Hi Mike Corliss with Tormach
Today we are going to talk about establishing your work offset
To establish the work offset...
we're going to touch off with an empty holder, we'll touch off on the face of the part.
And the face with this tool holder and that's what we're going to use
to establish our work offset
that way it whatever tool you're using
your insert breaks or whatever you could always reestablishes
work offset just using the holder you don't have to worry about your
repeatability with an insert or something like that.
So, clamp this up.
So now I'm just going to touch off with a piece of paper.
Just bring it in until you get a light drag on your paper with the tool holder.
Now, go to the offset page and the offset table.
Right now we have nothing in here everything's blank.
Ok, now I come down and I'm touching off my Z axis.
Clean that off and I want to include the thickness of my paper,
Plus we'll say there's ten thousands finishing stock on the front of that part.
So I enter .0 13...
...for the ten thousands plus the paper. Hit enter.
So now tells me our Z position right now is 13 thousands...
.off the face and if you look up here...
...it entered a work offset
That's the distance from the machine 0 when you reference the machine
if you zeroed it out there that's the distance from the
limit switch to how far you moved it to touch off...
...the face of the part. Ok. Now we can do the same on the X.
To touch off in X you wanna know what the diameter is.
you need to know the diameter that you're touching off of.
So call that two-inches' 248 thousands.
And then I raise the tool holder up.
So the face of the tool holder would be in tangent location to the diameter
Then I do the same. I enter that diameter on the X axis...
...for the work. And seeing or touching off from the...
...the front side of the part or the bottom side the numbers go to be..
...negatives so I'll enter a negative
two point. The stocks...
...two-inches 248 thousands we've got to add the thickness of our paper.
which be another 6,000 so two inches 254 thousands.
Hit enter.
Now that entered an offset up here in the X.
Now we have our workpiece established our...
...G-fifty four work offset established with our...
...master tool holder. We'll call that our...
...this we'll just call our master work offset holder...
whenever you're gonna touch of a workpiece you gonna put this holder in and...
...touch off the face for your length...
...and your diameter offset. That's going to establish your work offset...
...and from there we'll touch our tools off and then we'll get our tool offsets from there.
So this is how you touch off tools
and they're going to have a negative value when you use the Quick Change holder...
...and you're below center...
...of the workpiece from the diameter's. If you're touching off and your...
...tool holders are above, you're going to have a positive diameter...
that's what the difference is when you touch tools off.
If you have a tool turret the same thing again they're going to be a positive value because you're to be on the top
...side in the cutter, of the workpiece.
Call this tool one,
a turning face tool.
Then we'll just touch off on a piece of paper just like we did
...in the tool holder.
...for our work offset, we'll do the dame thing for our tool offset.
Ok.
Be sure you have tool one in here.
Enter.
And then we pick the geometry of the cutter we have.
And our turning tool is this guy here.
Click that. And now we've touched off on the face...
...so...
We put in our 13 thousands, thre thousands for our paper and,
...then ten thousands for our finish stock.
Point Zero one three. You touch Z.
Now if we go to the offsets table this is...
...this value is the difference between...
...our tool nose and our tool holder itself that we touched off on. On the offsets page...
...the value in the Z for the tool that's going to be the difference between where...
...we touched off on the workpiece...
...and established our work offset from the face of this holder...
...to our cutting edge on this cutting tool.
That's the dimension...
...from here to here. Ok? Now, when we go to...
touch our X off, that value is going to be the difference...
...from when we touched off here...
...and the cutting nose radius here.
there
Ok, we've got the cutter dragging on a piece if paper..
We'll enter our value in the....
...box here. Remember it's a negative value because you're on the bottom side...
...of the diameter. so negative 2 point...
...2, 54...
...touch X.
Ok.
Now the value that shows up in the offset table...
...is the difference from the face of what we touched off our workpiece...
...and our cutter but it's shown as a diameter so...
...this distance is going to be radially, so you'll have to multiply...
... this is by two and that's what's gonna give you...
...your number on your offsets page.
So our number on our offsets table is 2 inches 200 and 23 thousands.
If we measured that distance from here to here...
...it'd be half that because it would be radially.
Ok?
Now we'll touch off a grooving tool.
Ok, now we go to touch that tool off...
...we go to tool touch page.
Tool two.
Pick the cutter geometry.
Come in on the side of it again.
Now when we go to touch Z for...
...the grooving tool.
The offset is actually on the center line so we got to add half...
...of our grooving tool thickness.
...and that grooving tool measured...
...197 thousands so if we add...
...half of our grooving tool....
...would be...
...we'll call it 98,000 plus our...
...ten thousands finish stock, so we're at 108 thousands, plus our paper,
we'll enter 111 thousands for our touch Z offset.
And then our diameter is the same as it was on our other tools...
...as far as the touching it off part.
Ok.
Enter our diameter.
If we check the offset table...
measure our values...
What else?
That should be about it I guess.