Hello, it's really exciting to be part of this tutorial and I believe you're all excited as well to start learning the software unit graphics annex, and before we get into unit graphics, let me just quickly tell you what it is about. So, unit graphics or Nx, also called as Yuji, it's basically an advanced CAD CAM c software. It was developed by Siemens and is basically used for design engineering analysis and manufacturing finished design by using some machining modules, but we could mainly focus on the design aspect and when you come to design like what kind of applications that you need graphics is being used upon. So, unique graphics finds applications in the industry of automobile, aerospace, defense, shipbuilding humans. sciences, also architecture and other miscellaneous domains, right. So, this unit graphics, which I have with me right now is nx 1847.

Okay, so this is Nx, I have a shortcut on the desktop, and this is the latest version that are 2019 one. And I have it already open here. So if you see here the interface or looks are slightly different in case you've used an X 11 or an X 12 previously, and just the UI or the user interface a little different, but however, almost all the other features are same as the previous versions, just that are there are like few options added here. Alright, so let's begin. So, to open a new model, you just go to File Open or you can you have a shortcut here itself. Just click on open here, and please my phone's here.

So first of all, to go ahead and create a new one, we just click on new. And then if you see here we have a lot of other things like DMU drawing layout editor manufacturing. So out of all of these, the one that you mostly uses like model drawing, and sometimes manufacturing and additive manufacturing depending on your company requirement, and Apart from this, the other ones we wouldn't use it much like for a big enough here we have. If you just notice here and model we have model assembly and sheet metal shapes to do so these four are the usual ones that have been used. And when you consider drawing it will be like either an A is zero size or a one size, a two size Three are a full size. So the one that we usually prefer for larger drawings will be like a three size.

And for smaller drawings, it would be like an a4. Probably. Right? So the other sizes, we don't don't use it much as per the company requirement, but again, it changes right. So when you see here before you actually create a part, you see something called as units here. So in units you'll find mm and inches.

So the one that is usually preferred in companies that it totally varies because in some companies, they would use inches for their drawings and mmm for the other ones, right. So, here what you need to see is that you need to understand the requirement before you change it because again, changing this is a problem. Once you start in inches that's a pretty lengthy procedure to again converted to Wi Fi. See this folder, right? This will be your directory. And you can save or you can set a directory as to where you won't have the folder.

Alright, so I'll just put something here annex models, okay. And this would be my directory and I can name the part and if you notice something prt does nothing but part. Okay, this is the extension, which is the and this would be the same for a model and an assembly shape file or even a sheet metal file. All right. So unlike most other software's all of these different models have the same prt extension, Alright, so, that's one way it's easier for as a design engineer. Okay.

So let's get started. So just going to click on model here. So this is going to be a new model. And this will be your first screen. And you'll see a lot of other options here. And this is the datum coordinate system.

And so we'll quickly look into the different Ribbon tabs that are here. So the first one is a home tab. Okay, and the next comes the assembly. So we'll look into this late later. And the CO point analysis view, render render is basically for like, it comes in like an advanced level is basically to set the product against a different background and to add effects to it, okay. And to the applications to to very usable applications.

And we would focus on mainly the modeling aspect, and drafting aspect, right, and coming back to home and just right click here, and then you would see all the other tabs which cetera. So, whichever is not required you can remove it and which was required in this added for example, like the reverse engineering, this is a very beautiful tool we will discuss all of these in the advanced level and to see firstly THIS HOME tab what you see here right this is the main thing which we will be using this complete icons and sketch sketch for us to get into a sketch or sketch a plane we would be using this command okay and then we have like myriad of other options. So, which we will discuss again and so, this thing that you see here right so that you have the x, y and Zed direction and this datum coordinate system by default it will be there in the model when you open when you click on new right so, it will be Ready for in case it's not that let's say this particular thing is not there.

