3D Modeling #2: Quick introduction to make an object

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Blog entry by oldnovice posted 12-05-2012 07:03 AM 2521 reads 1 time favorited 1 comment Add to Favorites Watch
« Part 1: Starting solid modeling Part 2 of 3D Modeling series no next part

After the tutorial dialog is closed, your screen should look close to this!

An Empty Workplane

The transparent green sheet in the main window in a workplane. Any lines or shapes, construction or geometry can only be on workplanes.

First we need to see where and how to get construction or geometry lines and/or shapes. Below is the upper left section of the screen. Notice the TAB is Modeling and the balloons show the two menus for construction and geometry lines/shapes

Ballooned Construction and Geometry lines menu

The red balloon encircles the construction line drop down menu while the black balloons encircle the geometry lines menus. I my case I have added the extra menu shown in the lower balloon and, as with all features, the menus and screen tools can be customized for your own use.

Placing a construction line on the workplane is quite simple. I always start a project on a new empty workplane with a vertical and horizontal pair at location 0,0. To do this, click on the construction lines, the top item in the construction items menu as shown below

Selecting the cross for a horizontal and vertical line

Now before clicking in the workplane, enter a 0,0 and hit return! Don’t worry about having the cursor in an entry box as Creo knows to expect an entry and where to find it. Notice the a pair cross hair lines have been created at the origin of 0,0 but there are still a pair under the mouse that still move with the mouse. To finish this task, move the mouse to the bottom of the screen and click on the check mark that ends this command. The cross hair lines are now gone!

Quitting a command

Now lets create some parallel construction lines, just like in drafting from high school, for starting some geometry lines.

Selecting a parallel construction line

Enter 24, hit enter and click on the vertical line. The workplane grows out of view not to worry, the line is there.
Now enter 16, hit enter and click on the horizontal line. Again, the workplane grows out of the viewable area! Now end the command, same as before, by clicking on the check mark again!

Click the right mouse button and select Fit as shown below.

Fitting the workplane back to the screen

Now the screen should look like the following!

With the workplane at this angle it is difficult to see the the parallel lines are actually at the dimension of 24 and 16 as were entered. To see them properly, again click the right mouse button and select view by curr WP and Fit as shown below.

Fitting the workplane to the screen

The workplane should is now front and center and straight on so that the differences between the 24 inch line and the 16 in line are now obvious.

The fitted workplane.

The last item for this session is creating a 3D object.

Selecting to create a rectangle.

Click on the rectangle selection as shown above and select one of the intersection to drag the rectangle to the intersection diagonally from it and when you reach the diagonal intersection, click the left mouse button followed by the end command check mark click.

Start dragging the rectangle

The completed rectangle on the workplane.

We have gone this far, lets just make a piece of 16” X 24” wood!

Tilt the workplane using the center button/wheel on the mouse. This is not required but it makes the process easier to see!

Mouse to the pull menu on the tool bar as shown below.

Select the linear pull from the drop down

You will see a lot of dramatic changes on the screen as shown below that will need some explaining!

The linear pull screen.

The first thing is that the rectangle is now filled with green indicating that is the area to be pulled (extruded as it was previously called). Secondly there is an arrow in the lower left corner indication the direction of pull. And lastly the is a dialog box that need more explanation.

The pull dialog box

Part is the first item in the dialog box and Creo defaults to /p1 and sequentially p2 … as many parts as you create. For now, leave it as /p1. Later we can name the parts as we see fit for or project!

Workplane is identifying the current active workplane as there can be many workplanes on the screen at one time but only one can be active.

Selection has been defined by the geometry rectangle that we created.

Operation is automatic because however, we can also select to remove material.

Linear has been selected and can still be changed at this time, leave it at linear.

Distance has a number of options as an object can be pulled to another face, another part, another plane! Leave it as is for now!

Distance followed by a yellow box allows entry of a value for our thickness so we enter 15/32 and hit enter.

Direction allows the part to be pulled in front of the workplane or behind it. Change this to -W by the drop down and notice that the arrow in the lower left now changes direction.

Now click the check mark on the top left of the dialog box, which does the same as the other end command check box used a number of time before, and we now have a 16” x 24” x 15/32” piece of wood. Using the middle button/wheel on the mouse we can now move the wood, rotate it see behind it.

To hide the workplane and get a better view, go to the structure browser and click on w1 so the check mark is gone and the workplane is hidden. The Structure Browser is a list of all parts, assemblies, and workplanes that are in this session of work. It is organized much like a directory in that assemblies will contain all parts in that assembly. This is useful organizing tool when making something with a lot of sub assemblies or parts!

Hiding the workplane

Lets save this work for now by using the file menu as with most programs.

Click on file, give the file a name (the extension is preselected as .pk2 by Creo).

An error occurred because I did not select which items I want to save!

To select the items to save, use the selection at the top of the save dialog box

Selecting all objects

In this case all objects as there are only two, the 24” x 16” x 15/32 piece of wood and the workplane!

By the way, I can say 24” x 16” x 15/32” because Creo defaults to inches unless the user sets it up to default to metric.

Close Creo until the next session!

-- "It's fine in practise but it will never work in theory"

1 comment so far

View DeLayne Peck's profile

DeLayne Peck

669 posts in 3286 days

#1 posted 12-05-2012 09:50 PM

Wow! And I have trouble with Sketch Up.

-- DJ Peck, Lincoln Nebraska. Lord, keep your arm around my shoulder and your hand over my mouth.

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