Engineering Class

Describe two methods available in Autodesk Inventor to modify the dimension values of parametric sketches.

1. In the sketch, double-click the dimension 2. -Right-click on (feature, select show dimension, double-click to change.

List and describe three differences between parametric modeling and traditional 2D Computer Aided Drafting techniques.

1. One is 2D the other is 3D 2. Traditional 2D has no relationship to component ponometic doesn't 3. Inventor= size before shape, CAD= shape before size

List and describe three basic Boolean operations commonly used in computer geometric modeling software.

AUB (union)A^B(interception), A-B(cut)

How can we confirm that a sketch is fully constrained?

Bottom right shows "fully constraint", change color as sketch, Auto dimensions

What determines how a model reacts when other features in the model change?

Change based on relationship.

What does CSG stand for?

Constructive Solid Geometry

What is the main difference between a CUT feature and a HOLE feature in Autodesk Inventor?

Cut can be done through sketch and be any shape. Hole is a feature only in cylinder shape

How do we distinguish between derived dimensions and regular dimensions on the screen?

Derived has parenthesis, regular doesn't.

How do we control the size of a feature in parametric modeling?

Dimensional Constraint

What is the difference between dimensional constraints and geometric constraints?

Dimensional is size. Geometric is shape.

When extruding, what is the difference between Distance and Through All?

Distance is a set number. Through all, goes through everything.

Describe the steps to rename existing features.

Double-click on name of feature.

What are stored in the autodesk Inventor History Tree?

Features

Describe the procedure to Display/Edit user defined equations.

Manage -> Parameters-> edit f(x) there

List and describe three different geometric constraints available in autodesk Inventor.

Parallel, Interception, Lock(show symbol), Tangent

What is the main difference between a rough sketch and a profile?

Profile is in-closed shape w/o gap and self-interception.

Describe the advantages of using parametric equations.

Related dimensions change according to each other.

How do we display and examine the existing constraints that are applied to the sketched entities?

Right click -> show all constraints.

Describe the history-based part modification approach.

Right click on feature, "Added feature" or "Sketch"

What is the first thing we should set up in Autodesk Inventor when creating a new model?

Select units (measurements)

List two of the geometric constraint symbols used by Autodesk Inventor.

Tangent, Parallel, Perpendicular, Lock

Does Autodesk Inventor allow us to build partially constrained or totally unconstrained solid models? What are the advantages and disadvantages of building these types of models?

Yes, advantages fully control entire sketch. Disadvantage, lost of freedom

Can we delete an applied constraint? How?

Yes, click on the constraint ->Press Delete

Which Boolean operation keeps only the volume common to the two solid objects?

interception (A^B)