Understand Shell and Rib Feature_creo Elements Pro

Beginner Guide to Creo Elements/Pro

MECHANICAL ENGINEERIN

www.mechanical360.net

MECHANICAL

ENGINEERING

360

Understand Shell and Rib Tool


formally Pro/Engineer

ECHANICAL ENGINEERING 360

www.mechanical360.net | Waqas Ahmad



formally Pro/Engineer

Waqas Ahmad


Shell & Rib Mechanical Engineering 360


Understand Shell Feature

Shell features remove surfaces to hollow out a design model, leaving walls

with specified thickness values. There are two parts for the creation of a

basic shell feature:

• Select Surfaces for Removal - Select the surface or surfaces you want to

remove from the model. You may decide not to remove any surfaces from

the shell, which results in the creation of a closed shell, with the whole

inside of the part hollowed out and no access to the hollow.

• Thickness - Specify the thickness of the model walls that remain.

You create shells in the design process to support your design intent.

However, be aware that several features could reference a shell created

early in the design process.

Shells can be created using the Lead or Follow workflow. You can use drag

handles or the dashboard to modify the thickness of the shell feature. The

Flip icon in the dashboard is equivalent to specifying a negative shell value.



Now perform a very simple exercise

1) First make a square with a side of 200 units and then make its

dimensions as shown in the fig below

That is just for our ease because in next excersie it will reduce our time of

completing the exercise.

2) After making above sketch extrude it up to 100 unit depth see the fig

below.



Now select the Top surface of the the part and click at the shell tool

.Be sure to select the surface either before clicking at shell tool or after

the clicking shell too.Make the thickness of our shell 15.

This complete the Shell Exercise.



Understand Rib Feature:

Ribs are typically used to strengthen parts. A rib feature is similar to an

extruded protrusion, except that it requires an open section sketch. The rib

also conforms to existing planar or cylindrical geometry when it is extruded.

After you select an open section sketch and set a thickness, Creo

Elements/Pro automatically creates the rib feature by merging it with your

model. The system can add material above or below the sketch, and the

thickness can be applied on either side, or be symmetric about the sketch.

The Rib tool enables you to create rib features faster than it would be for

you to create and sketch a protrusion.

To perform the Exercise use the part that we have created earlier .

1) Select the inner surface of the part and then click at to sketch an

Extrude feature.

2) Now in sketching window change the display to wireframe by clicking

at wireframe icone and sketch an other square.see the fig



3) After completing the sketch extrude it upto75 as shown in fig.

4) Now click at the “profile Rib” tool. Now we need to draw/select the

references for our rib sketch.At the Dashboard you can observe the

“reference” button will be red showing that something is missing or

incomplete for this feature.Click at reference button and then “define”

button.



When you will click at define button it will ask a Datum plane for sketching

.At this stage select the top datum plane and enter to sketching window.Now

in sketching window change the display to wireframe by clicking at

wireframe icone .Now in sketching window we have to select the

referance and then we have to draw the profile of our rib feature .click at

sketch tool in top level menu and then at “references”.

5) When you will click “References” two different dialog box will open.be

sure not to close them.

Just select the lines shown in dashed form below.These lines will be

the references of our rib feature.now you can close that dialogboxes.

6) Now draw a simple straight line That join line1 with line2.After this

just click at done button

1

2



7) Set the thickness 20 and click at done button and you are done.

Note: the thickness wil be limited by the references that we select.

For feed back contact me at [email protected]

Documents

Understand Shell and Rib Feature_creo Elements Pro