CLASSIFICATIONS OF MECHANISMS 

Rotary transmission

Transmision of motion
* Linear transmission⇒ puley
* Rotary transmision⇒ gears

Linear transmission

Transformation of motion

* Rotary-linear⇒ rack and pinion

* Reciprocating rotary-linear⇒ crankshaft

Rotary-linear

Reciprocating rotary-linear

                                           

                     

Motion control

* Direction control⇒ ratchet

* Speed reduction⇒ brake

Speed reduction

Direction control

Energy accumulation
* Absorption/Dissipation⇒ spring

Connection
*Linkage⇒ clutch
*Support⇒plain bearning

Linkage (clutch)

Support (plain bearning)

CONSERVATION OF ENERGY AND WORK IN MECHANISMS
Mechanisms can´t create energy on their own. All mechanisms produce the same amount of work that is done to them, including energy that is lost to friction and heat.
If a mechanism increases force, it must decrease motion, in this way, energy and motion are conversed.

 MECHANISMS

WHAT IS A MECHANISM?

A mechanism is a device designed to transform input forces and movement into an output force and motion.

Mechanisms transmit and transform force and motion from an input source, to an output receptor.In the case of a bicycle the input source is our legs.

                               

                               

THE PARTS OF A MECHANISM

                      Input of force and motion
                                      ⇩
                               Mechanism
                                      ⇩
                      Output force and motion

BLOGS
Blogs are a special type of web page. Many blogs are opinion generator about a variety of topics. Other blogs are used as 'online diaries' for people.

Bloggers publish entries in chronological order, with newer posts appearing at the top of the list. People can write a comment with their opinion as well.

Tumblr, Wordpress and Blogger are some of
the most popular weblogs.

WIKIS

A wiki is a collection of web pages that visitors can edit, modify or expand.

 Adding new content to a wiki page is easy:

Other example of wiki

1.-Click in the Edit button.

2.-Write a new contribution.

3.-Click in the Save button.

An example of wiki

WIKIPEDIA

Wikipedia is a universal encyclopedia with no restrictions on use, modification or redistribution. Anyone can contribute their knowledge to this project.