So, let me just delete and you just have this option here. So you have datum plane datum axis datum CS wise. So CS wise is nothing but the coordinate system, okay. So there are basically like, mainly two that we use, which one is the absolute coordinate system and other is the working coordinate system, a coordinate system is nothing but it acts like a reference element in an infinite space. It uses the XYZ coordinates. And I'm just going to quickly create it.

And I would advise that, by default, leave it in the original position again, like this is x to be zero, y zero and zero, because especially when you're doing your assembly and all of that, it would be really convenient. Unless and until you really want to change it. Okay. So now we have the datum coordinate here. So I'm quickly going to create a sketch. Okay, so I'm just going to select a plane.

So let me select this. So we have the xy plane, then we have the exit plane, then we have the yz plane. So first of all, whenever we try to create a model, it's always advisable to understand which is the front view. And we usually prefer to keep the front view in this plane right and we try to keep central axis of a rotating component and all of that. So x would be the center axis of a component and so that the model would be placed on the so you would you would understand as in when we create the model, Alright, so let's quickly select this plane. So I'm just selecting this and you see couple of options here.

So when I, so there are two things on plane and on path, so the on path, we will discuss it in In the further sessions, I'll just show you on infinity. And you see, this one, you can, you can choose in further detail because we already have an existing datum reference, okay? So you can choose input and the horizontal where you can just leave it on horizontal for now. And also, you can use the work part or general escape or anything be fine again for now, and because I've already selected the csvs plane, so it's taking by default, okay? So just click on OK. And there's what we have here. So this we are right now into the sketcher environment, you would see the Home tab.

Now you would see a lot of new options being added here again, so you would see this all these curves curves, okay, this is the profile, this is the circle point of that and then the dimensioning so that Be like, we have different kinds of dimensioning the mostly used one is the rapid dimension. Okay, so the shortcut for that is D. And then you also have some options here, which I will be mainly focusing on. Okay. And so let me quickly show you a sketch for now, just to get, get a rough idea about it. Okay. So if you see here, as soon as I just selected the rectangle, and I just drag it over, I just got the rectangle long with certain dimension showing in very slight color, but it's not dimension if you read here, this is very important, you need to see this, the sketch is fully constrained with four auto dimensions.

So what it means is that so any sketch we need to ensure that it's fully constrained and when it is fully constrained. It would be So are we also see ISO constraint, so it would be green in color right? So you will see the difference now. So firstly, let me constrain it using just the dimensions, okay? So this plus d and these minutes select this point, I'm just going to select this particular color and I'm just going to leave it in default we'll discuss the other options a little later. So just click here and place the dimension and then again I selectors.

So, if you see here, what is the difference between this dimension and this dimension? So if you notice, this is being given just for the curve to define the But however this 50 that you see here, it's been given with reference to the origin like there are two types of constraints, one is the geometrical constraint and another one is the dimensional constraint. So, anything constrained with dimensions is called a dimensional constraint and anything which uses geometrical shapes like there are different kinds of geometrical constraints, for example, like coincidence concentricity tangency parallelism, so, I can just show that as well. So, this is the geometric constraints, the shortcut for that is T or if you want to open from here it is like you just click on More you have the geometric constraints here, okay. And coming to the geometric constraints, so you have like different options, your coincident point on tangent, parallel, perpendicular, horizontal, vertical, horizontal alignment, vertical alignment These two we wouldn't use it much, and midpoint collinear, concentric equal length and equal radius.

Okay? So let's try to constrain this with the geometric constraint now. So we added one dimension here. So what I'm going to do is I'm just going to use equal length, I'm just going to select the first object, and then make sure there's always checked on automatic selection progression. So what we see here, so I added this particular thing, right? So the equality constraints are both the dimensions are same.

And here so what I'm going to do here is I'm just going to geometrically constrain it. So we're going to take the midpoint, I'm just going to select this particular curve, and I'm just going to choose this particular line that you see right the Zed axis. So I'm just going to use that here. So when when I use that what happen As you see this line, it means it's the midpoint of this. So now it's fully constrained with one auto dimension. And this particular thing that equal and I'm just going to delete it, because that wouldn't be required at this point of time.

