Use and Care Manual

33
GMAW
www.lincolnelectric.com
Robotic Automation GMAW Welding System
Collision Sensor
GMAW Torches for Hard Automation
Hard automation requires the torches meet the demands of high
productivity. The choice of water-cooled torches versus an
air-cooled torch depends on the same criteria applied to the
selection of a torch for semiautomatic welding. Most hard
automation systems incorporate a system design that provides
the need for a torch no longer than 3 ft. (1 m). This aids in
feeding, and reduces maintenance time and cost.
Data should be collected regarding appropriate maintenance
levels for guns. Maintaining the performance on an arc welding
system requires changing the GMAW consumable parts. Torch
liners, torch barrels, diffusers, nozzles, and contact tips, require
replacement and they are essential to maintaining weld quality.
The information collected can provide a schedule for preventive
maintenance.
GMAW Torches for Robotic Automation
The criteria for selecting GMAW torches employed for robotic
applications follow the same pattern as used for both semi-
automatic and hard automation. The torch must be of a physical
size to move between tooling, holding clamps, and it must also
be flexible enough to access hard to reach locations. To meet
the demanding needs of robotic applications, a number of torch
configurations are available that incorporate long torch barrels,
small diameter nozzles, and torch exchange systems.
Whether or not to proceed with a water-cooled or air-cooled
torch depends, again, on the demands of productivity, and the
preventive maintenance program employed. A collision sensor
and a breakaway mounting to the end of the robot arm are
standard for all robotic applications. Each of these two
components are designed to limit damage to a system in the
event of a crash.
Fixed Length Automatic Torch for Hard Automation