maybe some features were added, or left and right parts exist so that a hole is required. This can be achieved in the welding cell using a PFO. This process is called remote vapor pressure melt cutting. Openings created by this process are not designed to be machined later because of the large heat-affected zone. There is not a high tolerance, but it allows for a simple hole/opening to be created within the weld cell for such things as a clearance hole to pass wire through or connection point — Fig. 10. Conclusion Programmable focusing optic scanners show the flexibility and reduced cycle time that can be achieved with a nontraditional motion system. In some cases, neither the part nor the scanner is moved, and with larger parts, a scanner can be mounted to a robot to extend the working envelope. In some cases, production rates six times faster than resistance spot welding can be achieved while reducing floor space requirements. Since smaller flanges are required and customized weld geometries can be achieved, less material and/or thinner gauge material can be used to save weight, cost, and increase strength to improve car safety.♦ WELDING JOURNAL 53 Fig. 10 — Remote cutting. For info go to www.aws.org/ad-index
Welding Journal | January 2013
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