Articulated Arm type

They are also known as a jointed-arm robot. The articulated robot arm has a trunk, shoulder, upper arm, forearm, and wrist. With the ability to rotate all the joints, a majority of these robots have six degrees of freedom.

Gantry Type Robot

A gantry robot consists of a manipulator mounted onto an overhead system that allows movement across a horizontal plane.

Gantry robots are also called Cartesian or linear robots. They are usually large systems that perform pick-and-place applications, but they can also be used in welding and other applications.