In this lesson, we'll review a CNC lathe setup. After completing this lesson, you'll be able to simulate toolpaths and verify stock removal. For this lesson, we want to get started with the supply dataset stock handling.f 3D. We should be in the manufacturer workspace and looking at setup 1. In this case, we want to talk about ways in which we can review the stock removal. We've already talked about this several times by simulating other toolpaths and turning on in-process stock, but we want to make sure that we dedicate some time just to simulating and reviewing this as it is a very important aspect of the process. One thing that we can do is we can view the toolpaths by toggling on and off their visibility in the browser. This automatically happens when we select a toolpath and whether or not we have in-process stock turned on or not will show us a yellow preview of the stock and the material that's been removed, and then we have this purple blue cross-section of the part. As we move down, you can see more material gets removed. If you want to turn off the display of the toolpath, we can use these options as it's shown in the in-process stock. We have a single groove toolpath, we have a chip breaking, which is a drilling toolpath through the center, and then we have a larger drill to remove more material from the center, and then we're profiling the inside. Everything here looks pretty good. Obviously, the part needs to be removed from the rest of the material and the backside needs to be machined as there is a taper and a step here. But everything so far looks good as we're looking at it inside of the normal viewing setup. But let's go ahead and take a look at the entire setup and let's simulate this. As we're taking a look at simulation, I'm going to play through but I'm going to slow the speed way down so we can see what's happening. The tool is coming in and we can determine whether or not we want to see the tool and the holder or just the insert, for example. We can determine whether or not we want to see the stock and how we want to view that stock. Right now the stock is turned on a comparison mode. The comparison mode is going to show the stock as blue by default, and it's going to show as green if it's completely matching the underlying geometry, or red if it's gouged material. You can see as we go back and forth, when we get down to the geometry that we are trying to cut too, you can see that it's now turned to green. If we actually had a gouged and we went too deep, then it would turn red. What's happening here is we can also determine whether or not we want to show it as transparent so we can see the underlying material. We can determine what the accuracy is with the slider, and we can also turn on stock to leave and tolerance values. For example, if we were trying to leave 0.02 of stock on the outside of the part, you can see it's now red because we've machined all the material off the outside. This is great if we're reviewing toolpaths that have stock left behind and we want to make sure that it matches. The tolerance value will also determine whether or not we are close to the tolerance that we're trying to hit. If I add an extra zero, you can see that now we're getting this blue and red marbleized color. The blue is material left behind, green is matching, and red is going to be areas where we've gouged. When we set the tolerance value in too small of an increment, what's happening is the tessellations. The underlying mesh that's being created is underneath that tolerance value. Now, one thing that we should consider is that this tolerance value is related to some of the tolerance values inside of these operations. For example, if we close out a simulation and we go back to our profile toolpath. Inside of our Passes section, the tolerance value here of 0.0004. This is the standard tolerance that we're using as we're calculating these. If we make this a little bit smaller, 0.0003 for example, and we regenerate all of these toolpaths, we're going to use Control Z on the keyboard or Command Z if you're on a Mac, then I'm going to resimulate everything. I'm going to jump ahead a couple operations, I'm going to jump pass the outside profile. But now if we take a look at this tolerance value, we set it out to 004 or down to 003. We can see that as we're moving this tolerance value around, it is having an effect on what we're seeing on the screen. Remember that tolerance value we set was 0.0003 in the outside profile toolpath. Even with that in mind, you can see that the color gradients the, deviation and color, is not quite matching that. I would suggest leaving the tolerance value as the stock value unless you have a good reason to turn that value down and analyze what material is left behind. From here, we should also consider this option at the very bottom for view. The view port for model and tool will change whether or not the tool rotates around the part or if the part is actually spinning. Now it's set to model, and if we set it to tool and we play through, what you're actually seeing is that the model is moving around the tool. This is a different way to think about this as, when we're talking about turning, it really makes sense for us to keep the tool static and then spin the model around. Now when we're talking about milling however, it makes more sense for us to move the tool around and keep the part static in some cases, but in other cases we want to see a true to life animation, where the part is actually moving. Keep in mind that that option can change the way in which we're viewing the material being removed. Because there are many settings, it's a good idea for you to come in and simply play around with these and see what works well for you with your specific parts. The other things I want to mention and simulate are going to be the Info and the Statistics tab. The Info tab can give you great information about things like the speed and location of the tool at that specific point in time. We can see what tool is being used, what operation and work offset, and then even information about the verification, the starting volume and the material that's being removed in that operation. For example, if we go back before the original profiling toolpath, we can see information about the volume that's being removed in this operation. If we jump to the next operation, you can see that this verification is still staying the same, it's still showing us the total amount of stock that's being removed, but we move on to another tool and we see information about its speed and its location. The statistics will give you general information about the entire setup that we're looking at. If we had just a single toolpath selected and we were just simulating that, we would get information just based on that. But here you can see the machining time is about 20 minutes, the number of operations, and tool changes are six. There's also some information we can gather by right-clicking on the setup or specific toolpaths to see things like machining time. Again, you can see here, if we have the feed at 100 percent, you can see exactly what those values are. If we were to increase the speed to 120 percent, you can see how that affects the total fee time. This is handy if we want to explore just a single toolpath, for example. This profile is removing a lot of material. If we go into machining time and we see that it's cutting at about 18.5 minutes, if we were to double the feed, you can see that it drops it down to nine minutes. As you're considering things like increasing the RPM or increasing speed, some of these tools can be handy to see what the effect of that is. From here, let's make sure that we do save our work and save it often and then we can move on to the next step
