IB Design Technology Topic A3.3.4 Changing Motion in Mechanical Systems Revision Notes (HL)

IB Design Technology Topic A3.3.4 Changing Motion in Mechanical Systems Revision Notes (HL) | RevisionDojo

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Changing Motion: Speed, Direction or Power

A mechanical system exists to manipulate motion, and there are only three things it can change:
1. Speed: how fast the output moves.
2. Direction: the path the output follows, including turning one type of motion into another.
3. Power: the force delivered to move the load.
This lesson identifies the five families of mechanism that do this, and each one is then explained in full in its own lesson.

The Five Ways to Change Motion

Learn to recognise these five on sight, because Paper 1 and Paper 2 both ask you to name the mechanism inside an unfamiliar product.
For each one, ask what motion goes in, what motion comes out, and which of speed, direction or power has changed.

Gear-Driven Systems

Interlocking toothed wheels that pass rotary motion from one shaft to another.
Changing the relative sizes trades speed against torque, and meshing two gears also reverses the direction of rotation.
You will find them in clocks, bicycles and car transmissions, and A3.3.6 covers the types in full.

Belt-Driven Systems

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Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Changing Motion: Speed, Direction or Power

A mechanical system exists to manipulate motion, and there are only three things it can change:
1. Speed: how fast the output moves.
2. Direction: the path the output follows, including turning one type of motion into another.
3. Power: the force delivered to move the load.
This lesson identifies the five families of mechanism that do this, and each one is then explained in full in its own lesson.

The Five Ways to Change Motion

Learn to recognise these five on sight, because Paper 1 and Paper 2 both ask you to name the mechanism inside an unfamiliar product.
For each one, ask what motion goes in, what motion comes out, and which of speed, direction or power has changed.

Gear-Driven Systems

Interlocking toothed wheels that pass rotary motion from one shaft to another.
Changing the relative sizes trades speed against torque, and meshing two gears also reverses the direction of rotation.
You will find them in clocks, bicycles and car transmissions, and A3.3.6 covers the types in full.

Belt-Driven Systems

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A. Design in theory8 subtopics

B. Design in practice8 subtopics

C. Design in context8 subtopics

IB Design Technology Topic A3.3.4: Changing Motion in Mechanical Systems Notes

A. Design in theory8 subtopics

B. Design in practice8 subtopics

C. Design in context8 subtopics

Changing Motion: Speed, Direction or Power

The Five Ways to Change Motion

Gear-Driven Systems

Belt-Driven Systems

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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Changing Motion: Speed, Direction or Power

The Five Ways to Change Motion

Gear-Driven Systems

Belt-Driven Systems

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account