Discover how to create the upper stem of a scooter, referred to as Stem B, using various commands in a specific 3D modeling software. This step-by-step guide will walk you through the process of constructing Stem B, creating sketches, and refining the design with different features and dimensions.
Key Insights
- The creation of Stem B involves activating the top line of the browser, going to the Create menu, selecting New Component, and naming it Stem B.
- Sketches are initiated to design different parts of Stem B. To create an upper line, the line command is started in the center of the front wheel hub, then extended by 400 millimeters at an angle of 106 degrees.
- The final design touches include creating a ring sketch at the top of Stem B, revolving the rectangle around the axis line, and adding fillets to the top and bottom of the ring for a smooth finish.
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Now let's create the upper stem for our scooter. We'll call it Stem B. We'll begin by minimizing our Stem A component and activating our top line of our browser. From there, we'll go to the Create menu and select New Component.
We'll give it a name and we'll call it Stem B. We'll double check that the parent is set to our top line of our browser and click OK. So here we go. We've got Stem B. Let's go ahead and go to our Construct menu and select Offset Plane.
We'll click that Center Plane and No Offset Distance and click OK. We'll expand our Stem B folder. Expand the Construction folder.
Find that unnamed plane we just created and we'll call it Stem B Center. Stem B Center. With that, we can create our sketch.
We'll go back to the Create area and select Create Sketch. We will select our Stem B Center Construction Plane and we'll begin the line command. We'll start right here in the center of our front wheel hub.
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Click one time. Pull our cursor up and we want to type in this time 400 for 400 millimeters. Click the tab on our keyboard and we'll do 106 for the degrees.
- With that, we'll click Enter. We'll select that line we just drew.
Right-click and change it to a construction line. It's just there to get us up into that partially up into that first tube. Now we'll create another line.
We'll click one time where we left off, go up and to the left and we'll get those fusion constraints, the parallel sketch constraints. We can type in 400 and click Enter. There we go.
Now we have the upper line for our Stem B. With that, we'll go ahead and click Finish Sketch. Now look in the Create menu and find the Pipe command. For our path, we'll select that upper line.
For our section size, we'll type in 26 and our section thickness, we'll do 4. Let's double check that we have hollow selected. That allows us our section thickness and we want the operation to be New Body. With that, we'll go ahead and click OK.
We'll zoom in to make sure everything fits. Essentially, this tube should fit just inside of Stem A. Looks pretty good. So with that, we want to create another little ring here at the top.
We're going to again create a sketch. We're going to go back to the Create area, click Create Sketch. We want to place that sketch on our Stem B center construction plane and we want to get to the top of this tube.
We'll do Line. We'll go right to the center of our hub, click one time, pull our cursor straight up and we'll type in the dimension 510,5-1-0 and hit TAB and we'll do 106 for our degrees and click Enter. That gets us right to the top of Stem A and we'll select this line we created, right-click and we'll make it a normal center line.
We want it to be a center line. It'll be the center of our revolve. We'll click Normal Center Line and we'll zoom in.
We want to initiate our Line command again. We'll click right at the top of that center line one time and pull our cursor to the right. We'll notice that we get a little constraint for squareness.
We've got that perpendicular constraint and we'll type in 12 for 12 millimeters and click Enter. There we go. Now we can click our Line command.
Click once where we left off. We'll go up and this time we'll go four millimeters up, Enter. Click our Line command again.
This time go to the right. Make sure that perpendicular constraint is showing up for us and we will click on… Let's go ahead and type it out. We want to type in this time we'll go 6 for 6 millimeters, Enter, and we'll complete that rectangle.
We'll click, go down, we'll go down the 4 and then back to where we started here to here, 6 millimeters. We have our rectangle. Now I'm noticing that the 12 is a little bit shy of where I'd like it to be.
So let's go ahead and select that center line, right click and click the Fix Unfix button. That will fix it. Now I can double click where it says 12, change that to 13, and click Enter and that moves that ring out just a bit farther where I'd like it to be.
With that, everything looks pretty good. I will go ahead and click Finish Sketch and I will open up our Sketches folder. We have that Sketch 1, that's the STEM B sketch and our Sketch 2 here, that is our ring sketch.
We'll call it Ring Sketch. Now we want to go to the Create menu and select the Revolve command. We want to select our profile here, which is our rectangle and our axis will be our axis line.
We created that center line. Now we want to make sure that our operation is set to New Body. We don't want it to join to anything.
We'll do New Body, and then we'll click OK. From here, we want to go back to the Modify area and select Fillet. We'll click the top of that ring and the bottom of the ring and we'll give it a fillet.
We'll just do one millimeter fillet and click OK. With that, we have a couple of bodies to name. We'll open up our Bodies folder.
Body 1 is our STEM B and Body 2 is our ring. We'll click the Home on our ViewCube. See the result.
Everything looks pretty good. Let's activate that top layer. In our browser, to see everything together, we'll see we have our STEM B, we have our ring, and everything looks pretty good.
Let's go ahead and smash that Save button.
