Hi, I'm Mike Corliss with Tormach. Today I am going to go over how to use an optical wheel dresser.
We are going to use the optical wheel dresser to dress a convex 8 inch radius on our grinding wheel.
Here's the wheel dresser.
This is a diamond point holder. It can hold an 8 inch diamond on this end and a quarter inch on this end.
You can use these optical wheel dressers to dress convex and concave radiuses in your wheel...
...if you get into small concave radiuses then you have to get a small diamond point and that's what this holder is for.
Now to set the radius you need to know what the height is from the diamond holder to the center of the wheel dresser...
...and that is lasered on the bed of the wheel dresser itself.
It's this H1 number, that's the distance from this face to the center line of the wheel dresser.
I converted it to SAE because that is the gauge block set that I am using. If you have a metric gauge block set you can just use the provided number.
So we will take this number minus the radius and that is going to give us the gauge block stack.
So, that is what our stack height is.
Guess I am the first one to use these.
To remove the diamond holder...
...loosen the screw on the side.
Then you can swing this ear down and then the whole holder will slide out.
Another way you can do this, this is just the quick and easy way that I have always done it.
There's another number on the bed here and its approximately 65mm. That is the number from the base to the center line.
You can take a set of height gauges to whatever radius you want from that number...
...and then just bump your diamond up against the height gauge also.
'H' is the distance from the center line to the bottom. From here to here.
And then H1 is from the center line to the face of this. That is what these two numbers are.
They're all going to be different because the etch these after the have the wheel dresser manufactured.
Snug down the screw on the side.
This wheel dresser, like I said, you can swing the radius all the way around.
We have it set for an 8th inch now.
There's angle stops here and what you do is you slide these...
...up against this stop
Just that angle...so if you just wanted to dress a radius up to 45 degrees.
Or...let me just set it at 45.
So now we can just swing the radius just up against this bump stop.
Okay, that is only going to swing up to 45 this way.
There's stops on the side that is only going to let it go back to zero.
Down here it hits a stop...up to here it hits a stop on the top and I have that set at 45 degrees.
If you were just going to swing your radius for a certain degree. Now if you wanted to dress 45 degrees on the wheel...
...turn the dresser to 45 and lock this screw.
And you can loosen....there's one on each side.
Now you can use it like a slide dresser.
I'll show you more of this when I get it on the grinder. It might be easier to see off the grinder.
Before I use the radius dresser to dress a corner of the wheel...
...I am just going to dress the bottom of the wheel flat. So I just stick the wheel dresser on here.
Lock it down.
When I am using...dressing the wheel flat, I want the diamond off center from the wheel.
You can see the center line of the wheel approximately here and I have the tip of the diamond offset a little bit.
That way if something should slip, you forget to turn the magnet on or whatever, its just going to kick the diamond out away from the wheel...
It's not going to...if you had it the other way it feeds it deeper into the wheel.
Now we have the optical wheel dresser on the magnet, if you look around the back here I put the fence up...
...and then I put a parallel on it. So that will square our dresser up with the travel of the grinder.
And now when we set the diamond on to dress the bottom of the wheel we had it offset a bit...
...when we are doing the radius, we have to have it right on center otherwise the size of our radius ends up a little off.
Back here I have the stop set...so that is at zero and then I set this other dog here.
That is going to give us that 90 degrees.
So, I can dress a 90 degree radius.
Now these being optical wheel dressers, the optical part is you look down through the center here.
It has a magnifying lens on the end and you can see just as your wheel touches your grinding wheel...
...or as you are doing your form dressing, you are able to see it real accurately.
I've got the angle set at 45 degrees and I have the screws loosened up so I can use the slide dresser part.
We can use this wheel to put chamfers on our block.
We'll drop it down and just take another ten thou off.
Right now it is setup for, see this straight line, this is for plunge grinding.
That is what we are doing. We are just plunging down into it.
So you can just see it...all we are doing is changing the speed rate on the longitude of the table
That is how you use the optical angle dresser, radius dresser, to put form on the wheel for grinding.