1. Chapter 2 Design and Sketching
Mr. Colby

2. Aspects of Design What does is mean to “reinvent the wheel”?
Examples…?
Creativity vs. Design
Creativity is the combination of imagination, knowledge, and curiosity.
Design is the conception of an idea and its development, through graphic communication, into a practical, producible, and usable product or process.

3. Aesthetic vs. Functional Designs
Aesthetic – the look and feel of the product
Functional – successful operation of a product. Does it perform as intended?

4. Aesthetic vs. Functional Designs
Louis Sullivan a famous design architect said ”form follows function” What did he mean by this?
This means that while the function of a product is of primary importance, the form (aesthetics) of the product is integrated into the overall design and is not separate.
Examples?

5. Examples
iPod
Mountain bike brakes

6. Engineering Design A creative problem-solving process
Build upon prior success
Designers and Engineers work together
What does a drafter do?
The design must be functionally efficient, meet the design objective, and be aesthetically appealing.
Examples?

7. Linear Design Process Step 1 – State the Design Problem
Step 2 – Analyze Need
Step 3 – Set Objectives
Step 4 – Create Alternatives
Step 5 – Check for Feasibility
Step 6 – Select the Solution/Develop the Prototype
Step 7 – Get Feedback and Market Response
Step 8 – Draw the Design

8. Concurrent Engineering Design Model
Copyright © 2003 Glencoe/McGraw-Hill

9. Concurrent Engineering Design Model

10. Concurrent Engineering Design Model

11. Concurrent Engineering Design Model

12. Concurrent Engineering Design Model

13. Concurrent Engineering Design Model

14. Concurrent Engineering Design Model

15. Concurrent Engineering Design
IDEATION
REFINEMENT
IMPLEMENTATION
3D CAD DATABASE
What is Ideation? The design problem is identified.

16. Reasons for Sketching
To persuade people who make decisions about a product that an idea is good.
To develop a refined sketch of a proposed solution to a problem so that a client can respond to it.
To clarify a complicated detail of a drawing that had more that one view by enlarging it or by creating a simple pictorial sketch
To give design ideas to drafters so that they can do the detail drawing.

17. Continued
5. To develop a series of ideas for refining a new product or machine part.
6. To develop and analyze the best methods and materials for making a product.
7. To record permanently a design improvement on a project that already exists.
To show that there are many ways to look at or solve a problem.
To spend less time drawing, it is quicker to make a sketch.

18. Multiview Sketches One View vs. Two-view vs. Three view
One view drawing of a gasket
There are many products that can be described with one view and a note. A gasket or other thin, flat product can have a note giving the thickness, thus eliminating the need for all views except the front.

19. Two-View
Products that are symmetrical, conical, or pyramidal in shape can usually be described in two views.
Two View Drawing of a Cap

20. Let’s Draw A Desk!

21. Three-View Most Products require three-view drawings
While the front, top, and right side views are most frequently used, any other regular orthographic views could be used instead. In the figure below, the front, right and top views are used.

22. More than 3 views!
The designer can use any or all of the six normal orthographic views. The views used must present information that is not clearly shown by the other views. The object below (left) has hidden detail not seen from the front, top, or right. As a result, in addition to the traditional front, top and right views, a bottom view is needed to show the recesses.
SEE NEXT SLIDE

23. Pictorial View of Object
4 View Orthographic Projection
Object rotated 180 degrees

24. Pictorial Sketches
Width, Height, and Depth are shown in one view

25. Oblique Pictorial Sketching
In an oblique sketch, two of the axes are at right angles (90 degree). The third axis can be drawn at any angle to the other two.

26. Isometric Sketching
All axes are spaces 120 degrees apart.

27. Proportions for Sketching

29. References