Robotic arm

Robotic arm is a type of mechanical arm, usually programmable, with similar functions to a human arm; the arm may be the sum total of the mechanism or may be part of a more complex robot. The links of such a manipulator are connected by joints allowing either rotational motion or translational displacement.

The links of the manipulator can be considered to form a kinematic chain (kinematic chain of the manipulator is called the end effector and it is analogous to the human hand).

To this day there are 8 types of robotic arm:

  • Cartesian robot / Gantry robot: Used for pick and place work, application of sealant, assembly operations, handling machine tools and arc welding.
  • collaborative robot / Cobot: Cobot applications contrast with traditional industrial robot applications in which robots are isolated from human contact.
  • Cylindrical robot: Used for assembly operations, handling at machine tools, spot welding, and handling at die casting machines. It is a robot whose axes form a cylindrical coordinate system.
  • Spherical robot / Polar robot: Used for handling machine tools, spot welding, die casting, fettling machines, gas welding and arc welding. It is a robot whose axes form a polar coordinate system.
  • SCARA robot: Used for pick and place work, application of sealant, assembly operations and handling machine tools. This robot features two parallel rotary joints to provide compliance in a plane.
  • Articulated robot: Used for assembly operations, diecasting, fettling machines, gas welding, arc welding and spray painting. It is a robot whose arm has at least three rotary joints.
  • Parallel robot: One use is a mobile platform handling cockpit flight simulators. It is a robot whose arms have concurrent prismatic or rotary joints.
  • Anthropomorphic robot: It is shaped in a way that resembles a human hand, i.e. with independent fingers and thumbs.

In space, the Canadarm and its successor Canadarm2 are examples of multi degree of freedom robotic arms. These robotic arms have been used to perform a variety of tasks such as inspection of the Space Shuttle using a specially deployed boom with cameras and sensors attached at the end effector, and also satellite deployment and retrieval manoeuvres from the cargo bay of the Space Shuttle.

The Curiosity rover on the planet Mars also uses a robotic arm.

The end effector, or robotic hand, can be designed to perform any desired task such as welding, gripping, spinning etc., depending on the application.

For example, robot arms in automotive assembly lines perform a variety of tasks such as welding and parts rotation and placement during assembly. In some circumstances, close emulation of the human hand is desired, as in robots designed to conduct bomb disarmament and disposal.

Pridaj komentár

Zadajte svoje údaje, alebo kliknite na ikonu pre prihlásenie:

WordPress.com Logo

Na komentovanie používate váš WordPress.com účet. Odhlásiť sa /  Zmeniť )

Google photo

Na komentovanie používate váš Google účet. Odhlásiť sa /  Zmeniť )

Twitter picture

Na komentovanie používate váš Twitter účet. Odhlásiť sa /  Zmeniť )

Facebook photo

Na komentovanie používate váš Facebook účet. Odhlásiť sa /  Zmeniť )

Connecting to %s

%d blogerom sa páči toto: