15-06-2012, 03:25 PM
INDUSTRIAL ROBOTICS
INDUSTRIAL_ROBOTICS[1] a.pptx (Size: 1.08 MB / Downloads: 35)
INDUSTRIAL ROBOTS
An industrial robot is a reprogrammable, multifunctional manipulator designed to move materials, parts, tools, or special devices through variable programmed motions for the performance of a variety of tasks
Reason for use of robots
Hazardous work environments
Repetitive work cycle
Consistency and accuracy
Difficult handling task for humans
Multishift operations
Reprogrammable, flexible
Interfaced to other computer systems
MANIPULATOR
Manipulator consists of joints and links
Joints provide relative motion
Links are rigid members between joints
Various joint types: linear and rotary
Each joint provides a “degree-of-freedom”
Most robots possess five or six degrees-of-freedom
Manipulator Joints
Translational motion
Linear joint (type L)
Orthogonal joint (type O)
Rotary motion
Rotational joint (type R)
Twisting joint (type T)
Revolving joint (type V)
TYPES OF ROBOTS
Cartesian Robot
SCARA Robot
Polar Robot
Cylindrical Body-and-Arm Assembly
Polar Coordinate Body-and-Arm Assembly
Notation TRL:
Consists of a sliding arm (L joint) actuated relative to the body, which can rotate about both a vertical axis (T joint) and horizontal axis (R joint)
Cartesian Coordinate Body-and-Arm Assembly
Notation LOO:
Consists of three sliding joints, two of which are orthogonal
Other names include rectilinear robot and x-y-z robot
POWER SOURCES
THE POWER SOURCES USED IN ROBOTS ARE:
ELECTRIC
PNEUMATIC
HYDRAULIC
Industrial Robot Applications
Material handling applications
Material transfer – pick-and-place, palletizing
Machine loading and/or unloading
Processing operations
Welding
Spray coating
Cutting and grinding
Assembly and inspection