8.A] With suitable sketches explain the different types of joints used in robots
Answer:-
Types of Robot Joints:
Rotational joint or R-joint:
This type of joint allows rotary relative motion where the axis of the rotation is perpendicular to the axes of the input link and the output link.
Linear Joint or L-joint:
This type of joint allows a translation sliding motion between the input and the output links with the axes of the links parallel.
Orthogonal Joint or O-joint:
This type of joint allows translation sliding between the input link and the output link with the axis of the output link is perpendicular to the input link.
Twisting Joint or T-joint:
This type of joint allows a translation rotary motion where the axis of the rotation is parallel to the axes of the input and output links.
Revolving Joint or V-Joint:
In this type of joint, the input link axis is parallel to the rotational axis of the joint whereas the output link axis is perpendicular to the rotational axis of the joint.