Parametric Modeling Design and Modeling 2011 Project Lead The Way, Inc.

3D Modeling Steps - Sketch Step 1 Sketch Geometry

Sketch Geometry Line Sketch Tool

3D Modeling Steps - Constrain Step 1 Sketch Geometry Step 2 Constrain Geometry A. Apply Geometric Constraints

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

Features Environment Select Finish Sketch to switch to Features Environment From this view To this view

Extrusion Parameters Set Select Extrude from Create panel Extrusion Dialogue Box

Color Tool Choose color here

Summary Steps in Parametric Modeling Step 1 Step 2 Step 3 Sketch Constrain Geometry Extrude

Parametric Modeling Part 2

Adding a Feature to a Solid Model Step 1 Add Sketch Plane to surface on which geometry will be sketched

Create New Sketch Plane Sketch Button Sketch plane selected with left mouse click

Steps for Adding a Feature Step 1 Add Sketch Plane Step 2 Sketch Geometry

Sketch Geometry Add line to Front face Normal View selected with View Face tool or by clicking on front of View Cube

Steps for Adding a Feature Step 1 Add Sketch Plane Step 2 Sketch Geometry Step 3 Constrain Geometry

Constrain Geometry

Steps for Adding a Feature Step 1 Add Sketch Plane Step 2 Sketch Geometry Step 3 Constrain Geometry Step 4 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 Step 4 Create Sketch Plane Sketch Geometry Constrain Create Feature

Let s see it again this time we will create a hole feature.

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 on 3D Model tab

Completed Hole Feature

Model with Hole Feature 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 Step 4 Create Sketch Plane Sketch Geometry Constrain 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