In the diploma thesis, the functioning, planning and execution of the low-voltage switch cabinet, which provides power and controls the system for electrolyte supply of the machine for electrochemical machining of car injector nozzles, is presented.
One of the leading companies in the automotive industry is building a production plant for manufacturing car injector nozzles. In the production process some parts of car nozzles, because of their complicated shape, are manufactured by an unconventional method of electrochemical machining, which takes place on a special machine. The procedure of electrochemical machining can only be done under strictly set conditions. To meet these conditions, an electrolyte is supplied to the machine by a special system. The most important preconditions are uninterrupted production, proper communication of the system and the machine for electrochemical machining, safety of production processes and users, as well as rational space utilization. It is especially challenging to meet the standards and norms required by the client. Along with the aforementioned, the client wanted the system to have two different functioning regimes, depending on the intensity of production during a certain time segment (weekday and weekend regime). All of this can be provided by controlling the system via a low-voltage switch cabinet. In the diploma thesis the entire process of planning and implementation of low-voltage switch cabinet from ordering to the finished product, is presented.
As a starting point for implementation of the switch cabinet, the diploma thesis presents the functioning of the system for electrolyte supply and relevant standards and norms. The building blocks of the switch cabinet were chosen on the basis of a technological schematic, a ground plan of the production plant, client demands and calculations. Some main building blocks are listed and described. A detailed plan of implementation was designed with the ePLAN software, which is specialized for drawing electrical schematics. The final plan approved by the client was the basis for manufacturing the switch cabinet. The project was concluded by measurements and a successful execution of a test startup. The entire procedure is described in chapter four, which summarizes the themes of all chapters into a practical display of planning and implementation of the low-voltage switch cabinet.
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