Engineering Design and Communication

These flashcards cover essential concepts related to engineering design, graphics communication, and tools used in drafting.

What are some required skills for design engineers?

Ability to identify and simplify problems, creative skills, sound technical knowledge, sense of urgency, analytical skills, sound judgement, decisiveness, open-mindedness, ability to communicate, negotiating skills, supervisory skills.

What is graphics communication in engineering?

An effective way of communicating technical ideas and problem solutions, mostly graphically based.

What are the major activities involved in engineering?

Engineering activities are divided into major activities such as design, analysis, and communication.

What does the engineering design process involve?

It's how engineers and technologists communicate as they design a new product, including concept, visualization, sketching, modeling, and creating detailed drawings.

What characterizes the traditional design process?

It is a linear design process where each step is sequential, with the possibility of returning to previous steps, involving iteration.

What is Concurrent Engineering (CE)?

A non-linear team approach that integrates input, processes, and outputs from the beginning, involving design and production engineers, among others.

How does Concurrent Engineering differ from traditional design?

CE gets everyone involved in the design process, including customers, indicating an integrated activity with overlapping circles.

What is Computer Aided Design (CAD)?

Software and hardware that replace traditional hand tools in creating models and technical drawings, providing technical information graphically.

What are the different grades of pencils used in drafting?

Hard grade leads (4H to 9H), medium grade leads (3H to B), and soft grade leads (2B to 7B), with higher numbers representing harder or softer grades.

Alignment of Features

Every point or feature in one view must be aligned in any adjacent view

Distances in Related View

Distance between any to points of a feature in related views must be equal

True Length and Size

when the lines of sight are perpendicular to the feature

Foreshortening

when the lines of sight are not perpendicular to the feature

Configuration of Planes

Areas of the same feature will always be similar from one view to the next, unless viewed on edge

Parallel Features

will always appear parallel in all views

Edge View

Surface that is parallel to the line of sight will appear on edge and be represented as line

Contiguous Planes

No Two contiguous areas can lie in the same plane

Auxiliary View

Auxiliary views are created by positioning a new line of sight relative to the object. An auxiliary view is an orthographic view that is projected onto any plane other than one of the six principal views.

The Reference Plane method

is a technique that locates a plane relative to the object, instead of suspending the object in the glass box.

fold lines

Phantom lines between the views

Transfer measurements

are always taken perpendicular to the reference or the fold line

Reference planes

always appear on edge in the views adjacent to the central view but never in two adjacent views

Primary Auxiliary View

is a single view projected from one of the six principal views

Secondary Auxiliary View

is a single view projected from a primary auxiliary views

Tertiary Auxiliary View

is a single view projected from a secondary or another tertiary auxiliary view.

Auxiliary Views

are also classified by the space dimension shown in the true size

The line of side (LOS)

determines the direction of the projection lines used in each auxiliary view

Reverse Construction

When auxiliary views is required before creating a pictorial view

Dihedral Angle

is the angle between two intersecting planes