WCS offset vs pattern

00:02

In this lesson, we're going to talk about WCS offset versus a pattern.

00:08

After completing this lesson, you'll be able to: Use multiple WCS offsets.

00:14

In Fusion 360, we're going to use our fsae rim front setup.

00:19

We want to talk about WCS offsets and we've already taken a look at them in a few different instances.

00:25

We've gone into our setup and we've used WCS offset of one to set a G54 offset for our OP1 program.

00:33

We've also talked about the option inside of our pattern where we can override the WCS.

00:39

When we do this, it allows us to make a pattern of an entire program and simply put it at another WCS location.

00:47

So I think it's important that we understand the differences between a multiple WCS offsets and patterning something.

00:56

When we create a pattern, what we're doing is we're simply telling it how far over we want it to go each instance.

01:05

So if we're creating a pattern in this case, a linear pattern, what we're doing is we're selecting a direction and we're selecting a spacing.

01:16

Now, this is problematic when we're talking about WCS offsets,

01:20

because that means that we need to know the precise location of the other coordinate system.

01:26

We need to know that it's exactly 8” away from the center of our G54.

01:32

When we're using a WCS offset, this is done inside of our setup.

01:37

We go to our post process tab and we select multiple WCS offsets.

01:43

We can choose a number of instances and the increment that happens each time.

01:48

For example, the number of instances set to 3 with a WCS offsets starting at 1, means that we're going to have G54, G55 and G56.

02:00

We also have the option to preserve order, order by operation or order by tool.

02:06

If we preserve order, it means it's going to do the entire program at the first location, then move and do the entire program at the second location.

02:16

Depending on how far apart your coordinate systems are, you might want it to preserve the tool order.

02:23

So if we select order by tool and we now use those multiple WCS offsets, we can re post process OP1.

02:32

We're going to overwrite 1001 and we're going to view the code.

02:36

I'm gonna go ahead and make this full screen, minimize all of the different notes that pop up and I want to take a look at what we have.

02:45

So our Adaptive1 operation is referencing G54.

02:51

Now the adaptive operations take quite a bit of time because there's a lot that happens with them.

02:57

So we're gonna have to scroll down for quite a ways until we find that adaptive.

03:01

We can also use Control F to find another location.

03:06

We can either look for adaptive or we can look for G55.

03:11

You can see here when we're looking for G55, we've gone 83,000 instances, which increment every 5 or 36,000 lines of code.

03:22

So if we look for G56, you can see that once again, we have another adaptive operation at G56.

03:31

You'll notice that there are seven instances of G56.

03:35

And that's because we have our adaptive, our drilling, our 2D contour, our adaptive, we have a scallop, a pencil.

03:43

We have other operations that happen based on this coordinate system reference.

03:48

So when we're using our multiple WCS offsets, Fusion doesn't care where these other offsets are on your machine,

03:56

because they're programmed into the controller.

03:59

However, when we're using a pattern, we have to be careful that we're using a WCS pattern rather than patterning an operation at a set distance.

04:09

So I generally like to use patterns internal to a single part.

04:15

So in this case, we pattern all of the operations around the rim.

04:19

So we've used eight instances of the same operations.

04:23

If we want to move this to another location, I would use multiple WCS offsets.

04:28

You'll also notice that we get some warnings, multiple work offsets used in program.

04:33

That doesn't mean that it's a problem.

04:35

It's simply stating that we have multiple work offsets and we need to understand that when we're setting up our part.

04:42

At this point, I'm going to go back to a home view and I want to make sure that I save this before moving on,

04:47

and tackling any of the practices or challenges associated with the course.