Parametric Modeling
3D Modeling Steps - Sketch
Step 1 Sketch Geometry
(use the “line” tool today)
You are making a four-sided shape
that is not necessarily a square at first.
Next, you will use
the “parallel” and “perpendicular”
GEOMETRIC CONSTRAINT TOOLS
to make it a rectangle.
Sketch Geometry
Line Sketch Tool
3D Modeling Steps - Constrain
Step 1 Sketch Geometry
Step 2 Constrain Geometry
A. Apply Geometric Constraints
(try perpendicular and parallel)
Geometric Constraints Applied First
Geometric Constraint Tools
What do you think we do next?
3D Modeling Steps - Constrain
Step 1 Sketch Geometry
Step 2 Constrain Geometry
A. Apply Geometric Constraints
B. Apply Dimension Constraints
Dimension Constraints Applied Second
Dimension Constraint Tool
The geometry that has been
constrained is a profile of an
object.
3D Modeling Steps - Extrude
Step 1 Sketch Geometry
Step 2 Constrain Geometry
A. Apply Geometric Constraints
B. Apply Dimension Constraints
Step 3 Extrude the Object from the Profile
A. Change View to Isometric (Home)
Profile Changed to Isometric
Right mouse click, select Home View or use
shortcut key F6 or Click on Home icon by View Cube
3D Modeling Steps - Extrude
Step 1 Sketch Geometry
Step 2 Constrain Geometry
A. Apply Geometric Constraints
B. Apply Dimension Constraints
Step 3 Extrude the Object from the Profile
A. Change View to Isometric (Home)
B. Switch to Features Environment
Features Environment
Select Finish Sketch to
switch to Features
Environment
From this
To this
3D Modeling Steps - Extrude
Step 1 Sketch Geometry
Step 2 Constrain Geometry
A. Apply Geometric Constraints
B. Apply Dimension Constraints
Step 3 Extrude the Object from the Profile
A. Change View to Isometric (Home)
B. Switch to Features Environment
C. Preview the Extrusion
Extrusion Parameters Set
Select Extrude from Create panel
Extrusion Dialogue Box
3D Modeling Steps - Extrude
Step 1 Sketch Geometry
Step 2 Constrain Geometry
A. Apply Geometric Constraints
B. Apply Dimension Constraints
Step 3 Extrude the Object from the Profile
A. Change View to Isometric (Home)
B. Switch to Features Environment
C. Preview the Extrusion
D. Apply Extrusion
Profile Extruded
Choose color here
Summary
Steps in Parametric Modeling
Step 1
Sketch
Step 2
Constrain Geometry
Step 3
Extrude
Parametric Modeling
Part 2
Adding a Feature to a Solid
Model
Step 1:
As we have practiced, we can add
a Sketch Plane to the surface
on which some additional
geometry will be sketched
by clicking on that surface and
choosing “new sketch”
Create New Sketch Plane
Sketch Button
Sketch plane selected with left mouse click
Steps for Adding a Feature
Step 1:
Step 2:
Add Sketch Plane
Sketch Geometry…
We can use the line tool again
to draw the desired shape.
Sketch Geometry
View Face
Normal View selected with View Face tool
or by clicking on front of View Cube
Steps for Adding a Feature
Step 1:
Step 2:
Step 3:
Add Sketch Plane
Sketch Geometry
Constrain Geometry…
We can dimension from any
location on any object line
(a POINT) to another location
(different point) on another
object line
Constrain Geometry
Steps for Adding a Feature
Step 1:
Step 2:
Step 3:
Step 4:
Add Sketch Plane
Sketch Geometry
Constrain Geometry
Create Feature
Feature Parameters Set
Choose cut
operation here
Isometric (Home) view selected,
Extrusion dialog box set
Feature Created
Summary
Adding a Feature to a Solid Model
Step 1
Step 2
Step 3
Create Sketch Plane
Sketch Geometry
Constrain
Step 4
Create Feature
Let’s see it again…
This time we will create a hole feature.
We will use a POINT (or center point)
as an anchor for the hole we will draw.
Rotate Model
View Cube
Dynamic Rotation
Rotate model with Dynamic Rotation tool or View Cube
Step 1 Create New Sketch Plane
Step 2 Sketch Geometry
This tool used to…
…create center point geometry
Step 3 Constrain
Step 4 Create Hole Feature
Hole Feature selected from Modify panel
Completed Hole Feature
Model with Hole Feature (skip this step?)
Hidden Edge Display
Model in Isometric view with hidden edges displayed
Summary
Adding a Feature to a Solid Model
Step 1
Step 2
Step 3
Create Sketch Plane
Sketch Geometry
Constrain
Step 4
Create Feature
Why Parametric Modeling?
Determine the shape and size of the geometry
at any time during the design process.
This part should
be 5 in. long, not
3 in. How can we
fix this without
redrawing it?
Why Parametric Modeling?
Benefits
– Shape before size
– Geometric and dimension constraints used to
capture design intent
– All files can be quickly updated
– Existing data can be used for new designs
– Quick design turn around
Show your teacher…
• Show your teacher your final model
• You may be asked to demonstrate
something using Inventor
• Complete your conclusion questions
• Put your complete assignment in the
correct place before you leave class and
ask for permission to begin the
SketchPlaneCube assignment