Technical Design 3

2D Sketches

Drawing / Editing Tools

Dimension (use to set values or create parameters)

Parametrics

Boundaries; create relationships (equation) between dimensions and parts

F(x)

Constraints

Restrictions; lock in behaviors/relationships between parts

File Types

Project - Store other types of files for a particular project you’re working on

Part.ipt - Any 2D or 3D objects you create using CAD tools

2nd most like AutoCAD

Assembly.iam - Take multiple parts files (or copies of them) to create a full model of them interacting

Drawing.dwg (AutoCAD)/.idw (Inventor) - Traditional 2D drawing; can be opened in AutoCAD (if using right file)

Behaves most like AutoCAD

Can automatically import 2D drawings of parts in assemblies

Presentation - Take a 3D model, and simulate movement

Think of a video

Browser - Left panel for all the objects/features you’ve created or can be manipulated

Toggle visibility (Alt+V) for objects

Ie. using extrude on 2D objects will outline the original object appear alongside the 3D

Edits made in the original 2D object will then update the 3D object it’s based on

Loft - Will connect 2 (or more) 2D objects not on the same plane together into one cohesive 3D object

Ribbon - Top section with your tools

iProperties - Find features and calculations such as area, mass, and volume

Patterns = Arrays in AutoCAD

Everything else is similar to as in AutoCAD

Inventor more focused on 3D design; 2D tools simpler

Construction Lines - lightly dashed; temporary--disappear after switching to 3D

Guidance or notes

Line of symmetry, Angles, Extensions to Line things up

Center Lines - Mark midpoints, centers, and center axis

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Most useful when creating Solids of Revolution

Constraints - Limitations on your drawing that set up relationships between its parts

Ie Lengths, Angles, Coordinate positions

Dimensions - set up lengths, distances, angles, and formula relationships

Geometry Constraints

Coincident: Makes two objects meet at the same point

Parallel

Tangent

Colinear

Perpendicular

Concentric: Makes two objects have the same center

Horizontal

Symmetrical

Fix: Objects cannot be edited

Vertical

Equal

Smooth: Turns sharp corners into more organic shaped (like fillet)

When a sketch turns black, it is fully Constrained

• Its size, shape, and location been completely defined: No more edits possible

3D Models

Extrude

Closed area to create depth

Thicken

Modify a body’s face

Revolve

Closed area and spin it around an axis

Bodies

3D pieces of a part file of any geometry

2D closed area to select

A direction

Distance

Extrude creates in a direction normal to the area

If your sketch is on XY plane, the extrusion occurs at Z plane

Taper

An angled cut ( _/ )

Combine

Also visible in Extrude and Revolve - Relate/modify bodies that overlap

Join

Cut

Intersect

New Body - New solid

New Component - For assemblies

Combine your new solid with another that already exists. Remove pieces of a body using the solid you’re creating

(Re)Introduction to Drafting: Drafting and the Drafter

Objective

Define the role of drafting

Explain purpose of technical drawings

Describe the design process and its steps

Identify different types of problems

Drafting

Clear and understandable drawings make planning and building a smooth process. (MAKE YOUR WORK MAKE SENSE)

When making a design, communicate with those who are actually building your project.

More experienced

Hands-On approach