some hot rolled angle iron with the zero eighty
These are the collets and they'll locate on the square in the back side of the tap.
As you feed them in there you turn them until they lock into place.
The same with the back side of collet. The back side of the collet
locates
inside the tapping
spindle itself. There's a flat inside that matches up to
the flat on the back side of the collet.
The auto-reversing head you don't have to reverse the spindle.
When you switch feed directions from Z minus to retract back to your
rapid plane
it automatically reverses the spindle
and when it reverses the spindle in here it doubles the spindle, so you have to
the spindle RPM, so you have to double your feed rate on the way out
and you'll be able to see that in the uh... the program
And you'll notice that the feed rate down
matches the pitch
of the tap
uh... times the RPM
and then
on the retract you'll see that the feed rate has doubled
This is how you load the Tormach Procunier
auto-reversing tapping head.
This mounting flange
has to be set up in the void in the casting on the back side.
Just load it through the collet
into that casting
This machine has a power Draw-bar
All you have to do is lock it.
We're tapping a half inch deep blind hole. The Pilot hole is 5/8" deep.
When you're using...
...the M871 code...
you have to give it your pitch
in this box
and if you are using your Procunier head
you have to toggle this on
If you were using a
different head
some of them require a dwell but this Procunier doesn't require a dwell.
Give it the pitch
make sure you've got
the Procunier toggled on
and what it's going to do is whatever spindle speed you have
programmed in your G-code
It will calculate the feed rate...
...down and...
when these Procunier auto-reversing head, when you
switch directions, when you start feeding up,
it doubles the RPM
so you have to reverse your feed at twice
at what you fed down at
so it will calculate, since it knows it's at twenty threads per inch
and I programmed it at seven hundred and fifty RPM's
it will feed down at about thirty seven and a half inches a minute
and then reverse at about seventy five inches per minute.