Wheel and Lug Nut Torquing
Vision systems locate nuts for automated robotic nut runner
A Cognex 2D vision system recognizes the type of wheel and locates the axle’s center using geometric pattern matching tools. The vision system also inspects the wheel’s rim to determine its angle of rotation and measures the difference between two laser cross hairs to calculate the angle the wheel is turned and tilted. The vision system data is sent to the robot controller and the robot swivels its wrist to match how the wheel is tilted and turned, and rotates to match the nut runner’s angle of rotation. The robot then guides the nut runner onto the lug nuts and the nut runner provides the necessary torque. Automating this application offers significant process efficiencies and eliminates safety concerns associated with repeatedly manipulating heavy nut runners.