Create and define sketches

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create and define sketches.

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After completing this video,

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you'll be able to create a new sketch on a plane or plane or face,

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create a new construction plane,

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edit a sketch, modify sketch display options,

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apply dimensions to a sketch, apply and remove sketch constraints,

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link user parameters and sketch dimensions.

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Create user parameters and apply math operators and user parameters

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Infusion 3 60.

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We want to get started with the supply dataset angled block dot F three D.

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The first thing that we want to note is inside a fusion 3 60 in the browser section.

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We have a bodies and the sketches folder.

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The body that we have here is called body one and the sketch is sketch one.

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If we take a look at the bottom and the timeline,

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we can see that sketch one was used to create extrude one

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and then a chance for was applied to create the angled face.

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We're gonna be taking a look at this data set

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so that we can learn how to create and manage sketch

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dimensions and constraints for sketch entities and talk about the

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different ways in which we can interact with this model.

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The first thing that we want to do is note at the very top in our tool bar,

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we have a create section,

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a modify section and our construct section construct is a

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place where we can come in and create different planes.

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Were going to start by creating an offset plane.

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We're going to select our angled face and use the on

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screen manipulator to drag this out to a distance of 50.

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We can also manually enter a value or change the extent to object.

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If we want to use another solid body or surface in this design

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to control the location of that plane.

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We're gonna say, okay

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planes and planes or faces can be used to create new sketches

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for now let's note that the new plane is inside

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of a construction folder and we're going to hide that.

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Now we want to talk about how we can create our new sketch.

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This can be done by selecting a plane inside of our browser,

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right clicking and selecting, create sketch or by selecting,

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create sketch from our toolbar.

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We can also do this by selecting a plane or face,

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right clicking and selecting create sketch or once

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again by selecting create sketch from our toolbar.

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We can also invoke the create sketch command first

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and then select our plane or plane or face.

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Any of the options will work just fine, depends on which workflow is best for you.

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Now that we have a plane or face selected,

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this is automatically going to create what's called projected geometry.

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If I were to hide the solid body,

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we can see that we still have this profile of the face that's created.

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This is known as a profile and we can toggle

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this on or off inside of our sketch palette.

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We can also toggle on and off points, dimensions,

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constraints and projected geometry.

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Also note that every sketch infusion 360 can be turned into a 3D sketch

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but all sketches must be started on a plane or

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plane or face even if they are a 3D sketch.

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The sketch palette also gives us options to toggle on and off, snap or slice,

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which will create a temporary section view.

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We can leave the sketch grid turned on or off.

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We can toggle the look at which creates a normal view and

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we can toggle any line type to be construction or center line.

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Let's bring back the solid body as we begin to create our sketches.

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Also note that we're currently looking at this with an orthogonal view.

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The current setting is Ortho graphic but by

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default will be on perspective with Ortho faces,

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which means as we rotate the model around will be in a perspective

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view until we're snapped to a default view or a current sketch.

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Now that we understand some of the basics of

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starting our sketch and working with the sketch palette,

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let's create some sketch entities.

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We'll begin by going to create and selecting our circle,

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going to place a circle and as we begin to drag this out,

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we can see the diameter value is changing.

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I'm going to manually enter eight on the keyboard and hit enter

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this will end the circle creation tool and

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it will apply this eight millimeter dimension.

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The circle can still move around because we haven't

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told it where it's located inside of our space

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but the diameter is going to be fixed

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To locate it.

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We're going to use the sketch dimension tool selected centre point and then we'll

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select the left edge and we're gonna manually enter a value of 10.

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We're going to repeat this process. But this time we're going to select the vertical

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and create this vertical dimension

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instead of manually entering a 10 millimeter dimension,

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I'm going to select the original

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which automatically comes up as D eight.

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This means it's the eighth dimension that was created inside of this part.

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If I had enter we can now see that 10 millimeters has

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been applied here but there's an FX in front of it.

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The fX means that there is a

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parameter or linked relationship between these dimensions.

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If I double click on this, we can still see that it says D eight.

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If I change the 10 millim dimension to let's say eight,

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we can see that both dimensions will change.

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Let's go ahead and create another center diameter circle off to the right.

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In this case I'm not going to place a dimension

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Instead, I'm going to go to my sketch dimension tool

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and I'm going to link this to the eight

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millimeter diameter which is D seven and hit enter

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and I also want to place the dimension to the right edge.

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Once again, I want to link this here. Hit enter and now those are linked.

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We could also create a vertical dimension but we

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have other tools such as constraints at our disposal.

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In this case,

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a horizontal vertical constraint between the center points

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of both circles will maintain their relationship.

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This means if I go back to this original eight millimeter

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dimension after hitting escape to get off my constraint tool,

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I can change it to any other value.

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And you can see that all the dimensions are changing

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That 15 mm controls the width from each edge.

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It also controls the height of both

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because we're using that horizontal constraint.

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If you decide that you don't want any of the constraints,

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you can always select them and hit delete on the keyboard.

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Now, if I change this 15 back to eight,

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you can see that the vertical position of this circle hasn't changed.

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It's always going to maintain its horizontal position,

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but in order to have the vertical position,

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we need either a dimension or constraint.

