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PLTW: IED SEM1 2015 FINAL REVIEW
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Terms in this set (51)
The first step in creating a model using the CAD program is to:
Sketch
In inventor, when you start a new sketch, which axes represent the sketch coordinate system?
X and Y
Creating sketch geometry is as easy as drawing a closed shape. What are some simple rules for successful sketching?
Keep the sketch simple,
Draw roughly to size and shape,
Accept default dimension
Lines, circles, arcs and rectangles are all examples of:
Two dimensional sketching tools
Elements of sketch can be adjusted by:
Changing dimensions,
Applying constraints,
Grip editing (selecting and dragging)
The process of using lines, circles, arcs and rectangles to create the basic design element that defines the approximate size and shape for features in a part:
Sketching
These are the rules that remove the degrees of freedom between two selected components, positioning them relative to one another:
Assembly constraint
Generating a large quantity of idea for a solution to a problem is called:
Brainstorming
Engineers create _________________ to quickly record, communicate and investigate ideas.
Sketches
The most common view used in three-view, multi-view drawings are ________________.
Front, top, right side
What term best describes the list of items below?
- Must be made out of 4 to 6 pieces
- Must be interlocking
- Part cannon extend more than three units in any direction
- No two parts can be the same
Constraints
A full-scale working model used to test a design concept is called a(n):
Prototype
An improvement to an existing technological product, system or method is referred to as a(n):
Innovation
A(n) _________________ is the most common method of communicating the shape and size of an object that is intended for manufacture.
Multi-view projection
The basic dimension on a multi-view detail drawing that indicates indicates the distance from front to back:
Depth
Generally, which is the first view places or created in a multi-view drawing or sketch>
Front
Never dimension a(n)...
Object line
The first part brought into an assembly is known as the base component. The base component should always be ____________.
Grounded
A(n) ____________ is a person who is trained in and uses technological and scientific knowledge to solve practical problems.
Engineer
The organization that sets standards for drawing symbols, line conventions and dimensioning practices is known as:
ANSI (American National Standards Institute)
If a designer/engineer needs to calculate how many quarts of paint are needed to double coat 500 of one particular part in an assembly, what physical property would they need to know?
Area
37.28 in^3 is the answer to a physical property calculation. What physical property calculation does it represent?
Volume
How many degrees of freedom (DOF) remain on an ungrounded part after a single mate constraint has been applied?
3
What type of document includes the following section headings?
- Client
- Problem statement
- Design statement
- Constraints
- Deliverables
Design brief
d2*.5 is considered what type of constraint?
Numeric
The Coordinate System that uses a distance and an angle to plot points is called:
Polar
Design Process
1- Define a problem
2- Generate Concepts
3- Develop a solution
4- Construct and test a prototype
5- Evaluate solution
6- Present solution
The amount of space occupied by a substance or object or enclosed within a container:
Volume
The distance from the center point to the edge of a curved surface or circle.
Radius
The number of square units required to cover a surface.
Area
Constant, non-commercial relationships between the parts of a geometric figure. Examples include parallelism, perpendicularity and concentricity.
Numeric constraint
A type of 3D CAD Modeling that represents the volume of an object, not just its lines and surfaces. This allows for analysis of the object's mass properties.
Solid modeling
The straight distance from one outside curved surface through the center point in the opposite outside curved surface.
Diameter
Drawings that convey all of the information needed to manufacture and assemble a design.
Working drawings
A form of pictorial sketch in which two axes are right angles to each other (one vertical, one horizontal) and the depth axis is at an oblique angle.
Oblique
The point on the horizon where parallel objects appear to intersect due to convergence.
Vanishing point
A drawing projected so that the plane of projection of a three-dimensional drawing is at an equal angle to each of the three axes of the object.
Isometric
An area of relatively dark tone or close lines, dots or hatching producing darkness/shadow in a drawing or picture.
Tonal shading
A perspective drawing using one vanishing point.
One point perspective
In a perspective drawing, the imaginary line at eye level used as a construction line.
Horizon line
An imaginary plane in the line of sight on which an image appears.
Projection plane
A view of an object created with one or more vanishing points to the horizon.
Perspective
The point where the viewer stands to observe the image on the picture plane.
Station point
The axis representing height, width and the depth for an isometric drawing.
Isometric axis
Drawing using vertical lines and two vanishing points.
Two point perspective
In a perspective drawing, the effect when parallel lines appear to come together in the distance.
Converge
ANSI
American National Standards Institute
ISO
International Organization For Standardization
Engineer that develops new fuels.
Chemical
Engineer responsible for design of electrical circuitry.
Electrical
A(n) ___________ is a new product, system or process that has never existed before, created by study and experimentation.
Invention
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