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Design Process. Design Brief. It is basically a “summary” of the project. How to create a “Design Brief” State the Problem, underline key terms List the Constraints (limits) Brainstorm ideas. Draw up sketches, lists, etc. Select a Solution- draw final drawing and prepare 3d models.

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Design process
Design Process


Design brief
Design Brief

It is basically a “summary” of the project

How to create a “Design Brief”

  • State the Problem, underline key terms

  • List the Constraints (limits)

  • Brainstorm ideas.

  • Draw up sketches, lists, etc.

  • Select a Solution- draw final drawing and prepare 3d models.


Design process1

#4 of the design process states “Draw up sketches”

You must learn how to sketch so that you can complete the design process.

Design Process

State the Problem, underline key terms

List the Constraints (limits)

Brainstorm ideas.

Draw up sketches, lists, etc.

Select a Solution- draw final drawing and prepare 3d models.

Make a prototype.

Evaluate

Write up

Presentation to Client


Template
Template

Design Brief

(put problem here with key terms underlined)

Constraints

- -

- -

Brainstorm

(put all ideas here. Shape, size, function, materials,etc)

2 Possible designs

(Sketch 2 of your possible designs)


Sketching techniques
SketchingTechniques


Sketching
Sketching

Sketching is a freehand drawing. This means that it is drawn without the aid of any equipment. Sketches do NOT have to be excellent quality. They are rough.

Why do we sketch?

  • It is a fast and easy way to organize your thoughts and get an overall picture of the item you are sketching.

  • Helps minimize errors on the final drawing.


General sketching techniques
General Sketching techniques

  • Always make strokes from left to right and top to bottom.

  • Hold the pencil at a 30 degree tilt.

  • Rotate paper slightly

  • Use short, light lines


Sketching straight lines
Sketching Straight Lines

  • Mark the beginning and end points of your line with dots

  • Without touching the paper, make a few motion trails with your pencil to practice where the line is going to go.

  • Sketch very light, short lines (2 to 3 inches) between the dots

  • Keep your eye on where you are ending.

    Try it. Draw 2 dots 4 inches apart


Parts of a circle
Parts of a circle

Center

Radius

Diameter

Circumference


Sketching circular lines
Sketching Circular Lines

3 methods

  • Letter O method


Measurement lines and proportions

Line 1

Line 2

Measurement Lines and Proportions

Example

Without measuring the line, describe how long each one is in relation to the other.

When sketching objects, all the lines that make up the object are related to each other by size and direction. For a sketch to communicate effectively it must be drawn in the same proportion.

Line 1

Line 2

When sketching, you do not use a measurement scale.





Creating multiview sketches
Creating Multiview Sketches


Multiview Drawing

A multiview drawing is one that shows two or more two-dimensional views of a three-dimensional object.

Multiview drawings provide the shape description of an object. When combined with dimensions, multiview drawings serve as the main form of communication between designers and manufacturers.


Multiview sketching technique
Multiview Sketching technique

Create 3 views of the same object.

Front, Top and Right side.

Top

Right

Top

Front

Front

Right


Top

Front

Right



Width, Depth, and Height

All three-dimensional objects have width, height, and depth.

Width is associated with an object’s side-to-side dimension.

Height is the measure of an object from top-to-bottom.

Depth is associated with front-to-back distance.




Create a multiview
Create a Multiview

Make a Multiview of this!


This is what it should have looked like
This is what it should have looked like

Top

Front

Right



Top

Front

Right



Isometric sketches
Isometric Sketches

Isometric views portray objects in a true 3d perspective.

Approx. 30 degrees

Approx. 30 degrees



Look at this for a minute.

Do you see triangles or 3d boxes?


All lines must be drawn in 1 of 3 directions.

Can you see the pair of shoes in the cubby hole?



Can you see the flat surfaces on this sketch?

Sketch this in the top corner of your paper!


Step #1: Constructing The Box

They did NOT count the squares correctly on THIS drawing between the given figure and the one they drew.


Isometric Sketches

Step #2: Use points and construction lines to identify surfaces that are not parallel to the faces of the box.


Step #2: Outside Faces

They did NOT count the squares correctly on THIS drawing between the given figure and the one they drew.


Isometric Sketches

Step #3: Trace out the visible edges of the part with thick, dark object lines.


Step #3: Object Lines

They did NOT count the squares correctly on THIS drawing between the given figure and the one they drew.


Sketch

This!


Block technique
Block Technique

  • When sketching an object, visualize the object surrounded with an overall rectangle. Sketch this rectangle first with very light lines. Sketch the proper proportion with the measurement-line techniques.

Think of a

BLOCK of Styrofoam


Block technique1
Block Technique

  • Cut sections out or away using proper proportions as measured by eye, using light lines.

  • Finish sketch by darkening

    Lines and erasing unwanted

    Lines.

Cut Away 1st


  • Before you open Inventor:

    • In your “My Documents” folder, make a new folder and call it Engineering.

      Save everything we do in that folder!!


Make this part in Inventor.

Save as Junk1

Cut Away…


Make this on Inventor

Save as Junk2




Draw these

on Inventor

Save in Engineering Folder as Junk 3 and Junk 4


Create on

Inventor

Save as Junk 5, Junk 6, and Junk 7



Measuring

and

Lines



Lines
Lines

Visible Object Line

Hidden Line

Centerline

Extension Line

Dimension Line

76

Leader Line

Hole Center


Line conventions
Line Conventions

Dimension Line

Dimension Line

  • Dimension Lines: Lines that are used to show distance.

  • Arrows are drawn on the ends to show where the dimension line starts and ends.

  • The actual distance is usually located in the middle of this line to let you know the distance being communicated.


Line conventions1
Line Conventions

Extension Line

Extension Line

  • Extension Lines: Lines used to show where a dimension starts and stops on an object.

  • Used with dimension lines to properly dimension an object.

  • The line is 1/16” away from the part as to not get confused with the object lines.


Line conventions2
Line Conventions

Leader Line

Leader Line

  • Leader Lines: Leader lines are used to show dimensions of arcs, circles and to help show detail.



How to dimension
How to Dimension

  • A complete detail drawing includes multiviews and dimensions, which provide both shape and size description.


Symbols
Symbols

R

o

1.5

R 5.5

+

130o


Symbols1
Symbols

  • Diameter =

  • Radius = R

  • Degrees = oie. 15o

1.5

R 5.5

+

130o



Width

Height

Depth


Width

Height

Depth


Width

Height

Depth


Width

Height

Depth



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