Kinematic Constraints and Kinematic Pairs:

In the previous unit, you have studied regarding link, machine, mechanism, kinematic quantities, different types of motion and planar mechanism. You will learn regarding degree of freedom, kinematic pairs & classification of links in this unit.

A moving body ought to be assigned coordinates according to the axes assigned. The motion of the bodies is constrained according to the requirement in a mechanism. The links which are the basic elements of the mechanism are connected to form kinematic pairs which are of different types. The links may again be connected to several links in order to impart motion and they are classified accordingly.

Objectives

After learning this unit, you should be able to

• find out degrees of freedom for a link and kinematic pair,
• explained kinematic pair and determine motion, and
• Distinguish and categorise several type of links.