Welcome to part 3 of the Atlas Copco STwrench tutorial series.
In this video we will be going over using the free mode on the STwrench
as well as doing a torque audit on 2 different joints
using the residual torque strategy.
Then checking out our results and traces using ToolsTalk BLM.
First let's go over using the free mode.
On the main screen you'll notice it's the top option
In order to navigate to it, we'll hit the right button.
From here we have several options from track,
peak, residual torque with time,
residual torque with angle,
tightening torque with angle and track angle.
Let's use the Peak, so we can quickly tighten a bolt and see what our peak torque is.
We hit right and it brings you right into the menu.
So both of these guys were just about 25.5 Nm
Hitting the right button will clear it, or starting a new test will clear it.
Let's say we want to do a quick residual torque test.
I can navigate down to residual torque with angle,
hit the right button,
and it will ask us what our target torque is.
I'll hold the up button..
Until we get to 25.5 Nm
I'll go ahead and start with the first one we did.
I'll slowly tighten it
And we hit our residual torque at 22.07 Nm
at 2.5 degrees
I'll clear that out, let's try the second joint.
You'll notice that the tool
will give you an OK, High, or Low value. It will also vibrate
and light up like it did in the previous tutorial when we were doing tightenings.
And you'll see our value right there
of 24.52 Nm
at 2.8 degrees.
Alright so..
unfortunately since this was a quick test this data doesn't get saved.
we won't be able to see our traces, we won't be able to see our stats if we pull up the statistics monitor
on ToolsTalk BLM.
So let's switch over to the software and we will set up a Pset for this guy.
Go ahead and back out to the main menu.
and connect via USB.
So now that we are back in ToolsTalk
we can go ahead and hit the connect button
and now we can open up our pset dropdown
and I'll go ahead and create a new Pset for this guy.
I'll give him number 9, looks good.
and I'll name it
Res
Demo
and hit OK
so now underneath the strategy
I'll go ahead and select residual torque/angle
and then under the torque control
we'll enter some values.
I'll set the cycle start to 8
the final torque min to 22
the final torque max to 27
lets change the final torque min to 23
we'll change the screw at 30 Nm
and we'll have the start final angle happen at 8 Nm
after that it's all we really need for this test so I'll go ahead and hit store.
close this out
and disconnect
Now back on our STwrench
Go under program mode
Pset
and we see that our Resdual torque Pset is right where we wanted it
So lets use the tutorial Pset
that we created in the last video
because I know this one will be tightening these
bolts down to 25 Nm almost exactly
I'll loose these two
and now I'll switch it back to tightening
and using the PSet
we should be alerted exactly when we hit our torque of 25 Nm
So the first bolt is 25.62
23 degrees
and the second bolt
Ah we went a little over on the angle
now I had an angle max of 200
So let's try that again.
I exceeded my angle because I loosened it way too much.
I can fix that by either increasing the maximum angle
or by just not loosening it so much.
So now that we have reset our Pset
lets try tightening this bolt again.
So now we have a 25.22 Nm
and this time it only took 61 degrees since I didn't loosen this bolt so much.
Since they are very different joint types
I should have different Psets for both of them
but for the sake of this tutorial we will just use one.
So now I can navigate back to the previous menu
and instead of picking the tutorial demo,
I'll pick the ResDemo that we just created.
Now this guy is ready to go
we are on tighten,
and as soon as we start we should know exactly how much residual torque is left in these joints.
We had 26.12
and 23.65
for the peak and for the residual
So I can clear that result
and we will do the second joint
Now with that guy we were a little bit low on the torque
so our residual is 22.9 however
our peak was 29.
So now say you want to check out these results
Go ahead and plug this guy back in
and then back in ToolsTalk
we can connect one more time
and this time I'll open up the results viewer
we have a lot of results on here as you can see
but once it's done reading all of them it will ask what Pset we want to check out
We will select Pset number 9 which is ResDemo
hit OK
and now you can see that the two..
tests that we just performed are right here
and you can see that they reflect the values that we just had
where the second one came in low, the first was ok
and the torque peak was high on the second one, even thought the torque status was low
shows us that we are using the residual torque strategy
gives us the angle
and all the other information we need.
and for a better visualization of these results we can
go over to our traces
and up top over here
it will always show you which trace was the last trace.
only 10 traces can be saved at a time
on this Stwrench right now
so we'll go ahead and click number 9
and that will pop up
and now we have a good graph
showing where our residual torque was and our torque peak
So this is the one that failed
this is the one before that, that was successful
and you can see the green line which is 23 Nm which is our min
and 27 which was our maximum
and those are the values which we had set in the Pset earlier.
and again we can go and print these, we can save them to disk
we can do whatever we'd like with them
whereas on the actual STwrench itself
we don't have as much information if we were to go to the results viewer
All we have is OK NotOK
With a quick readout of the residual torque that was read
You can go in and see more details
but you have to click through and read this tiny screen and you don't get to see the actual trace.
Which is very nice to see, it gives you a much better understanding of what's going on
So that concludes this quick demo
in terms of using the free mode
and doing residual torque tests on different kinds of joints
obviously you can specialize it more
but this makes a very great tool for going around
and quality checking bolts
on the assembly line or around the shop or where ever you need it done.;
thanks for tuning into part 3,
and I hope you enjoyed it, it was a bit more laid back style this time
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go ahead and add them to the comments on Youtube
we always check those, we'll get back to ya
Thanks for watching, have a great day!