This master thesis covers the practical application of the simulation software Siemens Tecnomatix Process Simulate. First, the procedures through which we built a virtual model of the production line of the company TPV are described, where the manipulation and welding of the arm for the car chassis takes place. The functions of the program in practical use are presented, as well as the problems and solutions we faced. The final product is a functional simulation, which is a digital twin of the existing physical system. It includes an insert table, a manipulation robot, two positioners and two welding robots. For all robots, the programs were initially written by hand. We then tested the transfer of programs from a real robot to a simulation and vice versa and described the steps that we need to pay attention to when importing and exporting programs. To test the control with a real controller, we wanted to connect the Kuka Office Lite program with the Process Simulate program, but in the end it didn't work. We created six programs to rotate each of the individual axes from one limit to another, in order to determine the accelerations of a real robot. We then tested the observed accelerations on programs for different movements and compared the times of the real and simulated robot.
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