Drawing Commands: AutoCAD Mechanical 2013


Uploaded by Autodesk on 27.03.2012

Transcript:
Welcome to another Getting Started Video for AutoCAD Mechanical.
My name’s Matthias and this time I’ll show you some AutoCAD Mechanical drawing Commands
by enhancing this drawing…
…to make it look like this. In the end we’ll have a top view and a sectional view of this
gland.
You’ll also get used to work with layers in AutoCAD Mechanical.
Now let’s begin! I’ll start with adding a centerline. I click the command, select
the start and end point… and we have a centerline.
The Command we just used is special to AutoCAD Mechanical and comes with a big advantage.
Have you noticed the automatically created centerline layer? That’s where AutoCAD Mechanical
places all centerlines.
You don’t have to create or change layers yourself anymore. AutoCAD Mechanical does
all the Layer Management for you.
Now let’s say you want to change the properties of all centerlines at once or rename the layer
they’re on.
Then just click the “Mechanical Layer Management” Button on the ribbon or type “AMLAYER”
in the command line.
By the way, the letters “A” and “M” stand for AutoCAD Mechanical.
Now even if you change the name all centerlines will still be drawn on this layer.
Next I will show you another handy drawing feature - construction lines.
Drawing becomes a lot easier when you use some of them.
And in AutoCAD Mechanical there are quite a few options to choose from.
That means you’re not restricted to the Commands you might already know from AutoCAD.
Of course you can still use AutoCAD commands too, as AutoCAD Mechanical is built on top
of AutoCAD. But usually AutoCAD Mechanical commands are a bit more powerful and offer
more options when it comes to mechanical drawings.
Look what happens when I choose the Automatic Option.
I want the construction lines to be horizontal, pointing to the right.
I select my drawing, press Enter and I’m done.
All construction lines in AutoCAD Mechanical are also automatically drawn on the same layer.
Now it only takes one click to hide them.
Or display them.
And if I want to delete them later, I just have to click here.
With the help of the construction lines it didn’t take long to create the basic outlines
of the top view
Next I ‘m going to add a centerline cross to the circle.
I select the “centerline cross in holes” command from the centerline dropdown menu
and follow the instructions in the command line.
In no time we’ve created centerlines with the correct offshoot length from the circle,
according to the standard we’ve chosen for our drawing.
You don’t have to calculate them yourself and there’s no need to draw and trim lines
by hand anymore.
Now have a look at the layer the construction lines are on.
I didn’t change layers before I created the centerlines, but thanks to the layer management
in AutoCAD Mechanical, they are in the right place.
Let’s go on and add two 8 Millimeter through holes.
Rather than drawing circles, we will insert the holes from the content library.
I select the hole type, the view, the insertion point and the size. And this is far more than
just a circle.
For example I can now simply use the “PowerView” Command to generate the front view.
Finally let’s mirror the hole to the other side. I specify the mirror line and we’re done.
In the next step I’ll draw the inner wall of the part.
I work with symmetrical lines to do that.
First I select the centerline which defines the symmetry axis. Then I draw one half of
the wall while the other one is automatically created.
Next, let’s project the inner wall on the top view of the part.
I insert two more construction lines
…and draw the circle
But wait, the circle must be drawn as a hidden line.
In AutoCAD Mechanical you don’t have to change the line type to indicate that it’s
hidden.
Instead, you create a “Hide Situation” and choose which objects lie on top.
This feature is very handy, especially when it comes to more complex parts.
I only applied the hide situation to the top view, as I’ll now change the front view
to a sectional view. And we don’t need hidden lines for that.
I start with drawing a section line.
I select the end points of the section line.
…and label the section view
Last, I add a hatch. I choose the hatch type and simply click in the areas where I want
to insert it.
And that’s it, we’re done with our drawing.
If you want to learn more about AutoCAD Mechanical, you can watch another getting started video
or just play around with the commands for a bit.