And I'm going to delete this particular line as well. And now it's all auto dimensioned okay. So, it says like, two dimensions required. So what are the two dimensions that is required? How would you find that the easiest one as a design engineer would be to just hold the point and stretched along? Okay, that would be the easiest way to do it.

If not, you can basically study the drawing and you will know how to constrain it. So to definers choir, what, what would you need, you would need the four sides, right? So what I'm going to do is I'm just going to use the geometric constraints again, you would see how I'm going to constrain it. So I'm going to use the equal equality constraint, I need this both are same dimension. So I've got that gets really constrained with one auto dimension. And why you get because you got the equality, you got the midpoint, it's because this particular line is still not aligned here.

If you see, I'll be able to move this up and move this down. So it's basically not aligned. So what I'm going to do here is I'm going to use a similar constraint, I'm just going to use the midpoint constraint. I'm just going to click here and I'm going to select the origin here. Now if you see it's fully constrained, right, such as dimension, given one dimensions and everything else are controlled by other geometric constraints, okay, so now Then click on Finish. And you see this point extrude.

So extrude or shortcut is x. So I just click on it, I just click on the object and I can get it. For now, do not focus on the rest, just focus on this. So I'll just give a distance of 25 mm, again, and the Boolean operation as well just focus on this right now. So, for the preview, you can show show result, okay? Or if you want, you can just click on apply, okay, and, and if you won't hide the sketch, you can either click on this and you can click on this hide again, or if you want to make it internal, you can just click on extrude, right click and make sketch internally.

So basically, the sketch would be inside the extrude option. So now I've just created a sample model. So what I wanted to show you mainly here was This. So how do you use your mouse button? Okay, so the first one, so the first part so there are like two buttons when you mouse with one scroll button like the majority of mouse country, okay, so the left button so this would be to select, okay, so when you select it would show you, they want to extrude the face of extrude it will show you it's a quick pick option, okay? So that's a really nice option you would understand as in when we get into drafting, right, so that's when you will understand how useful this is if I need to zoom in and zoom out.

So I just use a scroll, there's a simple scroll. And if I need to rotate back again, I press the scroll button, I just press and hold while I move my mouse and that's how I rotate. Okay, and in some cases, you also have this option of using the scroll button with the second button on the mouse and then you can rotate as well. So The RSP information. And one more thing, what I wanted to show you is the degrees of freedom, right? So the degrees of freedom.

So what this constraint basically. So why do we need to do a constraint? So I showed you dimensional constraints and geometrical constraints, right? So why do we do it? So the main point of that is to, to understand it, I'm just going to show it in space, or I just assume this is an infinite space, okay. And what I'm going to do right now is that if you see the directions here, there are like three directions, the x direction, y direction, and with the direction, okay?

The Zed would always be the upper direction. And what I'm going to do is I'm just going to select the object. And then I'm just going to use this particular thing. So there are so many directions here. So I'm just going to click on specify orientation. So what are the six degrees of freedom that you see here?

There are three linear and three rotational directions. If you see here along exedra is there is a direction, okay there is it's moving along XC positive xe and negative XC. And the same goes with this direction that the Y Z axis was to yc and the negative yc. Okay, and the same goes with the z direction. So you have a positive one and the negative one. So that makes like three translation motions.

Okay, that's a linear motions, and then we also have like three rotational motions. So one rotation is along the z axis, so that C remains a constant. If you see here that C, it remains a constant, and the other two directions keep changes basically rotation direction, and the same goes with the other ones. So if you see you can rotate. So these are the ones we are trying to arrest. So when we use a constraint These particular things do not change.

So you would understand this more when we get into the assembly of the file. Alright, so this was basically an introduction. And what we learned today is the very basics of unit graphics. There's a lot more in it, and we will discuss further in the next topic and even the sketch or whatever I said, is just a very basic one, right? And we just going to get into the details of it by next class. Okay.

Thank you.