Page 310 - CITS - Welder - Trade Practical

WELDER - CITS

Job Sequence

• The first step is to provide an accurate joint mapping method with enough resolution for your application.
• With the joint mapping process, before welding the robot searches and maps out the joint, determining
accurate positioning of the weld joint and volume information so that the welding parameters can be adjusted
accordingly.
• Specialized algorithms are also created that use the joint measurements to determine if the weld passes and
layer sequence have to change with the changing groove dimensions.

• Algorithms are also created that prevent cold lap between layers.
• Also, all collected joint mapping data can be used for quality control purposes if required.
• Joint analysis is the next step.
• As mentioned previously, one of the problems with welding these joints with traditional robotic methods is that
when the joint is searched properly and the location can be found repeatedly, the search simply provides an
offset so the robot welds in the right location.

• If the joint fit-up is in a condition that should not be welded, the robot will weld it regardless.
• Joint analysis provides a means of checking and verifying against a set of acceptable tolerances. With joint
analysis, the robot analyzes the joint and then makes a decision whether to weld or stop, depending on the
configuration.
Note: Wear protective clothing.

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CITS : CG & M - Welder - Exercise 82