What are Kinematic links and it types???

Rigid body in a machine which moves relative to another rigid body is called kinematic link. Rigid bodies are those that doesn't under go deformation.

Types of Links

Links are classified according to it capacity of getting connected to other links. Links that can be connected with another one link is called as Uni-link. Links that can be connected with two more links are called as binary link, with three more it is called as ternary link, with four more called as quandary link...as it goes on.

A quandary link 

A binary link

 

A ternary link

How are links connected???

Links are connected in many ways the most used and efficient way to connect two links are using a pivot and pivot closure.

A pivot(dark brown) and its closure(light brown)

What is a Mechanism???

Mechanisms are nothing but arrangement of links(rigid bodies) which are connected by joints (collectively called as linkages) in an orderly manner so that a particular required function is done.(to know about links:http://daytodaymechas.blogspot.com/2013/06/what-are-kinematic-links-and-it-types.html)


Let us try to understand what is mechanism using few examples

1.A 2 bar open loop mechanism

A 2 bar open loop mechanism - Mainly used for robotics arms. (Created using SolidWorks)

 This is called as  2 bar open loop mechanism. It is called so because it has two links and a connected by a joint(which satisfies basic definition of a mechanism). Only one link is grounded so this a open loop mechanism. This can be used as an robotic arm that can write or pick up things by connecting servo motors(or any actuators) in each joints.

2.Closed Loop 4 bar mechanism

A closed loop 4 bar mechanism - Rotational input is given to the input link(Created using SolidWorks)

The output link rotates because of the input motion(Created using SolidWorks)

The above diagram represents a closed loop four bar mechanism. This is called as closed loop mechanism because all the links are so connected to for a closed chain. Here the left most link acts as input links and the right most link acts as output. 4 bar mechanisms are used in many places like car suspension, waste dumper truck etc. Modification of 4 bar mechanism is also used in many applications.

4 bar mechanism is car suspension system

What is this blog all about???

day-2-day Mechas...!!! Anyone who has seen the movie "Artificial Intelligence" would say Mechas are the humanoids with human-emotions(much more stronger) made to substitute the HUMANS.

A Still from the movie A.I- The Mecha explored by an Alien

But the Mecha In "day-2-day Mechas" refer to the mechanisms and machines around us that we see in our day to day life. And in this blog you can find out updates about interesting mechanism and machines.