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Mechanism “ a piece of machinery Actuators “a machine that is responsible for

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Слайд 1Mechanism
“a piece of machinery
Actuators
“a machine that is responsible for moving

and controlling a mechanism

Mechanism“a piece of machineryActuators“a machine that is responsible for moving and controlling a mechanism

Слайд 2Learn More
Не знаю что тут печатать.
Короче
Скачайче
Free design

Learn MoreНе знаю что тут печатать.КорочеСкачайчеFree design

Слайд 3Actuators
“Cheapest, easiest
“Most effective
“With position rotating
“Precise

Actuators“Cheapest, easiest“Most effective“With position rotating“Precise

Слайд 4Actuators
“Most powerfull
“For soft robot
“New future
“Another solution

Actuators“Most powerfull“For soft robot“New future“Another solution

Слайд 5Includes
1) Gears and gear trains
2) Belt and chain drives
3) Cam

and followers
4) Linkage
5) Friction devices, such as brakes and clutches
6)

Structural components such as a frame, fasteners, bearings, springs, lubricants
7) Various machine elements, such as splines, pins, and keys.

60%

A mechanism is usually a piece of a larger process or mechanical system.

Multiple mechanisms are machines.

Mechanism

In engineering, a mechanism is a device that transforms input forces and movement into a desired set of output forces and movement.

Includes1) Gears and gear trains2) Belt and chain drives3) Cam and followers4) Linkage5) Friction devices, such as

Слайд 6Planetary gears
https://www.youtube.com/watch?v=b6cDOyxub8w
An epicyclic gear train (also known as planetary gear)

consists of two gears mounted so that the centre of

one gear revolves around the centre of the other.

A carrier connects the centres of the two gears and rotates to carry one gear, called the planet gear or planet pinion, around the other, called the sun gear or sun wheel.

The planet and sun gears mesh so that their pitch circles roll without slip.
Planetary gearshttps://www.youtube.com/watch?v=b6cDOyxub8wAn epicyclic gear train (also known as planetary gear) consists of two gears mounted so that

Слайд 7Crossed helical gears
gears offer a refinement over spur gears. The

leading edges of the teeth are not parallel to the

axis of rotation, but are set at an angle.

Since the gear is curved, this angling makes the tooth shape a segment of a helix.

Helical or "dry fixed"

Crossed helical gearsgears offer a refinement over spur gears. The leading edges of the teeth are not

Слайд 8Rectangle gears
https://www.youtube.com/watch?v=WQ9ptuUxfk4
Another interesting mechanism with no real application, this trio

of interlocking pieces is a rectangular version of a mathematical

phenomenon called"Borromean rings."

It's also a sequence of three identical gears that can move when they're all connected, which isn't usually the case.

A fun little curiosity, but they don't serve a purpose other than just being fun to fiddle with.
Rectangle gearshttps://www.youtube.com/watch?v=WQ9ptuUxfk4Another interesting mechanism with no real application, this trio of interlocking pieces is a rectangular version

Слайд 9Universal joint
Learn More
A universal joint (universal coupling, U-joint, Cardan joint,

Spicer or Hardy Spicer joint, or Hooke's joint) is a

joint or coupling connecting rigid rods whose axes are inclined to each other, and is commonly used in shafts that transmit rotary motion.

“Constant-velocity joints (also known as homokinetic or CV joints) allow a drive shaft to transmit power through a variable angle, at constant rotational speed, without an appreciable increase in friction or play. They are mainly used in front wheel drive vehicles.

Universal jointLearn MoreA universal joint (universal coupling, U-joint, Cardan joint, Spicer or Hardy Spicer joint, or Hooke's

Слайд 10Reuleaux triangle mechanism
Learn More
Any curve of constant width can form

a rotor within a square, a shape that can perform

a complete rotation while staying within the square and at all times touching all four sides of the square.
Reuleaux triangle mechanismLearn MoreAny curve of constant width can form a rotor within a square, a shape

Слайд 11Iris Mechanism
Learn More
The design is generic in that it is

adaptable to a wide range of aperture sizes and can

be implemented in a variety of materials to suit the thermal, optical, and mechanical requirements of various applications.
Iris MechanismLearn MoreThe design is generic in that it is adaptable to a wide range of aperture

Слайд 12The Geneva drive or Maltese cross is a gear mechanism

that translates a continuous rotation movement into intermittent rotary motion.

The

rotating drive wheel is usually equipped with a pin that reaches into a slot located in the other wheel (driven wheel) that advances it by one step at a time.

The main wheel also has an elevated circular blocking disc that "locks" the rotating driven wheel in position between steps.

Geneva mechanism

The Geneva drive or Maltese cross is a gear mechanism that translates a continuous rotation movement into

Слайд 13Meanwhile, the oval-shaped inside out-ish gear makes the pair something

called a "rack and pinion."

This pairing comes in all kinds

of different forms but generally includes one circular gear and one long, straight, toothed beam.

The result is that the continual circular motion of the traditional gear can be turned into linear movement.

https://www.youtube.com/watch?v=zae2ZePQTwQ

A circular gear inside an oval gear

Meanwhile, the oval-shaped inside out-ish gear makes the pair something called a

Слайд 14It's another mostly pointless exercise, but these gears do exhibit

an interesting quality: If one gear is moving at a

constant speed, the other will speed up and slow down during the course of its rotation.

Instead of being totally round, these gears take their cue from the Fibonacci spiral.

The result is that at the very end of a rotation, the two big flat sides hit against each other before the next turn starts.

https://www.youtube.com/watch?v=bbp0SYEpjrg

Nautilus gears

It's another mostly pointless exercise, but these gears do exhibit an interesting quality: If one gear is

Слайд 15Another invention of Oskar van Deventer, these strange worm-like gears

have a hidden superpower.

When oriented one way, the outside

two spin in the same direction while the middle one spins in the opposite direction, like a normal trio of gears.

But when you flip them around just right, all three can interlock and spin in the same direction.

https://www.youtube.com/watch?v=qGAnmRb66s0

"Magic" worm gears

Another invention of Oskar van Deventer, these strange worm-like gears have a hidden superpower. When oriented one

Слайд 16Yet another art piece, this system of gears includes three

inseparable and interconnected donut-shaped guys, all powered by a single

corkscrew spindle that juts up through the center of the whole thing.

Not a lot of practical application here, but it's a fun little desk ornament.

https://www.youtube.com/watch?v=QhXjevOY_uk

Donut gears

Yet another art piece, this system of gears includes three inseparable and interconnected donut-shaped guys, all powered

Слайд 17Tank you,
See You Next Time
FOR YOUR ATTENTION

Tank you,See You Next TimeFOR YOUR ATTENTION

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