G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 1/00 (2006.01) B23K 9/10 (2006.01) B23K 9/32 (2006.01) B25J 9/16 (2006.01) G05B 11/01 (2006.01)
Patent
CA 2165624
A method for preventing collisions between robots by causing a first robot to stop or pause so that a second robot may safely pass by or perform a specified operation. Once the second robot has completed its operation then the first robot is allowed to resume operation. Each robot automatically stops when it reaches a certain point in its job. The robots communicate with a central controller which allows the robots to resume operation when the central controller has determined that all of the robots have reached their respective correct positions. This prevents collisions between robots which are operating in the same area, especially those robots operating on the same workpiece. This method works with existing robot welders, does not require modifications to the robots, and does not require expensive spatial analysis computer programs, which may not even be available for the type of processor used in a particular robot. The present invention also provides a method for specifying a compartment entry point for a welding operation based upon data provided from a CAD program. The present invention also provides a method for automatically determining the starting and ending coordinates of a weld using a touch-sensing capability of the robot. The present invention also provides a method for automatically tracking the joint for a welding seam by periodically measuring the coordinates of the components by using the touchsensing feature of the robot. The present invention also provides a method for automatically determining the position of a torch to provide for an optimum angle of attack for a welding operation based upon data, such as beam height and flange overhang, provided from a CAD program. The present invention also provides a method for automatically tracking the joint for a welding seam by weaving (dithering) the torch along the desired path, measuring the arc welding current at peak deviations from the travel path, and comparing the measured current on the two different sides of the weld to determine whether the torch is on the seam. The present invention also uses this method to automatically track the edge of a component for applying a welding bead to the edge of the component. The present invention also provides for automatically selecting a welding program from a standard set of welding programs based upon data from a CAD program.
Gilliland Kenneth Allan
Gilliland Malcolm T.
Finlayson & Singlehurst
Gilliland Kenneth Allan
Gilliland Malcolm T.
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