Lecture Autodesk inventor: Part creation

Lecture Autodesk inventor: Part creation. The main contents of the chapter consist of the following: Sketched features, sketched feature operations, sketched feature terminations, base feature, adding sketched features, another sketched feature.

Part Creation

Sketched Features

Sketched features include: Extrude

Revolve

Sweep

Loft (Blend)

Others (e.g., Rib, Coil)

Sketched Feature Operations

Boolean operations are included as  part of the feature construction. 

Operations include:

Join (Union)

Cut (Subtract)

Intersect

Sketched Feature Terminations

To Next – extrude to next 

surface

From To – extrude from one 

existing surface to another

To – extrude to selected 

surface

Angle – revolve through a 

certain angle

Full – revolve 360 degree

Through (All) – extrude all the way through a part Blind (Distance) – extrude to a fixed depth

Base Feature

The base feature is 

the first model 

feature to be 

created

Other features are 

created using 

constraints that 

locate them relative 

to the base feature

Base  Feature 

Adding Sketched Features

Establish a sketch 

plane (share sketch)

Sketch

Constrain

 Some constraints 

used to relate new 

feature to base 

feature

Create Feature

 Extrude, Join

Another Sketched Feature

New sketch plane

Create Feature Extrude

Cut

Sketch

Constrain

Dimension

Sketched Feature Requiring a  Work Plane

If there are no convenient 

faces that can be used to 

orient a sketch plane, a work 

plane must be created

Sketch, constrain

Create feature Extrude, Join

Placed (Referenced) Features

Placed features are 

features that do not 

require a sketch

Examples include 

holes, chamfers, 

fillets and shells

NOTE: In Inventor, 

holes require that 

center points be 

placed on sketch 

plane prior to 

feature creation

Parent­Child Relationships

Parent­child relationship refers to way in which  one feature is derived from, and consequently  dependent upon another feature

Child must appear below parent in feature tree Base feature is parent to all other features

Parent deleted  child deleted

Feature Modifications

Part Creation

Cul De Sac