Get a Ruler and a Triangle, then complete the DRILL using the word bank below. 1.Write and complete...
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Transcript of Get a Ruler and a Triangle, then complete the DRILL using the word bank below. 1.Write and complete...
Get a Ruler and a Triangle, then complete the DRILL using the word bank below.
1. Write and complete the following as equations:
A. The product of a force (F) applied to an object and the distance (d) the object moves equals ________.
B. The ratio of Output Work (Wo) from a system to Input Work (Wi) equals _______.
December 2, 2009
DRILL
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Mechanical Technology
Work (W) Efficiency (Eff)A B
F x d = W
Wo / Wi = Eff
UNIT 3 – Engineering Design
Engineering, the systematic application of mathematical, scientific, and technical principles, produces tangible end products that meet our needs and desires.
What is a systematic application of something?
– an organized or established procedure;
– a set of steps
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UNIT 3 – Engineering Design
a. Getting familiar with the Big Idea
b. The Design Process
c. Core Technologies
d. Mechanical Technologye. Electrical Technology
f. Reverse Technology
g. Fluid Technology
h. Thermal Technology
i. Optical Technology
j. Materials Technology
Mechanical Technology
PURPOSE OF SUB-UNIT
• To familiarize students with the functioning and applications of mechanical technology systems by having you analyze the functioning of mechanical systems in terms of their:
– common components, – basic system design, – safety considerations, and – simple controls.
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Mechanical Technology
What is technology?
The application of knowledge, tools, and skills to solve problems and extend human capabilities.
What is a technology system?
A Technology System is a group of subsystems working together to solve problems and extend human capabilities.
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• There are several engineering resources (core technologies) that are the “building blocks” of all technology systems.
• We could store the core technologies on shelves • We can go to those shelves and use technologies
according to our needs in problem solving.
Mechanical Technology
Core Technologies
Mechanical
Structural Electrical
Electronic Thermal
Fluid Optical
Bio-Tech Material
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• The technology of putting together mechanical parts to produce, control, and transmit motion.
Example applications: •Gear systems in a car transmission, •Brakes on a bicycle, •Agitator in a washing machine, •Latch on a door.•Springs in vehicle shocks
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• Machines are artifacts that transmit or change the application of power, force, or motion.
• What is an artifact?– something created by humans usually for a practical purpose.
• Machines can be simple or complex– Complex machines are comprised of….
• Inputs go in• Outputs come out
Simple Machines
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• On a clean sheet of notebook paper, use a pencil to draw 6 2” x 2” squares equally spaced. Number them.
SIMPLE MACHINES
1. 2.
3. 4.
5. 6.
VERY LIGHT Constructio
n Line
2”
2”
2”
1”
1”
2” 2”1.5”
• CONSTRAINT: You can use only the following system components:– Levers
– Pivot Points
– Linkage Joints
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• GOAL: Transmit the given input motion to the desired output motion.
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1.COMPONENTS:– Levers
– Pivot Points
– Linkage Joints
INPUTCOPY THIS INTO #1
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• INSTRUCTIONS: Transmit the given input motion to the desired output motion using only the allowed components.
input input input
input input
2. 3. 4.
5. 6.
• Correctly copy the following onto the remaining 2” x 2” boxes in your notebook.