Abstract: A robotic system for carrying out an operation is provided. The robotic system is lightweight. The principle application of the robotic system is in manufacturing industry typically to hold a tool that can perform various operations. The robotic system includes a first carriage, an arm, an arm swiveling mechanism, a second carriage, a first displacement mechanism, and a controller. The first carriage is configured to be linearly displaced. The arm is coupled to the first carriage. The second carriage is connected to a free end of the arm, and is configured to securely hold the tool. The first displacement mechanism is configured to displace the second carriage.

Abstract: The present disclosure envisages a robotic system (200) for carrying out an operation. The robotic system (200) is lightweight. The principle application of the robotic system (200) is in manufacturing industry typically to hold a tool (209) that can perform various operations. The robotic system (200) comprises a first carriage (206), an arm (202), an arm swiveling mechanism (210), a second carriage (208), a first displacement mechanism (203), and a controller. The first carriage (206) is configured to be linearly displaced. The arm (202) is coupled to the first carriage (206). The second carriage (208) is connected to a free end of the arm (202), and is configured to securely hold the tool (209). The first displacement mechanism (203) is configured to displace the second carriage (208).

Abstract: A system and method for machining a work-piece in restrictive access operating position is disclosed. The system includes a robot arm adapted to access the bottom face of the work-piece; a computation means adapted to compute a central line on the bottom face while ascertaining an area of overlap that is accessible from all sides of the work-piece; and a robot controller adapted to sequentially maneuver the robot arm from one side of the work-piece to other side of the work-piece on the bottom face. Other embodiments are also disclosed.

Abstract: A system and method for machining a work-piece in restrictive access operating position is disclosed. The system includes a robot arm adapted to access the bottom face of the work-piece; a computation means adapted to compute a central line on the bottom face while ascertaining an area of overlap that is accessible from all sides of the work-piece; and a robot controller adapted to sequentially maneuver the robot arm from one side of the work-piece to other side of the work-piece on the bottom face. Other embodiments are also disclosed.

Abstract: A method of centering an electrode in the nozzle of a plasma arc torch head is disclosed. The method involves complementing the external wall of the swirl to the internal taper of the nozzle; complementing the internal wall of the swirl to the external taper of the electrode; fitting the hollow tapered swirl so formed in the hollow nozzle to abut the inner taper of the nozzle; and fitting the electrode in the hollow swirl to abut the inner taper of the swirl to center the electrode within the nozzle. Also disclosed is a head for a plasma arc cutting torch which includes a a swirl located between the nozzle and the electrode, through which plasma fuel gas is introduced into the nozzle, characterized in that the plasma fuel gas is introduced directly into the plasma formation zone or plenum beyond the junction between the nozzle body and cone end thereby avoiding change in direction within the conical end of the nozzle before the plasma formation zone.