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Once again,

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I'm going to go ahead and place that horizontal vertical

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constraint and hit escape to get off my constraint tool.

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Let's go ahead and explore creating a two point rectangle.

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I'm going to place a two point rectangle somewhere inside of this space.

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Then I'm going to right click and select OK.

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Using my dimension tools,

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I'm gonna dimension the distance between this left edge and

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once again I'm going to click that eight millimeter dimension to

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make them equal notice when I do this that the right edge is now off the side of my part.

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This means if I were to apply a dimension here, it would be in the wrong direction.

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If I simply clicked okay to link these two together,

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we can see that it's in the wrong position so I'm going

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to hit escape and I'm gonna use control Z to undo.

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Then I want to double click this once more.

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Link that value and then note that I can drag the

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outside of this into my part before applying that dimension.

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Once again I'll apply the dimension

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And this is going to be equal to that eight.

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We could also use constraints in this case.

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For example, if we were to select and delete this dimension,

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I could take this edge

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control or shift, select the center point of my circle. And make those coincidence.

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This means that this line will extend all the way

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until it hits the center point of that circle.

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You can test this by again adjusting this dimension.

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If we make it 10 you can see how everything adjusts or if we put it back to eight,

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everything moves back.

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Let's go ahead and place the dimension between the

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bottom edge here and the bottom edge here.

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We can also use math operators inside of the dimension.

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Dialogueues for example,

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I can divide this by two and you can see here now that the value is four.

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Once again, if I change this to 10, that value is going to be five.

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If I change it back to eight,

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it goes back to four because it's

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maintaining its relationship with the linked dimension.

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However,

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we are using math operators such as divided by two to get the overall height.

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The last thing that we want to do is give this a vertical dimension.

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In this case this value is not linked to anything else. I'm going to manually hit 25.

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It's important to note that as we begin to use linked dimensions between

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other sketch elements that if we have any dimensions that are not linked,

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for example this 25 as we increase or change these values,

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we could get into a situation where sketch entities are overlapping.

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This is important because if we have these overlapping regions

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this creates additional sketch profiles.

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The sketch profiles can be used for things like extrude.

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So we always want to make sure we understand the extent of which we

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want to change these dimensions and how it's going to affect our overall design.

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A better way to dimension a sketch like this is to make

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sure that we do maintain a relationship between all the entities.

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If we do feel like we're going to make changes,

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let's go ahead and finish the sketch

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and then let's take a look at creating an extrude.

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I'm gonna use the extrude tool,

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I'm going to select all of these features and just simply pull them in and say, okay,

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those extrude are creating a cut into our part.

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And while we're specifically talking about sketches at this point,

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this should help us drive home the fact

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that we can make adjustments to these sketches.

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Let's go into our modified drop down and select change parameters.

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I'm going to minimize this and bring this down a little bit.

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So that way we can see our part, go ahead and bring the part off to the right hand side.

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When we take a look at this part,

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all of these elements that were used in

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that extrude were driven by sketch dimensions.

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These can be found under model parameters and we can filter down until the sketch,

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we can see here that D seven which was the diameter of that

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circle is eight millimeters D eight was the offset from the edge.

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If I increase this to 10,

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the entire model is going to update.

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If I change this back to eight we can see it returns to its original shape.

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Another thing that we can do inside of our

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parameters dialog is create what's called a user parameter.

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In this case, I'm going to create a new one called whole D I A for diameter.

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We aren't able to use spaces here.

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So if you want to separate your words,

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you need to do it with capital letters or underscores.

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Next I'm gonna set this value equal to eight and hit enter,

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I'm gonna do this one more time and I'm gonna call this one edge offset

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and I'm gonna set this equal to a value of 10 for right now.

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These values can now be linked to other dimensions

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for example inside of here for our expression I can

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start to type in hole diameter and link this

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to the parameter that we created and hit enter.

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This means that if I change my whole diameter it's

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going to update my sketch and subsequently update the features.

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We can also link these back in the sketches or in features.

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We can edit the sketch by selecting it right clicking and hitting.

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Edit in both the browser or inside of the timeline.

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And we can also double click it as well to get into edit.

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If we wanted to link the value of the edge offset we can double click this

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and begin to type in E for edge offset and we can see a parameter list.

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If we select offset and hit enter we can see

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that we now have increased that value to 10.

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Once again these values can be changed by

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going to our modify change parameters and modifying

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those values in here for example increasing them

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to 12 or reducing them back to eight.

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Those values can also be changed in the sketch.

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If we show our sketch right click and show our sketch dimensions,

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we'll be able to see those dimensions visibly on

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the screen without having to edit our sketch.

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If we double click on this, we can see that it's linked to our edge offset.

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I'm gonna hit enter and I'm going to double click on this one,

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noting that it's linked to D eight.

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If we double click on the hole diameter, we can see that it's linked to hole diameter.

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Any of these values that were linked to a

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user parameter should be changed through the parameters,

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dialog.

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However,

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any dimensions that were manually entered here can be adjusted on

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the fly by simply double clicking and making the edit.

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We can always go back and hide the sketch as well

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at this point let's make sure that we do save this data set before moving on.